StreetInsider.com News Articles http://www.streetinsider.com Latest StreetInsider.com News Articles en-us Copyright 2026, StreetInsider.com rss@streetinsider.com (SI RSS) rss@streetinsider.com (SI RSS) Wed, 04 Feb 2026 18:15:00 -0500 http://blogs.law.harvard.edu/tech/rss http://www.streetinsider.com/images/rss_logo.gif StreetInsider.com News Articles http://www.streetinsider.com 143 28 0 1 2 3 21 22 23 Saturday Sunday Ciena Set to Join S&amp;P 500; Arrowhead Pharmaceuticals to Join S&amp;P MidCap 400; ADT and OneSpaWorld Holdings to Join S&amp;P SmallCap 600 http://www.streetinsider.com/Press+Releases/Ciena+Set+to+Join+S%26amp%3BP+500%3B+Arrowhead+Pharmaceuticals+to+Join+S%26amp%3BP+MidCap+400%3B+ADT+and+OneSpaWorld+Holdings+to+Join+S%26amp%3BP+SmallCap+600/25948554.html <div class="xn-content"> <p><span class="legendSpanClass"><location value="LU/us.ny.nyc" idsrc="xmltag.org" >NEW YORK</location></span>, <span class="legendSpanClass"><chron>Feb. 4, 2026</chron></span> /PRNewswire/ -- <span value="ACORN:1069625368" idsrc="xmltag.org" >S&amp;P Dow Jones Indices</span> will make the following changes to the S&amp;P 500, S&amp;P MidCap 400, S&amp;P SmallCap 600: </p> <ul type="disc"><li>S&amp;P MidCap 400 constituent <span value="NYSE:CIEN" idsrc="xmltag.org" >Ciena Corp.</span> (NYSE: CIEN) will replace <span value="NYSE:DAY" idsrc="xmltag.org" >Dayforce Inc.</span> (NYSE: DAY) in the S&amp;P 500, S&amp;P SmallCap 600 constituent <span value="NASDAQ-NMS:ARWR" idsrc="xmltag.org" >Arrowhead Pharmaceuticals Inc.</span> (<span>NASD</span>: ARWR) will replace Ciena in the S&amp;P MidCap 400, and <span value="NYSE:ADT" idsrc="xmltag.org" >ADT Inc.</span> (NYSE: ADT) will replace <span value="NASDAQ-NMS:ARWR" idsrc="xmltag.org" >Arrowhead Pharmaceuticals</span> in the S&amp;P SmallCap 600 effective prior http://www.streetinsider.com/Press+Releases/Ciena+Set+to+Join+S%26amp%3BP+500%3B+Arrowhead+Pharmaceuticals+to+Join+S%26amp%3BP+MidCap+400%3B+ADT+and+OneSpaWorld+Holdings+to+Join+S%26amp%3BP+SmallCap+600/25948554.html Wed, 04 Feb 2026 18:15:00 -0500 A.10696253 A.16214043 A.24194066 ADT ARWR CIEN DAY DVAX O.00173595 O.00641174 O.01522756 O.03712323 O.06070974 O.17262886 O.20250683 O.37300900 O.40949211 O.40956674 OSW SPGI Ciena Set to Join S&amp;P 500; Arrowhead Pharmaceuticals to Join S&amp;P MidCap 400; ADT and OneSpaWorld Holdings to Join S&amp;P SmallCap 600 http://www.streetinsider.com/Press+Releases/Ciena+Set+to+Join+S%26amp%3BP+500%3B+Arrowhead+Pharmaceuticals+to+Join+S%26amp%3BP+MidCap+400%3B+ADT+and+OneSpaWorld+Holdings+to+Join+S%26amp%3BP+SmallCap+600/25948554.html <div class="xn-content"> <p><span class="legendSpanClass"><location value="LU/us.ny.nyc" idsrc="xmltag.org" >NEW YORK</location></span>, <span class="legendSpanClass"><chron>Feb. 4, 2026</chron></span> /PRNewswire/ -- <span value="ACORN:1069625368" idsrc="xmltag.org" >S&amp;P Dow Jones Indices</span> will make the following changes to the S&amp;P 500, S&amp;P MidCap 400, S&amp;P SmallCap 600: </p> <ul type="disc"><li>S&amp;P MidCap 400 constituent <span value="NYSE:CIEN" idsrc="xmltag.org" >Ciena Corp.</span> (NYSE: CIEN) will replace <span value="NYSE:DAY" idsrc="xmltag.org" >Dayforce Inc.</span> (NYSE: DAY) in the S&amp;P 500, S&amp;P SmallCap 600 constituent <span value="NASDAQ-NMS:ARWR" idsrc="xmltag.org" >Arrowhead Pharmaceuticals Inc.</span> (<span>NASD</span>: ARWR) will replace Ciena in the S&amp;P MidCap 400, and <span value="NYSE:ADT" idsrc="xmltag.org" >ADT Inc.</span> (NYSE: ADT) will replace <span value="NASDAQ-NMS:ARWR" idsrc="xmltag.org" >Arrowhead Pharmaceuticals</span> in the S&amp;P SmallCap 600 effective prior http://www.streetinsider.com/Press+Releases/Ciena+Set+to+Join+S%26amp%3BP+500%3B+Arrowhead+Pharmaceuticals+to+Join+S%26amp%3BP+MidCap+400%3B+ADT+and+OneSpaWorld+Holdings+to+Join+S%26amp%3BP+SmallCap+600/25948554.html Wed, 04 Feb 2026 18:15:00 -0500 A.10696253 A.16214043 A.24194066 ADT ARWR CIEN DAY DVAX O.00173595 O.00641174 O.01522756 O.03712323 O.06070974 O.17262886 O.20250683 O.37300900 O.40949211 O.40956674 OSW SPGI Ciena Set to Join S&amp;P 500; Arrowhead Pharmaceuticals to Join S&amp;P MidCap 400; ADT and OneSpaWorld Holdings to Join S&amp;P SmallCap 600 http://www.streetinsider.com/Press+Releases/Ciena+Set+to+Join+S%26amp%3BP+500%3B+Arrowhead+Pharmaceuticals+to+Join+S%26amp%3BP+MidCap+400%3B+ADT+and+OneSpaWorld+Holdings+to+Join+S%26amp%3BP+SmallCap+600/25948554.html <div class="xn-content"> <p><span class="legendSpanClass"><location value="LU/us.ny.nyc" idsrc="xmltag.org" >NEW YORK</location></span>, <span class="legendSpanClass"><chron>Feb. 4, 2026</chron></span> /PRNewswire/ -- <span value="ACORN:1069625368" idsrc="xmltag.org" >S&amp;P Dow Jones Indices</span> will make the following changes to the S&amp;P 500, S&amp;P MidCap 400, S&amp;P SmallCap 600: </p> <ul type="disc"><li>S&amp;P MidCap 400 constituent <span value="NYSE:CIEN" idsrc="xmltag.org" >Ciena Corp.</span> (NYSE: CIEN) will replace <span value="NYSE:DAY" idsrc="xmltag.org" >Dayforce Inc.</span> (NYSE: DAY) in the S&amp;P 500, S&amp;P SmallCap 600 constituent <span value="NASDAQ-NMS:ARWR" idsrc="xmltag.org" >Arrowhead Pharmaceuticals Inc.</span> (<span>NASD</span>: ARWR) will replace Ciena in the S&amp;P MidCap 400, and <span value="NYSE:ADT" idsrc="xmltag.org" >ADT Inc.</span> (NYSE: ADT) will replace <span value="NASDAQ-NMS:ARWR" idsrc="xmltag.org" >Arrowhead Pharmaceuticals</span> in the S&amp;P SmallCap 600 effective prior http://www.streetinsider.com/Press+Releases/Ciena+Set+to+Join+S%26amp%3BP+500%3B+Arrowhead+Pharmaceuticals+to+Join+S%26amp%3BP+MidCap+400%3B+ADT+and+OneSpaWorld+Holdings+to+Join+S%26amp%3BP+SmallCap+600/25948554.html Wed, 04 Feb 2026 18:15:00 -0500 A.10696253 A.16214043 A.24194066 ADT ARWR CIEN DAY DVAX O.00173595 O.00641174 O.01522756 O.03712323 O.06070974 O.17262886 O.20250683 O.37300900 O.40949211 O.40956674 OSW SPGI Ciena Set to Join S&amp;P 500; Arrowhead Pharmaceuticals to Join S&amp;P MidCap 400; ADT and OneSpaWorld Holdings to Join S&amp;P SmallCap 600 http://www.streetinsider.com/Press+Releases/Ciena+Set+to+Join+S%26amp%3BP+500%3B+Arrowhead+Pharmaceuticals+to+Join+S%26amp%3BP+MidCap+400%3B+ADT+and+OneSpaWorld+Holdings+to+Join+S%26amp%3BP+SmallCap+600/25948554.html <div class="xn-content"> <p><span class="legendSpanClass"><location value="LU/us.ny.nyc" idsrc="xmltag.org" >NEW YORK</location></span>, <span class="legendSpanClass"><chron>Feb. 4, 2026</chron></span> /PRNewswire/ -- <span value="ACORN:1069625368" idsrc="xmltag.org" >S&amp;P Dow Jones Indices</span> will make the following changes to the S&amp;P 500, S&amp;P MidCap 400, S&amp;P SmallCap 600: </p> <ul type="disc"><li>S&amp;P MidCap 400 constituent <span value="NYSE:CIEN" idsrc="xmltag.org" >Ciena Corp.</span> (NYSE: CIEN) will replace <span value="NYSE:DAY" idsrc="xmltag.org" >Dayforce Inc.</span> (NYSE: DAY) in the S&amp;P 500, S&amp;P SmallCap 600 constituent <span value="NASDAQ-NMS:ARWR" idsrc="xmltag.org" >Arrowhead Pharmaceuticals Inc.</span> (<span>NASD</span>: ARWR) will replace Ciena in the S&amp;P MidCap 400, and <span value="NYSE:ADT" idsrc="xmltag.org" >ADT Inc.</span> (NYSE: ADT) will replace <span value="NASDAQ-NMS:ARWR" idsrc="xmltag.org" >Arrowhead Pharmaceuticals</span> in the S&amp;P SmallCap 600 effective prior http://www.streetinsider.com/Press+Releases/Ciena+Set+to+Join+S%26amp%3BP+500%3B+Arrowhead+Pharmaceuticals+to+Join+S%26amp%3BP+MidCap+400%3B+ADT+and+OneSpaWorld+Holdings+to+Join+S%26amp%3BP+SmallCap+600/25948554.html Wed, 04 Feb 2026 18:15:00 -0500 A.10696253 A.16214043 A.24194066 ADT ARWR CIEN DAY DVAX O.00173595 O.00641174 O.01522756 O.03712323 O.06070974 O.17262886 O.20250683 O.37300900 O.40949211 O.40956674 OSW SPGI Ciena Set to Join S&amp;P 500; Arrowhead Pharmaceuticals to Join S&amp;P MidCap 400; ADT and OneSpaWorld Holdings to Join S&amp;P SmallCap 600 http://www.streetinsider.com/Press+Releases/Ciena+Set+to+Join+S%26amp%3BP+500%3B+Arrowhead+Pharmaceuticals+to+Join+S%26amp%3BP+MidCap+400%3B+ADT+and+OneSpaWorld+Holdings+to+Join+S%26amp%3BP+SmallCap+600/25948554.html <div class="xn-content"> <p><span class="legendSpanClass"><location value="LU/us.ny.nyc" idsrc="xmltag.org" >NEW YORK</location></span>, <span class="legendSpanClass"><chron>Feb. 4, 2026</chron></span> /PRNewswire/ -- <span value="ACORN:1069625368" idsrc="xmltag.org" >S&amp;P Dow Jones Indices</span> will make the following changes to the S&amp;P 500, S&amp;P MidCap 400, S&amp;P SmallCap 600: </p> <ul type="disc"><li>S&amp;P MidCap 400 constituent <span value="NYSE:CIEN" idsrc="xmltag.org" >Ciena Corp.</span> (NYSE: CIEN) will replace <span value="NYSE:DAY" idsrc="xmltag.org" >Dayforce Inc.</span> (NYSE: DAY) in the S&amp;P 500, S&amp;P SmallCap 600 constituent <span value="NASDAQ-NMS:ARWR" idsrc="xmltag.org" >Arrowhead Pharmaceuticals Inc.</span> (<span>NASD</span>: ARWR) will replace Ciena in the S&amp;P MidCap 400, and <span value="NYSE:ADT" idsrc="xmltag.org" >ADT Inc.</span> (NYSE: ADT) will replace <span value="NASDAQ-NMS:ARWR" idsrc="xmltag.org" >Arrowhead Pharmaceuticals</span> in the S&amp;P SmallCap 600 effective prior http://www.streetinsider.com/Press+Releases/Ciena+Set+to+Join+S%26amp%3BP+500%3B+Arrowhead+Pharmaceuticals+to+Join+S%26amp%3BP+MidCap+400%3B+ADT+and+OneSpaWorld+Holdings+to+Join+S%26amp%3BP+SmallCap+600/25948554.html Wed, 04 Feb 2026 18:15:00 -0500 A.10696253 A.16214043 A.24194066 ADT ARWR CIEN DAY DVAX O.00173595 O.00641174 O.01522756 O.03712323 O.06070974 O.17262886 O.20250683 O.37300900 O.40949211 O.40956674 OSW SPGI Ciena Set to Join S&amp;P 500; Arrowhead Pharmaceuticals to Join S&amp;P MidCap 400; ADT and OneSpaWorld Holdings to Join S&amp;P SmallCap 600 http://www.streetinsider.com/Press+Releases/Ciena+Set+to+Join+S%26amp%3BP+500%3B+Arrowhead+Pharmaceuticals+to+Join+S%26amp%3BP+MidCap+400%3B+ADT+and+OneSpaWorld+Holdings+to+Join+S%26amp%3BP+SmallCap+600/25948554.html <div class="xn-content"> <p><span class="legendSpanClass"><location value="LU/us.ny.nyc" idsrc="xmltag.org" >NEW YORK</location></span>, <span class="legendSpanClass"><chron>Feb. 4, 2026</chron></span> /PRNewswire/ -- <span value="ACORN:1069625368" idsrc="xmltag.org" >S&amp;P Dow Jones Indices</span> will make the following changes to the S&amp;P 500, S&amp;P MidCap 400, S&amp;P SmallCap 600: </p> <ul type="disc"><li>S&amp;P MidCap 400 constituent <span value="NYSE:CIEN" idsrc="xmltag.org" >Ciena Corp.</span> (NYSE: CIEN) will replace <span value="NYSE:DAY" idsrc="xmltag.org" >Dayforce Inc.</span> (NYSE: DAY) in the S&amp;P 500, S&amp;P SmallCap 600 constituent <span value="NASDAQ-NMS:ARWR" idsrc="xmltag.org" >Arrowhead Pharmaceuticals Inc.</span> (<span>NASD</span>: ARWR) will replace Ciena in the S&amp;P MidCap 400, and <span value="NYSE:ADT" idsrc="xmltag.org" >ADT Inc.</span> (NYSE: ADT) will replace <span value="NASDAQ-NMS:ARWR" idsrc="xmltag.org" >Arrowhead Pharmaceuticals</span> in the S&amp;P SmallCap 600 effective prior http://www.streetinsider.com/Press+Releases/Ciena+Set+to+Join+S%26amp%3BP+500%3B+Arrowhead+Pharmaceuticals+to+Join+S%26amp%3BP+MidCap+400%3B+ADT+and+OneSpaWorld+Holdings+to+Join+S%26amp%3BP+SmallCap+600/25948554.html Wed, 04 Feb 2026 18:15:00 -0500 A.10696253 A.16214043 A.24194066 ADT ARWR CIEN DAY DVAX O.00173595 O.00641174 O.01522756 O.03712323 O.06070974 O.17262886 O.20250683 O.37300900 O.40949211 O.40956674 OSW SPGI Ciena Set to Join S&amp;P 500; Arrowhead Pharmaceuticals to Join S&amp;P MidCap 400; ADT and OneSpaWorld Holdings to Join S&amp;P SmallCap 600 http://www.streetinsider.com/Press+Releases/Ciena+Set+to+Join+S%26amp%3BP+500%3B+Arrowhead+Pharmaceuticals+to+Join+S%26amp%3BP+MidCap+400%3B+ADT+and+OneSpaWorld+Holdings+to+Join+S%26amp%3BP+SmallCap+600/25948554.html <div class="xn-content"> <p><span class="legendSpanClass"><location value="LU/us.ny.nyc" idsrc="xmltag.org" >NEW YORK</location></span>, <span class="legendSpanClass"><chron>Feb. 4, 2026</chron></span> /PRNewswire/ -- <span value="ACORN:1069625368" idsrc="xmltag.org" >S&amp;P Dow Jones Indices</span> will make the following changes to the S&amp;P 500, S&amp;P MidCap 400, S&amp;P SmallCap 600: </p> <ul type="disc"><li>S&amp;P MidCap 400 constituent <span value="NYSE:CIEN" idsrc="xmltag.org" >Ciena Corp.</span> (NYSE: CIEN) will replace <span value="NYSE:DAY" idsrc="xmltag.org" >Dayforce Inc.</span> (NYSE: DAY) in the S&amp;P 500, S&amp;P SmallCap 600 constituent <span value="NASDAQ-NMS:ARWR" idsrc="xmltag.org" >Arrowhead Pharmaceuticals Inc.</span> (<span>NASD</span>: ARWR) will replace Ciena in the S&amp;P MidCap 400, and <span value="NYSE:ADT" idsrc="xmltag.org" >ADT Inc.</span> (NYSE: ADT) will replace <span value="NASDAQ-NMS:ARWR" idsrc="xmltag.org" >Arrowhead Pharmaceuticals</span> in the S&amp;P SmallCap 600 effective prior http://www.streetinsider.com/Press+Releases/Ciena+Set+to+Join+S%26amp%3BP+500%3B+Arrowhead+Pharmaceuticals+to+Join+S%26amp%3BP+MidCap+400%3B+ADT+and+OneSpaWorld+Holdings+to+Join+S%26amp%3BP+SmallCap+600/25948554.html Wed, 04 Feb 2026 18:15:00 -0500 A.10696253 A.16214043 A.24194066 ADT ARWR CIEN DAY DVAX O.00173595 O.00641174 O.01522756 O.03712323 O.06070974 O.17262886 O.20250683 O.37300900 O.40949211 O.40956674 OSW SPGI Ciena Set to Join S&amp;P 500; Arrowhead Pharmaceuticals to Join S&amp;P MidCap 400; ADT and OneSpaWorld Holdings to Join S&amp;P SmallCap 600 http://www.streetinsider.com/Press+Releases/Ciena+Set+to+Join+S%26amp%3BP+500%3B+Arrowhead+Pharmaceuticals+to+Join+S%26amp%3BP+MidCap+400%3B+ADT+and+OneSpaWorld+Holdings+to+Join+S%26amp%3BP+SmallCap+600/25948554.html <div class="xn-content"> <p><span class="legendSpanClass"><location value="LU/us.ny.nyc" idsrc="xmltag.org" >NEW YORK</location></span>, <span class="legendSpanClass"><chron>Feb. 4, 2026</chron></span> /PRNewswire/ -- <span value="ACORN:1069625368" idsrc="xmltag.org" >S&amp;P Dow Jones Indices</span> will make the following changes to the S&amp;P 500, S&amp;P MidCap 400, S&amp;P SmallCap 600: </p> <ul type="disc"><li>S&amp;P MidCap 400 constituent <span value="NYSE:CIEN" idsrc="xmltag.org" >Ciena Corp.</span> (NYSE: CIEN) will replace <span value="NYSE:DAY" idsrc="xmltag.org" >Dayforce Inc.</span> (NYSE: DAY) in the S&amp;P 500, S&amp;P SmallCap 600 constituent <span value="NASDAQ-NMS:ARWR" idsrc="xmltag.org" >Arrowhead Pharmaceuticals Inc.</span> (<span>NASD</span>: ARWR) will replace Ciena in the S&amp;P MidCap 400, and <span value="NYSE:ADT" idsrc="xmltag.org" >ADT Inc.</span> (NYSE: ADT) will replace <span value="NASDAQ-NMS:ARWR" idsrc="xmltag.org" >Arrowhead Pharmaceuticals</span> in the S&amp;P SmallCap 600 effective prior http://www.streetinsider.com/Press+Releases/Ciena+Set+to+Join+S%26amp%3BP+500%3B+Arrowhead+Pharmaceuticals+to+Join+S%26amp%3BP+MidCap+400%3B+ADT+and+OneSpaWorld+Holdings+to+Join+S%26amp%3BP+SmallCap+600/25948554.html Wed, 04 Feb 2026 18:15:00 -0500 A.10696253 A.16214043 A.24194066 ADT ARWR CIEN DAY DVAX O.00173595 O.00641174 O.01522756 O.03712323 O.06070974 O.17262886 O.20250683 O.37300900 O.40949211 O.40956674 OSW SPGI Ciena Set to Join S&amp;P 500; Arrowhead Pharmaceuticals to Join S&amp;P MidCap 400; ADT and OneSpaWorld Holdings to Join S&amp;P SmallCap 600 http://www.streetinsider.com/Press+Releases/Ciena+Set+to+Join+S%26amp%3BP+500%3B+Arrowhead+Pharmaceuticals+to+Join+S%26amp%3BP+MidCap+400%3B+ADT+and+OneSpaWorld+Holdings+to+Join+S%26amp%3BP+SmallCap+600/25948554.html <div class="xn-content"> <p><span class="legendSpanClass"><location value="LU/us.ny.nyc" idsrc="xmltag.org" >NEW YORK</location></span>, <span class="legendSpanClass"><chron>Feb. 4, 2026</chron></span> /PRNewswire/ -- <span value="ACORN:1069625368" idsrc="xmltag.org" >S&amp;P Dow Jones Indices</span> will make the following changes to the S&amp;P 500, S&amp;P MidCap 400, S&amp;P SmallCap 600: </p> <ul type="disc"><li>S&amp;P MidCap 400 constituent <span value="NYSE:CIEN" idsrc="xmltag.org" >Ciena Corp.</span> (NYSE: CIEN) will replace <span value="NYSE:DAY" idsrc="xmltag.org" >Dayforce Inc.</span> (NYSE: DAY) in the S&amp;P 500, S&amp;P SmallCap 600 constituent <span value="NASDAQ-NMS:ARWR" idsrc="xmltag.org" >Arrowhead Pharmaceuticals Inc.</span> (<span>NASD</span>: ARWR) will replace Ciena in the S&amp;P MidCap 400, and <span value="NYSE:ADT" idsrc="xmltag.org" >ADT Inc.</span> (NYSE: ADT) will replace <span value="NASDAQ-NMS:ARWR" idsrc="xmltag.org" >Arrowhead Pharmaceuticals</span> in the S&amp;P SmallCap 600 effective prior http://www.streetinsider.com/Press+Releases/Ciena+Set+to+Join+S%26amp%3BP+500%3B+Arrowhead+Pharmaceuticals+to+Join+S%26amp%3BP+MidCap+400%3B+ADT+and+OneSpaWorld+Holdings+to+Join+S%26amp%3BP+SmallCap+600/25948554.html Wed, 04 Feb 2026 18:15:00 -0500 A.10696253 A.16214043 A.24194066 ADT ARWR CIEN DAY DVAX O.00173595 O.00641174 O.01522756 O.03712323 O.06070974 O.17262886 O.20250683 O.37300900 O.40949211 O.40956674 OSW SPGI Ciena Set to Join S&amp;P 500; Arrowhead Pharmaceuticals to Join S&amp;P MidCap 400; ADT and OneSpaWorld Holdings to Join S&amp;P SmallCap 600 http://www.streetinsider.com/Press+Releases/Ciena+Set+to+Join+S%26amp%3BP+500%3B+Arrowhead+Pharmaceuticals+to+Join+S%26amp%3BP+MidCap+400%3B+ADT+and+OneSpaWorld+Holdings+to+Join+S%26amp%3BP+SmallCap+600/25948554.html <div class="xn-content"> <p><span class="legendSpanClass"><location value="LU/us.ny.nyc" idsrc="xmltag.org" >NEW YORK</location></span>, <span class="legendSpanClass"><chron>Feb. 4, 2026</chron></span> /PRNewswire/ -- <span value="ACORN:1069625368" idsrc="xmltag.org" >S&amp;P Dow Jones Indices</span> will make the following changes to the S&amp;P 500, S&amp;P MidCap 400, S&amp;P SmallCap 600: </p> <ul type="disc"><li>S&amp;P MidCap 400 constituent <span value="NYSE:CIEN" idsrc="xmltag.org" >Ciena Corp.</span> (NYSE: CIEN) will replace <span value="NYSE:DAY" idsrc="xmltag.org" >Dayforce Inc.</span> (NYSE: DAY) in the S&amp;P 500, S&amp;P SmallCap 600 constituent <span value="NASDAQ-NMS:ARWR" idsrc="xmltag.org" >Arrowhead Pharmaceuticals Inc.</span> (<span>NASD</span>: ARWR) will replace Ciena in the S&amp;P MidCap 400, and <span value="NYSE:ADT" idsrc="xmltag.org" >ADT Inc.</span> (NYSE: ADT) will replace <span value="NASDAQ-NMS:ARWR" idsrc="xmltag.org" >Arrowhead Pharmaceuticals</span> in the S&amp;P SmallCap 600 effective prior http://www.streetinsider.com/Press+Releases/Ciena+Set+to+Join+S%26amp%3BP+500%3B+Arrowhead+Pharmaceuticals+to+Join+S%26amp%3BP+MidCap+400%3B+ADT+and+OneSpaWorld+Holdings+to+Join+S%26amp%3BP+SmallCap+600/25948554.html Wed, 04 Feb 2026 18:15:00 -0500 A.10696253 A.16214043 A.24194066 ADT ARWR CIEN DAY DVAX O.00173595 O.00641174 O.01522756 O.03712323 O.06070974 O.17262886 O.20250683 O.37300900 O.40949211 O.40956674 OSW SPGI Ciena Set to Join S&amp;P 500; Arrowhead Pharmaceuticals to Join S&amp;P MidCap 400; ADT and OneSpaWorld Holdings to Join S&amp;P SmallCap 600 http://www.streetinsider.com/Press+Releases/Ciena+Set+to+Join+S%26amp%3BP+500%3B+Arrowhead+Pharmaceuticals+to+Join+S%26amp%3BP+MidCap+400%3B+ADT+and+OneSpaWorld+Holdings+to+Join+S%26amp%3BP+SmallCap+600/25948554.html <div class="xn-content"> <p><span class="legendSpanClass"><location value="LU/us.ny.nyc" idsrc="xmltag.org" >NEW YORK</location></span>, <span class="legendSpanClass"><chron>Feb. 4, 2026</chron></span> /PRNewswire/ -- <span value="ACORN:1069625368" idsrc="xmltag.org" >S&amp;P Dow Jones Indices</span> will make the following changes to the S&amp;P 500, S&amp;P MidCap 400, S&amp;P SmallCap 600: </p> <ul type="disc"><li>S&amp;P MidCap 400 constituent <span value="NYSE:CIEN" idsrc="xmltag.org" >Ciena Corp.</span> (NYSE: CIEN) will replace <span value="NYSE:DAY" idsrc="xmltag.org" >Dayforce Inc.</span> (NYSE: DAY) in the S&amp;P 500, S&amp;P SmallCap 600 constituent <span value="NASDAQ-NMS:ARWR" idsrc="xmltag.org" >Arrowhead Pharmaceuticals Inc.</span> (<span>NASD</span>: ARWR) will replace Ciena in the S&amp;P MidCap 400, and <span value="NYSE:ADT" idsrc="xmltag.org" >ADT Inc.</span> (NYSE: ADT) will replace <span value="NASDAQ-NMS:ARWR" idsrc="xmltag.org" >Arrowhead Pharmaceuticals</span> in the S&amp;P SmallCap 600 effective prior http://www.streetinsider.com/Press+Releases/Ciena+Set+to+Join+S%26amp%3BP+500%3B+Arrowhead+Pharmaceuticals+to+Join+S%26amp%3BP+MidCap+400%3B+ADT+and+OneSpaWorld+Holdings+to+Join+S%26amp%3BP+SmallCap+600/25948554.html Wed, 04 Feb 2026 18:15:00 -0500 A.10696253 A.16214043 A.24194066 ADT ARWR CIEN DAY DVAX O.00173595 O.00641174 O.01522756 O.03712323 O.06070974 O.17262886 O.20250683 O.37300900 O.40949211 O.40956674 OSW SPGI Ciena Set to Join S&amp;P 500; Arrowhead Pharmaceuticals to Join S&amp;P MidCap 400; ADT and OneSpaWorld Holdings to Join S&amp;P SmallCap 600 http://www.streetinsider.com/Press+Releases/Ciena+Set+to+Join+S%26amp%3BP+500%3B+Arrowhead+Pharmaceuticals+to+Join+S%26amp%3BP+MidCap+400%3B+ADT+and+OneSpaWorld+Holdings+to+Join+S%26amp%3BP+SmallCap+600/25948554.html <div class="xn-content"> <p><span class="legendSpanClass"><location value="LU/us.ny.nyc" idsrc="xmltag.org" >NEW YORK</location></span>, <span class="legendSpanClass"><chron>Feb. 4, 2026</chron></span> /PRNewswire/ -- <span value="ACORN:1069625368" idsrc="xmltag.org" >S&amp;P Dow Jones Indices</span> will make the following changes to the S&amp;P 500, S&amp;P MidCap 400, S&amp;P SmallCap 600: </p> <ul type="disc"><li>S&amp;P MidCap 400 constituent <span value="NYSE:CIEN" idsrc="xmltag.org" >Ciena Corp.</span> (NYSE: CIEN) will replace <span value="NYSE:DAY" idsrc="xmltag.org" >Dayforce Inc.</span> (NYSE: DAY) in the S&amp;P 500, S&amp;P SmallCap 600 constituent <span value="NASDAQ-NMS:ARWR" idsrc="xmltag.org" >Arrowhead Pharmaceuticals Inc.</span> (<span>NASD</span>: ARWR) will replace Ciena in the S&amp;P MidCap 400, and <span value="NYSE:ADT" idsrc="xmltag.org" >ADT Inc.</span> (NYSE: ADT) will replace <span value="NASDAQ-NMS:ARWR" idsrc="xmltag.org" >Arrowhead Pharmaceuticals</span> in the S&amp;P SmallCap 600 effective prior http://www.streetinsider.com/Press+Releases/Ciena+Set+to+Join+S%26amp%3BP+500%3B+Arrowhead+Pharmaceuticals+to+Join+S%26amp%3BP+MidCap+400%3B+ADT+and+OneSpaWorld+Holdings+to+Join+S%26amp%3BP+SmallCap+600/25948554.html Wed, 04 Feb 2026 18:15:00 -0500 A.10696253 A.16214043 A.24194066 ADT ARWR CIEN DAY DVAX O.00173595 O.00641174 O.01522756 O.03712323 O.06070974 O.17262886 O.20250683 O.37300900 O.40949211 O.40956674 OSW SPGI Ciena Set to Join S&amp;P 500; Arrowhead Pharmaceuticals to Join S&amp;P MidCap 400; ADT and OneSpaWorld Holdings to Join S&amp;P SmallCap 600 http://www.streetinsider.com/Press+Releases/Ciena+Set+to+Join+S%26amp%3BP+500%3B+Arrowhead+Pharmaceuticals+to+Join+S%26amp%3BP+MidCap+400%3B+ADT+and+OneSpaWorld+Holdings+to+Join+S%26amp%3BP+SmallCap+600/25948554.html <div class="xn-content"> <p><span class="legendSpanClass"><location value="LU/us.ny.nyc" idsrc="xmltag.org" >NEW YORK</location></span>, <span class="legendSpanClass"><chron>Feb. 4, 2026</chron></span> /PRNewswire/ -- <span value="ACORN:1069625368" idsrc="xmltag.org" >S&amp;P Dow Jones Indices</span> will make the following changes to the S&amp;P 500, S&amp;P MidCap 400, S&amp;P SmallCap 600: </p> <ul type="disc"><li>S&amp;P MidCap 400 constituent <span value="NYSE:CIEN" idsrc="xmltag.org" >Ciena Corp.</span> (NYSE: CIEN) will replace <span value="NYSE:DAY" idsrc="xmltag.org" >Dayforce Inc.</span> (NYSE: DAY) in the S&amp;P 500, S&amp;P SmallCap 600 constituent <span value="NASDAQ-NMS:ARWR" idsrc="xmltag.org" >Arrowhead Pharmaceuticals Inc.</span> (<span>NASD</span>: ARWR) will replace Ciena in the S&amp;P MidCap 400, and <span value="NYSE:ADT" idsrc="xmltag.org" >ADT Inc.</span> (NYSE: ADT) will replace <span value="NASDAQ-NMS:ARWR" idsrc="xmltag.org" >Arrowhead Pharmaceuticals</span> in the S&amp;P SmallCap 600 effective prior http://www.streetinsider.com/Press+Releases/Ciena+Set+to+Join+S%26amp%3BP+500%3B+Arrowhead+Pharmaceuticals+to+Join+S%26amp%3BP+MidCap+400%3B+ADT+and+OneSpaWorld+Holdings+to+Join+S%26amp%3BP+SmallCap+600/25948554.html Wed, 04 Feb 2026 18:15:00 -0500 A.10696253 A.16214043 A.24194066 ADT ARWR CIEN DAY DVAX O.00173595 O.00641174 O.01522756 O.03712323 O.06070974 O.17262886 O.20250683 O.37300900 O.40949211 O.40956674 OSW SPGI Ciena Set to Join S&amp;P 500; Arrowhead Pharmaceuticals to Join S&amp;P MidCap 400; ADT and OneSpaWorld Holdings to Join S&amp;P SmallCap 600 http://www.streetinsider.com/Press+Releases/Ciena+Set+to+Join+S%26amp%3BP+500%3B+Arrowhead+Pharmaceuticals+to+Join+S%26amp%3BP+MidCap+400%3B+ADT+and+OneSpaWorld+Holdings+to+Join+S%26amp%3BP+SmallCap+600/25948554.html <div class="xn-content"> <p><span class="legendSpanClass"><location value="LU/us.ny.nyc" idsrc="xmltag.org" >NEW YORK</location></span>, <span class="legendSpanClass"><chron>Feb. 4, 2026</chron></span> /PRNewswire/ -- <span value="ACORN:1069625368" idsrc="xmltag.org" >S&amp;P Dow Jones Indices</span> will make the following changes to the S&amp;P 500, S&amp;P MidCap 400, S&amp;P SmallCap 600: </p> <ul type="disc"><li>S&amp;P MidCap 400 constituent <span value="NYSE:CIEN" idsrc="xmltag.org" >Ciena Corp.</span> (NYSE: CIEN) will replace <span value="NYSE:DAY" idsrc="xmltag.org" >Dayforce Inc.</span> (NYSE: DAY) in the S&amp;P 500, S&amp;P SmallCap 600 constituent <span value="NASDAQ-NMS:ARWR" idsrc="xmltag.org" >Arrowhead Pharmaceuticals Inc.</span> (<span>NASD</span>: ARWR) will replace Ciena in the S&amp;P MidCap 400, and <span value="NYSE:ADT" idsrc="xmltag.org" >ADT Inc.</span> (NYSE: ADT) will replace <span value="NASDAQ-NMS:ARWR" idsrc="xmltag.org" >Arrowhead Pharmaceuticals</span> in the S&amp;P SmallCap 600 effective prior http://www.streetinsider.com/Press+Releases/Ciena+Set+to+Join+S%26amp%3BP+500%3B+Arrowhead+Pharmaceuticals+to+Join+S%26amp%3BP+MidCap+400%3B+ADT+and+OneSpaWorld+Holdings+to+Join+S%26amp%3BP+SmallCap+600/25948554.html Wed, 04 Feb 2026 18:15:00 -0500 A.10696253 A.16214043 A.24194066 ADT ARWR CIEN DAY DVAX O.00173595 O.00641174 O.01522756 O.03712323 O.06070974 O.17262886 O.20250683 O.37300900 O.40949211 O.40956674 OSW SPGI Ciena Set to Join S&amp;P 500; Arrowhead Pharmaceuticals to Join S&amp;P MidCap 400; ADT and OneSpaWorld Holdings to Join S&amp;P SmallCap 600 http://www.streetinsider.com/Press+Releases/Ciena+Set+to+Join+S%26amp%3BP+500%3B+Arrowhead+Pharmaceuticals+to+Join+S%26amp%3BP+MidCap+400%3B+ADT+and+OneSpaWorld+Holdings+to+Join+S%26amp%3BP+SmallCap+600/25948554.html <div class="xn-content"> <p><span class="legendSpanClass"><location value="LU/us.ny.nyc" idsrc="xmltag.org" >NEW YORK</location></span>, <span class="legendSpanClass"><chron>Feb. 4, 2026</chron></span> /PRNewswire/ -- <span value="ACORN:1069625368" idsrc="xmltag.org" >S&amp;P Dow Jones Indices</span> will make the following changes to the S&amp;P 500, S&amp;P MidCap 400, S&amp;P SmallCap 600: </p> <ul type="disc"><li>S&amp;P MidCap 400 constituent <span value="NYSE:CIEN" idsrc="xmltag.org" >Ciena Corp.</span> (NYSE: CIEN) will replace <span value="NYSE:DAY" idsrc="xmltag.org" >Dayforce Inc.</span> (NYSE: DAY) in the S&amp;P 500, S&amp;P SmallCap 600 constituent <span value="NASDAQ-NMS:ARWR" idsrc="xmltag.org" >Arrowhead Pharmaceuticals Inc.</span> (<span>NASD</span>: ARWR) will replace Ciena in the S&amp;P MidCap 400, and <span value="NYSE:ADT" idsrc="xmltag.org" >ADT Inc.</span> (NYSE: ADT) will replace <span value="NASDAQ-NMS:ARWR" idsrc="xmltag.org" >Arrowhead Pharmaceuticals</span> in the S&amp;P SmallCap 600 effective prior http://www.streetinsider.com/Press+Releases/Ciena+Set+to+Join+S%26amp%3BP+500%3B+Arrowhead+Pharmaceuticals+to+Join+S%26amp%3BP+MidCap+400%3B+ADT+and+OneSpaWorld+Holdings+to+Join+S%26amp%3BP+SmallCap+600/25948554.html Wed, 04 Feb 2026 18:15:00 -0500 A.10696253 A.16214043 A.24194066 ADT ARWR CIEN DAY DVAX O.00173595 O.00641174 O.01522756 O.03712323 O.06070974 O.17262886 O.20250683 O.37300900 O.40949211 O.40956674 OSW SPGI Ciena Set to Join S&amp;P 500; Arrowhead Pharmaceuticals to Join S&amp;P MidCap 400; ADT and OneSpaWorld Holdings to Join S&amp;P SmallCap 600 http://www.streetinsider.com/Press+Releases/Ciena+Set+to+Join+S%26amp%3BP+500%3B+Arrowhead+Pharmaceuticals+to+Join+S%26amp%3BP+MidCap+400%3B+ADT+and+OneSpaWorld+Holdings+to+Join+S%26amp%3BP+SmallCap+600/25948554.html <div class="xn-content"> <p><span class="legendSpanClass"><location value="LU/us.ny.nyc" idsrc="xmltag.org" >NEW YORK</location></span>, <span class="legendSpanClass"><chron>Feb. 4, 2026</chron></span> /PRNewswire/ -- <span value="ACORN:1069625368" idsrc="xmltag.org" >S&amp;P Dow Jones Indices</span> will make the following changes to the S&amp;P 500, S&amp;P MidCap 400, S&amp;P SmallCap 600: </p> <ul type="disc"><li>S&amp;P MidCap 400 constituent <span value="NYSE:CIEN" idsrc="xmltag.org" >Ciena Corp.</span> (NYSE: CIEN) will replace <span value="NYSE:DAY" idsrc="xmltag.org" >Dayforce Inc.</span> (NYSE: DAY) in the S&amp;P 500, S&amp;P SmallCap 600 constituent <span value="NASDAQ-NMS:ARWR" idsrc="xmltag.org" >Arrowhead Pharmaceuticals Inc.</span> (<span>NASD</span>: ARWR) will replace Ciena in the S&amp;P MidCap 400, and <span value="NYSE:ADT" idsrc="xmltag.org" >ADT Inc.</span> (NYSE: ADT) will replace <span value="NASDAQ-NMS:ARWR" idsrc="xmltag.org" >Arrowhead Pharmaceuticals</span> in the S&amp;P SmallCap 600 effective prior http://www.streetinsider.com/Press+Releases/Ciena+Set+to+Join+S%26amp%3BP+500%3B+Arrowhead+Pharmaceuticals+to+Join+S%26amp%3BP+MidCap+400%3B+ADT+and+OneSpaWorld+Holdings+to+Join+S%26amp%3BP+SmallCap+600/25948554.html Wed, 04 Feb 2026 18:15:00 -0500 A.10696253 A.16214043 A.24194066 ADT ARWR CIEN DAY DVAX O.00173595 O.00641174 O.01522756 O.03712323 O.06070974 O.17262886 O.20250683 O.37300900 O.40949211 O.40956674 OSW SPGI Ciena Set to Join S&amp;P 500; Arrowhead Pharmaceuticals to Join S&amp;P MidCap 400; ADT and OneSpaWorld Holdings to Join S&amp;P SmallCap 600 http://www.streetinsider.com/Press+Releases/Ciena+Set+to+Join+S%26amp%3BP+500%3B+Arrowhead+Pharmaceuticals+to+Join+S%26amp%3BP+MidCap+400%3B+ADT+and+OneSpaWorld+Holdings+to+Join+S%26amp%3BP+SmallCap+600/25948554.html <div class="xn-content"> <p><span class="legendSpanClass"><location value="LU/us.ny.nyc" idsrc="xmltag.org" >NEW YORK</location></span>, <span class="legendSpanClass"><chron>Feb. 4, 2026</chron></span> /PRNewswire/ -- <span value="ACORN:1069625368" idsrc="xmltag.org" >S&amp;P Dow Jones Indices</span> will make the following changes to the S&amp;P 500, S&amp;P MidCap 400, S&amp;P SmallCap 600: </p> <ul type="disc"><li>S&amp;P MidCap 400 constituent <span value="NYSE:CIEN" idsrc="xmltag.org" >Ciena Corp.</span> (NYSE: CIEN) will replace <span value="NYSE:DAY" idsrc="xmltag.org" >Dayforce Inc.</span> (NYSE: DAY) in the S&amp;P 500, S&amp;P SmallCap 600 constituent <span value="NASDAQ-NMS:ARWR" idsrc="xmltag.org" >Arrowhead Pharmaceuticals Inc.</span> (<span>NASD</span>: ARWR) will replace Ciena in the S&amp;P MidCap 400, and <span value="NYSE:ADT" idsrc="xmltag.org" >ADT Inc.</span> (NYSE: ADT) will replace <span value="NASDAQ-NMS:ARWR" idsrc="xmltag.org" >Arrowhead Pharmaceuticals</span> in the S&amp;P SmallCap 600 effective prior http://www.streetinsider.com/Press+Releases/Ciena+Set+to+Join+S%26amp%3BP+500%3B+Arrowhead+Pharmaceuticals+to+Join+S%26amp%3BP+MidCap+400%3B+ADT+and+OneSpaWorld+Holdings+to+Join+S%26amp%3BP+SmallCap+600/25948554.html Wed, 04 Feb 2026 18:15:00 -0500 A.10696253 A.16214043 A.24194066 ADT ARWR CIEN DAY DVAX O.00173595 O.00641174 O.01522756 O.03712323 O.06070974 O.17262886 O.20250683 O.37300900 O.40949211 O.40956674 OSW SPGI Ciena Set to Join S&amp;P 500; Arrowhead Pharmaceuticals to Join S&amp;P MidCap 400; ADT and OneSpaWorld Holdings to Join S&amp;P SmallCap 600 http://www.streetinsider.com/Press+Releases/Ciena+Set+to+Join+S%26amp%3BP+500%3B+Arrowhead+Pharmaceuticals+to+Join+S%26amp%3BP+MidCap+400%3B+ADT+and+OneSpaWorld+Holdings+to+Join+S%26amp%3BP+SmallCap+600/25948554.html <div class="xn-content"> <p><span class="legendSpanClass"><location value="LU/us.ny.nyc" idsrc="xmltag.org" >NEW YORK</location></span>, <span class="legendSpanClass"><chron>Feb. 4, 2026</chron></span> /PRNewswire/ -- <span value="ACORN:1069625368" idsrc="xmltag.org" >S&amp;P Dow Jones Indices</span> will make the following changes to the S&amp;P 500, S&amp;P MidCap 400, S&amp;P SmallCap 600: </p> <ul type="disc"><li>S&amp;P MidCap 400 constituent <span value="NYSE:CIEN" idsrc="xmltag.org" >Ciena Corp.</span> (NYSE: CIEN) will replace <span value="NYSE:DAY" idsrc="xmltag.org" >Dayforce Inc.</span> (NYSE: DAY) in the S&amp;P 500, S&amp;P SmallCap 600 constituent <span value="NASDAQ-NMS:ARWR" idsrc="xmltag.org" >Arrowhead Pharmaceuticals Inc.</span> (<span>NASD</span>: ARWR) will replace Ciena in the S&amp;P MidCap 400, and <span value="NYSE:ADT" idsrc="xmltag.org" >ADT Inc.</span> (NYSE: ADT) will replace <span value="NASDAQ-NMS:ARWR" idsrc="xmltag.org" >Arrowhead Pharmaceuticals</span> in the S&amp;P SmallCap 600 effective prior http://www.streetinsider.com/Press+Releases/Ciena+Set+to+Join+S%26amp%3BP+500%3B+Arrowhead+Pharmaceuticals+to+Join+S%26amp%3BP+MidCap+400%3B+ADT+and+OneSpaWorld+Holdings+to+Join+S%26amp%3BP+SmallCap+600/25948554.html Wed, 04 Feb 2026 18:15:00 -0500 A.10696253 A.16214043 A.24194066 ADT ARWR CIEN DAY DVAX O.00173595 O.00641174 O.01522756 O.03712323 O.06070974 O.17262886 O.20250683 O.37300900 O.40949211 O.40956674 OSW SPGI Ciena Set to Join S&amp;P 500; Arrowhead Pharmaceuticals to Join S&amp;P MidCap 400; ADT and OneSpaWorld Holdings to Join S&amp;P SmallCap 600 http://www.streetinsider.com/Press+Releases/Ciena+Set+to+Join+S%26amp%3BP+500%3B+Arrowhead+Pharmaceuticals+to+Join+S%26amp%3BP+MidCap+400%3B+ADT+and+OneSpaWorld+Holdings+to+Join+S%26amp%3BP+SmallCap+600/25948554.html <div class="xn-content"> <p><span class="legendSpanClass"><location value="LU/us.ny.nyc" idsrc="xmltag.org" >NEW YORK</location></span>, <span class="legendSpanClass"><chron>Feb. 4, 2026</chron></span> /PRNewswire/ -- <span value="ACORN:1069625368" idsrc="xmltag.org" >S&amp;P Dow Jones Indices</span> will make the following changes to the S&amp;P 500, S&amp;P MidCap 400, S&amp;P SmallCap 600: </p> <ul type="disc"><li>S&amp;P MidCap 400 constituent <span value="NYSE:CIEN" idsrc="xmltag.org" >Ciena Corp.</span> (NYSE: CIEN) will replace <span value="NYSE:DAY" idsrc="xmltag.org" >Dayforce Inc.</span> (NYSE: DAY) in the S&amp;P 500, S&amp;P SmallCap 600 constituent <span value="NASDAQ-NMS:ARWR" idsrc="xmltag.org" >Arrowhead Pharmaceuticals Inc.</span> (<span>NASD</span>: ARWR) will replace Ciena in the S&amp;P MidCap 400, and <span value="NYSE:ADT" idsrc="xmltag.org" >ADT Inc.</span> (NYSE: ADT) will replace <span value="NASDAQ-NMS:ARWR" idsrc="xmltag.org" >Arrowhead Pharmaceuticals</span> in the S&amp;P SmallCap 600 effective prior http://www.streetinsider.com/Press+Releases/Ciena+Set+to+Join+S%26amp%3BP+500%3B+Arrowhead+Pharmaceuticals+to+Join+S%26amp%3BP+MidCap+400%3B+ADT+and+OneSpaWorld+Holdings+to+Join+S%26amp%3BP+SmallCap+600/25948554.html Wed, 04 Feb 2026 18:15:00 -0500 A.10696253 A.16214043 A.24194066 ADT ARWR CIEN DAY DVAX O.00173595 O.00641174 O.01522756 O.03712323 O.06070974 O.17262886 O.20250683 O.37300900 O.40949211 O.40956674 OSW SPGI Ciena Set to Join S&amp;P 500; Arrowhead Pharmaceuticals to Join S&amp;P MidCap 400; ADT and OneSpaWorld Holdings to Join S&amp;P SmallCap 600 http://www.streetinsider.com/Press+Releases/Ciena+Set+to+Join+S%26amp%3BP+500%3B+Arrowhead+Pharmaceuticals+to+Join+S%26amp%3BP+MidCap+400%3B+ADT+and+OneSpaWorld+Holdings+to+Join+S%26amp%3BP+SmallCap+600/25948554.html <div class="xn-content"> <p><span class="legendSpanClass"><location value="LU/us.ny.nyc" idsrc="xmltag.org" >NEW YORK</location></span>, <span class="legendSpanClass"><chron>Feb. 4, 2026</chron></span> /PRNewswire/ -- <span value="ACORN:1069625368" idsrc="xmltag.org" >S&amp;P Dow Jones Indices</span> will make the following changes to the S&amp;P 500, S&amp;P MidCap 400, S&amp;P SmallCap 600: </p> <ul type="disc"><li>S&amp;P MidCap 400 constituent <span value="NYSE:CIEN" idsrc="xmltag.org" >Ciena Corp.</span> (NYSE: CIEN) will replace <span value="NYSE:DAY" idsrc="xmltag.org" >Dayforce Inc.</span> (NYSE: DAY) in the S&amp;P 500, S&amp;P SmallCap 600 constituent <span value="NASDAQ-NMS:ARWR" idsrc="xmltag.org" >Arrowhead Pharmaceuticals Inc.</span> (<span>NASD</span>: ARWR) will replace Ciena in the S&amp;P MidCap 400, and <span value="NYSE:ADT" idsrc="xmltag.org" >ADT Inc.</span> (NYSE: ADT) will replace <span value="NASDAQ-NMS:ARWR" idsrc="xmltag.org" >Arrowhead Pharmaceuticals</span> in the S&amp;P SmallCap 600 effective prior http://www.streetinsider.com/Press+Releases/Ciena+Set+to+Join+S%26amp%3BP+500%3B+Arrowhead+Pharmaceuticals+to+Join+S%26amp%3BP+MidCap+400%3B+ADT+and+OneSpaWorld+Holdings+to+Join+S%26amp%3BP+SmallCap+600/25948554.html Wed, 04 Feb 2026 18:15:00 -0500 A.10696253 A.16214043 A.24194066 ADT ARWR CIEN DAY DVAX O.00173595 O.00641174 O.01522756 O.03712323 O.06070974 O.17262886 O.20250683 O.37300900 O.40949211 O.40956674 OSW SPGI Ciena Set to Join S&amp;P 500; Arrowhead Pharmaceuticals to Join S&amp;P MidCap 400; ADT and OneSpaWorld Holdings to Join S&amp;P SmallCap 600 http://www.streetinsider.com/PRNewswire/Ciena+Set+to+Join+S%26amp%3BP+500%3B+Arrowhead+Pharmaceuticals+to+Join+S%26amp%3BP+MidCap+400%3B+ADT+and+OneSpaWorld+Holdings+to+Join+S%26amp%3BP+SmallCap+600/25948554.html <div class="xn-content"> <p><span class="legendSpanClass"><location value="LU/us.ny.nyc" idsrc="xmltag.org" >NEW YORK</location></span>, <span class="legendSpanClass"><chron>Feb. 4, 2026</chron></span> /PRNewswire/ -- <span value="ACORN:1069625368" idsrc="xmltag.org" >S&amp;P Dow Jones Indices</span> will make the following changes to the S&amp;P 500, S&amp;P MidCap 400, S&amp;P SmallCap 600: </p> <ul type="disc"><li>S&amp;P MidCap 400 constituent <span value="NYSE:CIEN" idsrc="xmltag.org" >Ciena Corp.</span> (NYSE: CIEN) will replace <span value="NYSE:DAY" idsrc="xmltag.org" >Dayforce Inc.</span> (NYSE: DAY) in the S&amp;P 500, S&amp;P SmallCap 600 constituent <span value="NASDAQ-NMS:ARWR" idsrc="xmltag.org" >Arrowhead Pharmaceuticals Inc.</span> (<span>NASD</span>: ARWR) will replace Ciena in the S&amp;P MidCap 400, and <span value="NYSE:ADT" idsrc="xmltag.org" >ADT Inc.</span> (NYSE: ADT) will replace <span value="NASDAQ-NMS:ARWR" idsrc="xmltag.org" >Arrowhead Pharmaceuticals</span> in the S&amp;P SmallCap 600 effective prior http://www.streetinsider.com/PRNewswire/Ciena+Set+to+Join+S%26amp%3BP+500%3B+Arrowhead+Pharmaceuticals+to+Join+S%26amp%3BP+MidCap+400%3B+ADT+and+OneSpaWorld+Holdings+to+Join+S%26amp%3BP+SmallCap+600/25948554.html Wed, 04 Feb 2026 18:15:00 -0500 A.10696253 A.16214043 A.24194066 ADT ARWR CIEN DAY DVAX O.00173595 O.00641174 O.01522756 O.03712323 O.06070974 O.17262886 O.20250683 O.37300900 O.40949211 O.40956674 OSW SPGI Ciena Set to Join S&amp;P 500; Arrowhead Pharmaceuticals to Join S&amp;P MidCap 400; ADT and OneSpaWorld Holdings to Join S&amp;P SmallCap 600 http://www.streetinsider.com/PRNewswire/Ciena+Set+to+Join+S%26amp%3BP+500%3B+Arrowhead+Pharmaceuticals+to+Join+S%26amp%3BP+MidCap+400%3B+ADT+and+OneSpaWorld+Holdings+to+Join+S%26amp%3BP+SmallCap+600/25948554.html <div class="xn-content"> <p><span class="legendSpanClass"><location value="LU/us.ny.nyc" idsrc="xmltag.org" >NEW YORK</location></span>, <span class="legendSpanClass"><chron>Feb. 4, 2026</chron></span> /PRNewswire/ -- <span value="ACORN:1069625368" idsrc="xmltag.org" >S&amp;P Dow Jones Indices</span> will make the following changes to the S&amp;P 500, S&amp;P MidCap 400, S&amp;P SmallCap 600: </p> <ul type="disc"><li>S&amp;P MidCap 400 constituent <span value="NYSE:CIEN" idsrc="xmltag.org" >Ciena Corp.</span> (NYSE: CIEN) will replace <span value="NYSE:DAY" idsrc="xmltag.org" >Dayforce Inc.</span> (NYSE: DAY) in the S&amp;P 500, S&amp;P SmallCap 600 constituent <span value="NASDAQ-NMS:ARWR" idsrc="xmltag.org" >Arrowhead Pharmaceuticals Inc.</span> (<span>NASD</span>: ARWR) will replace Ciena in the S&amp;P MidCap 400, and <span value="NYSE:ADT" idsrc="xmltag.org" >ADT Inc.</span> (NYSE: ADT) will replace <span value="NASDAQ-NMS:ARWR" idsrc="xmltag.org" >Arrowhead Pharmaceuticals</span> in the S&amp;P SmallCap 600 effective prior http://www.streetinsider.com/PRNewswire/Ciena+Set+to+Join+S%26amp%3BP+500%3B+Arrowhead+Pharmaceuticals+to+Join+S%26amp%3BP+MidCap+400%3B+ADT+and+OneSpaWorld+Holdings+to+Join+S%26amp%3BP+SmallCap+600/25948554.html Wed, 04 Feb 2026 18:15:00 -0500 A.10696253 A.16214043 A.24194066 ADT ARWR CIEN DAY DVAX O.00173595 O.00641174 O.01522756 O.03712323 O.06070974 O.17262886 O.20250683 O.37300900 O.40949211 O.40956674 OSW SPGI Ciena Set to Join S&amp;P 500; Arrowhead Pharmaceuticals to Join S&amp;P MidCap 400; ADT and OneSpaWorld Holdings to Join S&amp;P SmallCap 600 http://www.streetinsider.com/PRNewswire/Ciena+Set+to+Join+S%26amp%3BP+500%3B+Arrowhead+Pharmaceuticals+to+Join+S%26amp%3BP+MidCap+400%3B+ADT+and+OneSpaWorld+Holdings+to+Join+S%26amp%3BP+SmallCap+600/25948554.html <div class="xn-content"> <p><span class="legendSpanClass"><location value="LU/us.ny.nyc" idsrc="xmltag.org" >NEW YORK</location></span>, <span class="legendSpanClass"><chron>Feb. 4, 2026</chron></span> /PRNewswire/ -- <span value="ACORN:1069625368" idsrc="xmltag.org" >S&amp;P Dow Jones Indices</span> will make the following changes to the S&amp;P 500, S&amp;P MidCap 400, S&amp;P SmallCap 600: </p> <ul type="disc"><li>S&amp;P MidCap 400 constituent <span value="NYSE:CIEN" idsrc="xmltag.org" >Ciena Corp.</span> (NYSE: CIEN) will replace <span value="NYSE:DAY" idsrc="xmltag.org" >Dayforce Inc.</span> (NYSE: DAY) in the S&amp;P 500, S&amp;P SmallCap 600 constituent <span value="NASDAQ-NMS:ARWR" idsrc="xmltag.org" >Arrowhead Pharmaceuticals Inc.</span> (<span>NASD</span>: ARWR) will replace Ciena in the S&amp;P MidCap 400, and <span value="NYSE:ADT" idsrc="xmltag.org" >ADT Inc.</span> (NYSE: ADT) will replace <span value="NASDAQ-NMS:ARWR" idsrc="xmltag.org" >Arrowhead Pharmaceuticals</span> in the S&amp;P SmallCap 600 effective prior http://www.streetinsider.com/PRNewswire/Ciena+Set+to+Join+S%26amp%3BP+500%3B+Arrowhead+Pharmaceuticals+to+Join+S%26amp%3BP+MidCap+400%3B+ADT+and+OneSpaWorld+Holdings+to+Join+S%26amp%3BP+SmallCap+600/25948554.html Wed, 04 Feb 2026 18:15:00 -0500 A.10696253 A.16214043 A.24194066 ADT ARWR CIEN DAY DVAX O.00173595 O.00641174 O.01522756 O.03712323 O.06070974 O.17262886 O.20250683 O.37300900 O.40949211 O.40956674 OSW SPGI Ciena Set to Join S&amp;P 500; Arrowhead Pharmaceuticals to Join S&amp;P MidCap 400; ADT and OneSpaWorld Holdings to Join S&amp;P SmallCap 600 http://www.streetinsider.com/PRNewswire/Ciena+Set+to+Join+S%26amp%3BP+500%3B+Arrowhead+Pharmaceuticals+to+Join+S%26amp%3BP+MidCap+400%3B+ADT+and+OneSpaWorld+Holdings+to+Join+S%26amp%3BP+SmallCap+600/25948554.html <div class="xn-content"> <p><span class="legendSpanClass"><location value="LU/us.ny.nyc" idsrc="xmltag.org" >NEW YORK</location></span>, <span class="legendSpanClass"><chron>Feb. 4, 2026</chron></span> /PRNewswire/ -- <span value="ACORN:1069625368" idsrc="xmltag.org" >S&amp;P Dow Jones Indices</span> will make the following changes to the S&amp;P 500, S&amp;P MidCap 400, S&amp;P SmallCap 600: </p> <ul type="disc"><li>S&amp;P MidCap 400 constituent <span value="NYSE:CIEN" idsrc="xmltag.org" >Ciena Corp.</span> (NYSE: CIEN) will replace <span value="NYSE:DAY" idsrc="xmltag.org" >Dayforce Inc.</span> (NYSE: DAY) in the S&amp;P 500, S&amp;P SmallCap 600 constituent <span value="NASDAQ-NMS:ARWR" idsrc="xmltag.org" >Arrowhead Pharmaceuticals Inc.</span> (<span>NASD</span>: ARWR) will replace Ciena in the S&amp;P MidCap 400, and <span value="NYSE:ADT" idsrc="xmltag.org" >ADT Inc.</span> (NYSE: ADT) will replace <span value="NASDAQ-NMS:ARWR" idsrc="xmltag.org" >Arrowhead Pharmaceuticals</span> in the S&amp;P SmallCap 600 effective prior http://www.streetinsider.com/PRNewswire/Ciena+Set+to+Join+S%26amp%3BP+500%3B+Arrowhead+Pharmaceuticals+to+Join+S%26amp%3BP+MidCap+400%3B+ADT+and+OneSpaWorld+Holdings+to+Join+S%26amp%3BP+SmallCap+600/25948554.html Wed, 04 Feb 2026 18:15:00 -0500 A.10696253 A.16214043 A.24194066 ADT ARWR CIEN DAY DVAX O.00173595 O.00641174 O.01522756 O.03712323 O.06070974 O.17262886 O.20250683 O.37300900 O.40949211 O.40956674 OSW SPGI Ciena Set to Join S&amp;P 500; Arrowhead Pharmaceuticals to Join S&amp;P MidCap 400; ADT and OneSpaWorld Holdings to Join S&amp;P SmallCap 600 http://www.streetinsider.com/PRNewswire/Ciena+Set+to+Join+S%26amp%3BP+500%3B+Arrowhead+Pharmaceuticals+to+Join+S%26amp%3BP+MidCap+400%3B+ADT+and+OneSpaWorld+Holdings+to+Join+S%26amp%3BP+SmallCap+600/25948554.html <div class="xn-content"> <p><span class="legendSpanClass"><location value="LU/us.ny.nyc" idsrc="xmltag.org" >NEW YORK</location></span>, <span class="legendSpanClass"><chron>Feb. 4, 2026</chron></span> /PRNewswire/ -- <span value="ACORN:1069625368" idsrc="xmltag.org" >S&amp;P Dow Jones Indices</span> will make the following changes to the S&amp;P 500, S&amp;P MidCap 400, S&amp;P SmallCap 600: </p> <ul type="disc"><li>S&amp;P MidCap 400 constituent <span value="NYSE:CIEN" idsrc="xmltag.org" >Ciena Corp.</span> (NYSE: CIEN) will replace <span value="NYSE:DAY" idsrc="xmltag.org" >Dayforce Inc.</span> (NYSE: DAY) in the S&amp;P 500, S&amp;P SmallCap 600 constituent <span value="NASDAQ-NMS:ARWR" idsrc="xmltag.org" >Arrowhead Pharmaceuticals Inc.</span> (<span>NASD</span>: ARWR) will replace Ciena in the S&amp;P MidCap 400, and <span value="NYSE:ADT" idsrc="xmltag.org" >ADT Inc.</span> (NYSE: ADT) will replace <span value="NASDAQ-NMS:ARWR" idsrc="xmltag.org" >Arrowhead Pharmaceuticals</span> in the S&amp;P SmallCap 600 effective prior http://www.streetinsider.com/PRNewswire/Ciena+Set+to+Join+S%26amp%3BP+500%3B+Arrowhead+Pharmaceuticals+to+Join+S%26amp%3BP+MidCap+400%3B+ADT+and+OneSpaWorld+Holdings+to+Join+S%26amp%3BP+SmallCap+600/25948554.html Wed, 04 Feb 2026 18:15:00 -0500 A.10696253 A.16214043 A.24194066 ADT ARWR CIEN DAY DVAX O.00173595 O.00641174 O.01522756 O.03712323 O.06070974 O.17262886 O.20250683 O.37300900 O.40949211 O.40956674 OSW SPGI