Ratings by William Blair (Ryan Merkel)

Date CompanySymbol Type Rating
(Past)
PT
(Past)
Start $
(End $)
% Chg. Details
3/5/2026 Lennox International LII Maintain Outperform
(N/A)
 
 
  Details
3/4/2026 Latham Group Inc. SWIM Maintain Outperform
(N/A)
 
 
  Details
3/2/2026 AAON Inc AAON Maintain Outperform
(N/A)
 
 
  Details
2/26/2026 Builders FirstSource BLDR New Coverage Outperform
(N/A)
102.63
(93.12)
-9.27% Details
12/30/2025 Acuity Brands AYI Maintain Outperform
(N/A)
 
 
  Details
12/30/2025 AAON Inc AAON Maintain Outperform
(N/A)
 
 
  Details
12/10/2025 AAON Inc AAON Maintain Outperform
(N/A)
 
 
  Details
11/5/2025 Trex TREX Downgrade Market Perform
(Outperform)
47.94
(37.54)
-21.69% Details
10/22/2025 Lennox International LII Maintain Outperform
(N/A)
 
 
  Details
10/15/2025 Pool Corp POOL Downgrade Market Perform
(Outperform)
291.73
(213.66)
-26.76% Details
10/15/2025 SiteOne Landscape Supply SITE Downgrade Market Perform
(Outperform)
120.05
(130.88)
9.02% Details
10/15/2025 Watsco WSO Downgrade Market Perform
(Outperform)
364.49
(393.19)
7.87% Details
10/1/2025 Acuity Brands AYI Maintain Outperform
(N/A)
 
 
  Details
9/12/2025 Proficient Auto Logistics PAL Downgrade Market Perform
(Outperform)
7.45
(6.56)
-11.95% Details
8/20/2025 QXO Inc QXO Maintain Outperform
(N/A)
 
 
  Details
8/12/2025 AAON Inc AAON Maintain Outperform
(N/A)
 
 
  Details
6/27/2025 James Hardie Industries JHX New Coverage Outperform
(N/A)
25.77
(21.15)
-17.93% Details
6/26/2025 Acuity Brands AYI Maintain Outperform
(N/A)
 
 
  Details
6/18/2025 QXO Inc QXO New Coverage Outperform
(N/A)
13.71
(13.71)
0% Details
6/10/2025 AAON Inc AAON Maintain Outperform
(N/A)
 
 
  Details
3/24/2025 Azek Co. AZEK Downgrade Market Perform
(Outperform)
41.39
(54.35)
31.31% Details
3/20/2025 Beacon Roofing Supply BECN Downgrade Market Perform
(Outperform)
121.53
(124.17)
2.17% Details
3/10/2025 WW Grainger GWW Upgrade Outperform
(Market Perform)
995.82
(1112.79)
11.75% Details
3/10/2025 Fastenal FAST Upgrade Outperform
(Market Perform)
77.85
(46.46)
-40.32% Details
2/21/2025 AAON Inc AAON Maintain Outperform
(N/A)
 
 
  Details
1/2/2025 Acuity Brands AYI Upgrade Outperform
(Market Perform)
292.13
(275.42)
-5.72% Details
1/2/2025 Karat Packaging Inc KRT Downgrade Market Perform
(Outperform)
30.26
(22.73)
-24.88% Details
1/2/2025 Hillman Solutions Corp. HLMN Downgrade Market Perform
(Outperform)
9.74
(8.14)
-16.43% Details
6/3/2024 Proficient Auto Logistics PAL New Coverage Outperform
(N/A)
15.13
(7.45)
-50.76% Details
4/29/2024 AAON Inc AAON New Coverage Outperform
(N/A)
89.90
(88.33)
-1.75% Details
4/15/2024 Snap One Holdings SNPO Downgrade Market Perform
(Outperform)
8.14
(10.75)
32.06% Details
3/6/2024 Ferguson Plc. FERG Maintain Outperform
(N/A)
 
 
  Details
1/8/2024 Beacon Roofing Supply BECN Upgrade Outperform
(Market Perform)
84.98
(124.17)
46.12% Details
7/14/2023 Leslie's LESL Downgrade Market Perform
(Outperform)
9.52
(0.95)
-90.02% Details
7/12/2023 Lennox International LII Upgrade Outperform
(Market Perform)
327.17
(517.47)
58.17% Details
7/7/2023 Ferguson Plc. FERG New Coverage Outperform
(N/A)
156.28
(230.24)
47.33% Details
7/19/2022 Beacon Roofing Supply BECN Downgrade Market Perform
(Outperform)
55.21
(124.17)
124.9% Details
6/30/2022 MSC Industrial MSM Downgrade Market Perform
(Outperform)
73.56
(91.41)
24.27% Details
6/23/2022 Acuity Brands AYI Downgrade Market Perform
(Outperform)
155.23
(275.42)
77.43% Details
10/13/2021 Beacon Roofing Supply BECN Maintain Outperform
(N/A)
 
 
  Details
9/16/2021 Hayward Holdings Inc HAYW Maintain Outperform
(N/A)
 
 
  Details
8/9/2021 Hillman Solutions Corp. HLMN New Coverage Outperform
(N/A)
12.71
(8.14)
-35.96% Details
7/14/2021 Lennox International LII Downgrade Market Perform
(Outperform)
336.17
(517.47)
53.93% Details
7/14/2021 Beacon Roofing Supply BECN Maintain Outperform
(N/A)
 
 
  Details
5/19/2021 Karat Packaging Inc KRT New Coverage Outperform
(N/A)
17.37
(22.73)
30.86% Details
5/18/2021 Latham Group Inc. SWIM New Coverage Outperform
(N/A)
31.81
(6.30)
-80.19% Details
4/8/2021 MSC Industrial MSM Upgrade Outperform
(Market Perform)
91.64
(91.41)
-0.25% Details
4/6/2021 Hayward Holdings Inc HAYW New Coverage Outperform
(N/A)
17.04
(14.87)
-12.73% Details
3/26/2021 Acuity Brands AYI Upgrade Outperform
(Market Perform)
131.57
(275.42)
109.33% Details
2/24/2021 Systemax SYX Downgrade Market Perform
(Outperform)
44.41
(35.16)
-20.83% Details
11/23/2020 Leslie's LESL New Coverage Outperform
(N/A)
22.00
(0.95)
-95.68% Details
10/6/2020 Beacon Roofing Supply BECN Upgrade Outperform
(Market Perform)
32.16
(124.17)
286.1% Details
7/20/2020 Beacon Roofing Supply BECN Maintain Market Perform
(N/A)
 
 
  Details
6/29/2020 HD Supply Holdings HDS Maintain Market Perform
(N/A)
 
 
  Details
6/3/2020 Allegion ALLE New Coverage Market Perform
(N/A)
100.65
(150.37)
49.4% Details
2/12/2020 WW Grainger GWW Upgrade Outperform
(Market Perform)
298.17
(1112.79)
273.21% Details
2/4/2020 Lennox International LII Maintain Outperform
(N/A)
 
 
  Details
1/14/2020 Trex TREX Maintain Outperform
(N/A)
 
 
  Details
1/8/2020 Trex TREX Maintain Outperform
(N/A)
 
 
  Details
9/26/2019 HD Supply Holdings HDS Downgrade Market Perform
(Outperform)
37.92
(55.99)
47.65% Details
8/22/2019 Trex TREX New Coverage Outperform
()
85.67
(47.94)
-44.04% Details
5/7/2019 Fastenal FAST Downgrade Market Perform
(Outperform)
67.96
(46.46)
-31.64% Details
5/7/2019 MSC Industrial MSM Downgrade Market Perform
(Outperform)
83.97
(91.41)
8.86% Details
5/7/2019 WESCO International WCC Downgrade Market Perform
(Outperform)
57.09
(264.13)
362.66% Details
4/10/2019 Pool Corp POOL Maintain Outperform
(N/A)
 
 
  Details
1/18/2019 LKQ Corp. LKQ Downgrade Market Perform
(Outperform)
26.82
(31.47)
17.34% Details
10/31/2018 Systemax SYX Upgrade Outperform
(Market Perform)
25.82
(35.16)
36.17% Details
10/8/2018 Beacon Roofing Supply BECN Downgrade Market Perform
(Outperform)
33.34
(124.17)
272.44% Details
9/25/2018 Acuity Brands AYI Maintain Market Perform
(N/A)
 
 
  Details
9/25/2018 SiteOne Landscape Supply SITE Maintain Outperform
(Outperform)
 
 
  Details
8/29/2018 Systemax SYX New Coverage Market Perform
(N/A)
36.82
(25.82)
-29.88% Details