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Arqit Quantum (ARQQ)

16.29 -3.76 (18.75%)

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- Earnings (8/28/25 *Est.)

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Form SCHEDULE 13G/A Arqit Quantum Inc. Filed by: Notion Capital III LP September 10, 2026 12:39 PM - SEC Filing The Quantum Deadline Moved Up. Most Firms Cannot Find Their Own Keys. September 10, 2026 10:28 AM - Globe NewsWire A Deadline No One Can Negotiate Is Coming for the World's Encryption, and the Race to Get Ready Has Quietly Begun August 28, 2026 12:45 PM - Globe NewsWire A Deadline No One Can Negotiate Is Coming for the World's Encryption, and the Race to Get Ready Has Quietly Begun August 28, 2026 12:45 PM - StreetInsider Form 6-K Arqit Quantum Inc. For: Aug 19 August 19, 2026 4:01 PM - SEC Filing A $19 Billion Trust Layer Is Being Rebuilt for the Quantum Age. QSE Just Got a Seat at the Table August 4, 2026 9:00 AM - StreetInsider Form 4 Arqit Quantum Inc. For: Jul 17 Filed by: Calabria Carlo July 21, 2026 2:16 PM - SEC Filing Form 4 Arqit Quantum Inc. For: Jul 17 Filed by: Lefebvre d'Ovidio Manfredi July 21, 2026 2:10 PM - SEC Filing Form 4 Arqit Quantum Inc. For: Jul 17 Filed by: Ritchie Garth July 21, 2026 2:09 PM - SEC Filing Form 4 Arqit Quantum Inc. For: Jul 15 Filed by: Calabria Carlo July 17, 2026 6:24 PM - SEC Filing Form 4 Arqit Quantum Inc. For: Jul 15 Filed by: Ritchie Garth July 17, 2026 6:22 PM - SEC Filing Form 4 Arqit Quantum Inc. For: Jul 15 Filed by: Lefebvre d'Ovidio Manfredi July 17, 2026 6:21 PM - SEC Filing Form 4 Arqit Quantum Inc. For: Jul 09 Filed by: Lefebvre d'Ovidio Manfredi July 13, 2026 4:06 PM - SEC Filing Form 4 Arqit Quantum Inc. For: Jul 07 Filed by: Lefebvre d'Ovidio Manfredi July 9, 2026 4:05 PM - SEC Filing Form 4 Arqit Quantum Inc. For: Jul 02 Filed by: Lefebvre d'Ovidio Manfredi July 7, 2026 4:27 PM - SEC Filing Form 4 Arqit Quantum Inc. For: Jul 01 Filed by: Lefebvre d'Ovidio Manfredi July 6, 2026 6:34 PM - SEC Filing Form 4 Arqit Quantum Inc. For: Jul 01 Filed by: Calabria Carlo July 6, 2026 6:10 PM - SEC Filing Form 4 Arqit Quantum Inc. For: Jul 01 Filed by: Willcocks Patrick July 6, 2026 5:47 PM - SEC Filing Form 4 Arqit Quantum Inc. For: Jul 01 Filed by: Ritchie Garth July 6, 2026 5:19 PM - SEC Filing Form 4 Arqit Quantum Inc. For: Jul 01 Filed by: Leaver Andrew July 6, 2026 5:14 PM - SEC Filing Form 4 Arqit Quantum Inc. For: Jul 01 Filed by: Wilder Ben Simon July 6, 2026 4:12 PM - SEC Filing Form 4 Arqit Quantum Inc. For: Jul 01 Filed by: Feenan Paul July 6, 2026 3:25 PM - SEC Filing Form 144 Arqit Quantum Inc. Filed by: Ritchie Garth July 2, 2026 5:09 PM - SEC Filing Form 144 Arqit Quantum Inc. Filed by: Willcocks Patrick July 2, 2026 5:02 PM - SEC Filing Form 144 Arqit Quantum Inc. Filed by: Feenan Paul July 2, 2026 4:58 PM - SEC Filing Form 144 Arqit Quantum Inc. Filed by: Leaver Andrew July 2, 2026 4:53 PM - SEC Filing Form 4 Arqit Quantum Inc. For: Jun 30 Filed by: Lefebvre d'Ovidio Manfredi July 2, 2026 4:51 PM - SEC Filing Form 144 Arqit Quantum Inc. Filed by: Wilder Ben Simon July 2, 2026 4:46 PM - SEC Filing Form 4 Arqit Quantum Inc. For: Jun 30 Filed by: Willcocks Patrick July 2, 2026 11:16 AM - SEC Filing Form 4 Arqit Quantum Inc. For: Jun 26 Filed by: Lefebvre d'Ovidio Manfredi June 30, 2026 4:05 PM - SEC Filing Form 144 Arqit Quantum Inc. Filed by: Willcocks Patrick June 30, 2026 3:01 PM - SEC Filing Form 144 Arqit Quantum Inc. Filed by: Pointon Nicholas June 30, 2026 12:01 PM - SEC Filing Form 4 Arqit Quantum Inc. For: Jun 24 Filed by: Lefebvre d'Ovidio Manfredi June 26, 2026 4:05 PM - SEC Filing Form 4 Arqit Quantum Inc. For: Jun 22 Filed by: Bers Jennifer June 24, 2026 4:27 PM - SEC Filing Form 4 Arqit Quantum Inc. For: Jun 22 Filed by: Lefebvre d'Ovidio Manfredi June 24, 2026 4:05 PM - SEC Filing Form SCHEDULE 13G Arqit Quantum Inc. Filed by: ICS OPPORTUNITIES, LTD. June 23, 2026 6:15 PM - SEC Filing Form 4 Arqit Quantum Inc. For: Apr 01 Filed by: Russell Robert Michael June 22, 2026 5:48 PM - SEC Filing Form 4 Arqit Quantum Inc. For: Apr 01 Filed by: Bers Jennifer June 22, 2026 4:20 PM - SEC Filing Form 4 Arqit Quantum Inc. For: Jun 17 Filed by: Lefebvre d'Ovidio Manfredi June 22, 2026 4:05 PM - SEC Filing Form 4 Arqit Quantum Inc. For: Jun 15 Filed by: Lefebvre d'Ovidio Manfredi June 17, 2026 4:05 PM - SEC Filing Form 144 Arqit Quantum Inc. Filed by: Pointon Nicholas June 17, 2026 3:15 PM - SEC Filing The Quiet Race to Rewire the World's Encryption Before Quantum Computers Break It June 17, 2026 8:45 AM - PR NewsWire Form 6-K Arqit Quantum Inc. For: Jun 17 June 17, 2026 7:15 AM - SEC Filing Full Article List