Arqit Quantum ARQQ Institutional Ownership

Ownership Summary

Arqit Quantum Inc. (NASDAQ:ARQQ) is held by 55 institutional investors per 13F filings through March 2026.

• Collectively, these holders controlled 9.8% of Arqit Quantum's outstanding shares in March 2026, down from 9.9% in December 2025.
• Their total shares held in ARQQ increased 8.13% quarter over quarter, and separately, investors owning Arqit Quantum increased 66.67% from a year ago.
• Of these 55 funds, 28 grew their exposure to Arqit Quantum, 12 cut back, and 15 maintained positions.
• Institutional investors collectively held 4.02Mn shares in Arqit Quantum as of March 2026, up by 302.19K shares quarter on quarter, and up 3.47Mn shares year over year.
• As of March 31, 2026, Penserra Capital Management LLC held the largest stake in Arqit Quantum with 1.45Mn shares, accounting for 3.54% of total shares outstanding.
• Leading buyers of Arqit Quantum shares for the quarter ending March 2026 were Kessler Investment Group, LLC (109.72K), Penserra Capital Management LLC (73.66K), Defiance ETFs, LLC (73.66K), MILLENNIUM MANAGEMENT LLC (54.03K), RENAISSANCE TECHNOLOGIES LLC (41.4K).
• The largest sales of ARQQ for the quarter ending March 2026 came from UBS Group AG (61.96K), JANE STREET GROUP, LLC (32.58K), NATIONAL BANK OF CANADA /FI/ (29.24K), Legal & General Group Plc (13.6K), Citigroup Inc (9.01K).
• Arqit Quantum's 10 largest shareholders as of March 2026 include Penserra Capital Management LLC (1.45Mn), Defiance ETFs, LLC (1.45Mn), MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. (324.31K), Kessler Investment Group, LLC (157.57K), UBS Group AG (85.44K), Raymond James Financial Inc (63.84K), MILLENNIUM MANAGEMENT LLC (54.03K), Legal & General Group Plc (52.63K), RENAISSANCE TECHNOLOGIES LLC (41.4K), TUDOR INVESTMENT CORP ET AL (38.07K) per Business Quant data.