Arm Holdings Plc /Uk (ARM) Institutional Ownership

Ownership Summary

Recent 13F filings as of December 2025 show that 22 institutional investors hold a position in Arm Holdings Plc /Uk (NASDAQ:ARM).

• The percentage of Arm Holdings owned by institutions changed from 8.7% in September 2025 to 0.0% in December 2025, marking a slight down trend.
• In percentage terms, this reflects as a holdings change of 308.50% quarter on quarter, and a decrease of 96.50% year over year.
• A review of institutional activity for Arm Holdings shows 8 of 22 filers increasing their positions, while 7 reduced their stake, and 7 remained unchanged.
• The aggregate institutional position in Arm Holdings now stands at 345.15K shares as of December 2025, after investors increased their holdings (up by 260.66K shares quarter on quarter which is down 77.29Mn shares year over year).
• With 265.61K shares, SG Americas Securities, LLC commands the largest institutional position in Arm Holdings as of December 31, 2025, equating to 0.02% of the company.
• Among the most significant buyers of Arm Holdings during December 2025 were SG Americas Securities, LLC (246.41K), Capital CS Group, LLC (21.00K), SANDERS MORRIS HARRIS LLC (1.25K), 180 WEALTH ADVISORS, LLC (1.12K), HARBOR INVESTMENT ADVISORY, LLC (150).
• Leading sellers of Arm Holdings stock in December 2025 included Parisi Gray Wealth Management (6.99K), LAKE STREET PRIVATE WEALTH, LLC (1.64K), Harbour Capital Advisors, LLC (469), Union Bancaire Privee, UBP SA (170), GAMMA Investing LLC (54).
• The top 10 institutional holders of Arm Holdings for the quarter ending December 2025 included SG Americas Securities, LLC (265.61K), Capital CS Group, LLC (22.50K), 180 WEALTH ADVISORS, LLC (19.47K), Harbour Capital Advisors, LLC (8.01K), LAKE STREET PRIVATE WEALTH, LLC (5.89K), Gilbert & Cook, Inc. (4.86K), IAM Advisory, LLC (4.60K), SANDERS MORRIS HARRIS LLC (3.67K), Union Bancaire Privee, UBP SA (3.35K), Parisi Gray Wealth Management (2.28K).