Seer, Inc. (SEER) Institutional Ownership

Ownership Summary

Seer, Inc. (NASDAQ:SEER) currently has 59 active institutional owners and shareholders as of today (December 2025), that have filed 13F forms with the Securities Exchange Commission (SEC).

• Institutional ownership in Seer edged down to 42.5% in December 2025, compared to 45.5% in September 2025.
• The company experienced a 0.73% quarterly change in institutional shares held, alongside a decrease of 16.90% in total owners annually.
• A review of institutional activity for Seer shows 19 of 59 filers increasing their positions, while 26 reduced their stake, and 14 remained unchanged.
• Collectively, institutional investors increased their stake in Seer to 24.19Mn shares as of December 2025, a change that is up by 175.61K shares quarter on quarter and down 5.35Mn shares year over year.
• As of December 31, 2025, SOFTBANK GROUP CORP. held Seer's largest shareholding position with over 5.14Mn shares, representing 9.01% of total outstanding shares.
• Among the most significant buyers of Seer during December 2025 were NANO CAP NEW MILLENNIUM GROWTH FUND L P (825.00K), T3 Companies, LLC (132.00K), Shay Capital LLC (76.76K), Quadrature Capital Ltd (55.31K), BARCLAYS PLC (52.98K).
• Leading sellers of Seer stock in December 2025 included ROYAL BANK OF CANADA (186.32K), D. E. Shaw & Co., Inc. (182.96K), BRIDGEWAY CAPITAL MANAGEMENT, LLC (128.00K), MILLENNIUM MANAGEMENT LLC (108.57K), ACADIAN ASSET MANAGEMENT LLC (103.66K).
• The top 10 institutional holders of Seer for the quarter ending December 2025 included SOFTBANK GROUP CORP. (5.14Mn), Siren, L.L.C. (4.00Mn), VANGUARD GROUP INC (2.19Mn), ACADIAN ASSET MANAGEMENT LLC (2.04Mn), BlackRock, Inc. (1.83Mn), RENAISSANCE TECHNOLOGIES LLC (1.05Mn), NANO CAP NEW MILLENNIUM GROWTH FUND L P (825.00K), AJU IB Investment Co., Ltd. (816.38K), FMR LLC (703.89K), BRIDGEWAY CAPITAL MANAGEMENT, LLC (609.44K).