Seer, Inc. (SEER) Institutional Ownership

Ownership Summary

Seer, Inc. (NASDAQ:SEER) showed up in the 13F filings of 62 institutional investors as of December 2025.

• Their combined ownership stood at 43.4% of outstanding shares in December 2025, down from 46.1% in September 2025.
• They increased total shares held in Seer by 0.77% from the prior quarter, while the number of investors in SEER decreased 12.68% year over year.
• Of these 62 funds, 20 grew their exposure to Seer, 29 cut back, and 13 maintained positions.
• In total, institutional investors held 24.46Mn shares in Seer as of December 2025, up by 185.72K shares quarter on quarter, and down 5.69Mn shares year over year.
• SOFTBANK GROUP CORP. holds the largest position in SEER at 5.14Mn shares as of December 31, 2025, or 9.12% of shares outstanding.
• The largest buyers of Seer for the quarter ending December 2025 were NANO CAP NEW MILLENNIUM GROWTH FUND L P (825.0K), T3 Companies, LLC (132.0K), Corient Private Wealth LLC (126.4K), Shay Capital LLC (76.76K), Quadrature Capital Ltd (55.31K).
• The largest sellers of Seer for the quarter ending December 2025 were Royal Bank Of Canada (186.32K), D. E. Shaw & Co., Inc. (182.96K), BRIDGEWAY CAPITAL MANAGEMENT, LLC (128.0K), MILLENNIUM MANAGEMENT LLC (108.57K), ACADIAN ASSET MANAGEMENT LLC (103.66K).
• According to Business Quant data, leading holders of SEER for December 2025 are SOFTBANK GROUP CORP. (5.14Mn), Siren, L.L.C. (4.0Mn), 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 (825.0K), AJU IB Investment Co., Ltd. (816.38K), FMR LLC (703.89K), BRIDGEWAY CAPITAL MANAGEMENT, LLC (609.44K).