Seer Institutional Ownership

Updated Oct 11, 2026

Seer, Inc. (NASDAQ:SEER) was held by 59 institutional investors that filed 13F reports for the quarter ended June 30, 2026.

• These investors held 37.18% of outstanding shares in Q2 2026, down from 37.97% the quarter before.
• Total shares held in SEER fell 3.52% versus Q1 2026, while the number of holders fell 9.23% versus Q2 2025.
• Among the 59 holders of SEER, 23 added to their positions, 20 reduced their stakes and 16 left their positions unchanged.
• Combined, institutional investors held 20.51Mn shares of SEER as of Q2 2026, down 749.03K from the prior quarter and down 6.57Mn from a year earlier.
• Softbank Group Corp. was the top holder of SEER as of June 30, 2026, with 5.14Mn shares, or 9.31% of shares outstanding.
• The biggest increases in SEER positions during Q2 2026 came from Advisory Services Network, LLC (+132.65K shares), Edgewood Management LLC (+100K shares), Jacobs Levy Equity Management, Inc (+79.09K shares), Goldman Sachs Group Inc (+52.47K shares) and Rangeley Capital, LLC (+37.7K shares).
• The largest position reductions in SEER for Q2 2026 were by BlackRock, Inc. (-393.2K shares), Vanguard Capital Management LLC (-127.94K shares), Acadian Asset Management LLC (-121K shares), Northern Trust Corp (-55.66K shares) and Shay Capital LLC (-41.28K shares).
• SEER's 10 largest institutional shareholders as of Q2 2026 were Softbank Group Corp. (5.14Mn shares), Siren, L.L.C. (2.46Mn shares), Acadian Asset Management LLC (1.95Mn shares), Vanguard Capital Management LLC (1.83Mn shares), BlackRock, Inc. (1.43Mn shares), Renaissance Technologies LLC (985.5K shares), Nano Cap New Millennium Growth Fund L.P. (825K shares), Citadel Advisors LLC (519.31K shares), Two Sigma Investments, LP (492.3K shares) and Geode Capital Management, LLC (460.43K shares), per Business Quant data.