iSpecimen Inc. (ISPC) Institutional Ownership

Ownership Summary

iSpecimen Inc. (NASDAQ:ISPC) appears in 11 institutional 13F filings for the quarter ending December 2025.

• These investors collectively held 2.2% of iSpecimen's outstanding shares in December 2025, down from 5.9% in September 2025.
• Their total shares held in ISPC increased 31.07% quarter over quarter, and separately, investors owning iSpecimen increased 37.5% from a year ago.
• Of these 11 holders, 4 added to their stakes in iSpecimen, 3 trimmed positions, and 4 made no changes.
• Altogether, these fund groups held 126.66K shares in ISPC by December 2025, up by 30.02K shares quarter on quarter, and up 90.91K shares year over year.
• As of December 31, 2025, the biggest holder of iSpecimen is GEODE CAPITAL MANAGEMENT, LLC at 7.83K shares, representing 0.13% of shares outstanding.
• The biggest buyers of iSpecimen for the quarter ending December 2025 included GEODE CAPITAL MANAGEMENT, LLC (6.79K), CITADEL ADVISORS LLC (1.26K), UBS Group AG (1.18K), JANE STREET GROUP, LLC (1.04K), VANGUARD FIDUCIARY TRUST CO (704).
• The largest sellers of iSpecimen for the quarter ending December 2025 were Tower Research Capital LLC (TRC) (0).
• Per Business Quant data, the top 10 holders of iSpecimen for the quarter ending December 2025 are GEODE CAPITAL MANAGEMENT, LLC (7.83K), JANE STREET GROUP, LLC (1.39K), UBS Group AG (1.34K), CITADEL ADVISORS LLC (1.26K), VANGUARD FIDUCIARY TRUST CO (704), StoneX Group Inc. (492), Tower Research Capital LLC (TRC) (166), BlackRock, Inc. (70), VANGUARD CAPITAL MANAGEMENT LLC (30), SBI Securities Co., Ltd. (0).