iSpecimen Inc. (ISPC) Institutional Ownership

Ownership Summary

iSpecimen Inc. (NASDAQ:ISPC) is held by 11 institutional investors per 13F filings through December 2025.

• Collectively, these holders controlled 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% from the prior quarter, while the number of investors in iSpecimen increased 37.5% year over year.
• Activity in ISPC broke down as 4 buyers, 3 sellers, and 4 unchanged among 11 total holders.
• In total, institutional investors held 126.66K shares in iSpecimen as of December 2025, up by 30.02K shares quarter on quarter, and up 90.91K shares year over year.
• GEODE CAPITAL MANAGEMENT, LLC leads ownership in ISPC with 41.59K shares as of December 31, 2025, equal to 0.71% of outstanding shares.
• The biggest buyers of iSpecimen for the quarter ending December 2025 included SUSQUEHANNA INTERNATIONAL GROUP, LLP (15.06K), Jump Financial, LLC (10.47K), UBS Group AG (6.44K), Tower Research Capital LLC (TRC) (4.31K).
• The largest sellers of iSpecimen for the quarter ending December 2025 were JANE STREET GROUP, LLC (6.16K), GEODE CAPITAL MANAGEMENT, LLC (96), Bank Of America Corp /De/ (7).
• Business Quant data shows the 10 biggest positions in iSpecimen as of December 2025 are held by GEODE CAPITAL MANAGEMENT, LLC (41.59K), VANGUARD GROUP INC (29.41K), SUSQUEHANNA INTERNATIONAL GROUP, LLP (15.06K), JANE STREET GROUP, LLC (14.09K), Jump Financial, LLC (10.47K), Tower Research Capital LLC (TRC) (6.66K), UBS Group AG (6.44K), BlackRock, Inc. (2.83K), Bank Of America Corp /De/ (83), SBI Securities Co., Ltd. (4).