IspecimenISPC
13F holders, Q1 2026 (March 31)11holders
2new positions
3sold out
1famous investor
$0.16avg. 13F price*
At the end of Q1 2026, 11 institutions reported holding Ispecimen Inc. (ISPC) in their 13F filings, unchanged from Q4 2025. 2 opened new positions and 3 sold out. The largest holders were Geode Capital Management, LLC ($49K), Jane Street Group, LLC ($9K) and UBS Group AG ($8K). One famous investor held it Ken Griffin (0.0% of Citadel Advisors's portfolio).
- Company
- Ispecimen Inc.
- CUSIP
- 45032V207
- Latest filing quarter
- Q2 2026
History
Number of 13F holders
Total Exit/New Position Q4 2025 → Q1 2026
| Institutions | Total Value | |
|---|---|---|
| New Positions | 2 | $11K |
| Exits | 3 | $7K |
All 13F filers, Q4 2025 → Q1 2026: 430,537 shares bought and 25,632 shares sold, net +404,905 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 11 holders
| Geode Capital Management, LLC | 0.00% | Add +652.8% | 313,098 | $49K |
| Jane Street Group, LLC | 0.00% | Add +294.7% | 55,631 | $9K |
| UBS Group AG | 0.00% | Add +733.9% | 53,744 | $8K |
| Citadel Advisors | 0.00% | New | 50,471 | $8K |
| Vanguard Fiduciary Trust Co. | 0.00% | — | 28,170 | $4K |
| StoneX Group Inc. | 0.00% | New | 19,710 | $3K |
| Tower Research Capital LLC (TRC) | 0.00% | Reduce -0.2% | 6,651 | $1K |
| BlackRock, Inc. | 0.00% | No change | 2,827 | $444 |
| Vanguard Capital Management LLC | 0.00% | — | 1,237 | $194 |
| SBI Securities Co., Ltd. | 0.00% | Add +375.0% | 19 | $3 |
| Sachetta, LLC | 0.00% | No change | 2 | $1 |
"% of holder's portfolio" is ISPC's weight in each manager's 13F, not the share of Ispecimen Inc. the manager owns.