Cardio Diagnostics HoldingsCDIO
13F holders, Q1 2026 (March 31)16holders
4new positions
5sold out
1famous investor
$1.95avg. 13F price*
At the end of Q1 2026, 16 institutions reported holding Cardio Diagnostics Holdings (CDIO) in their 13F filings, unchanged from Q4 2025. 4 opened new positions and 5 sold out. The largest holders were Jane Street Group, LLC ($159K), HRT Financial LP ($121K) and BlackRock, Inc. ($68K). One famous investor held it Jim Simons / Peter Brown (0.0% of Renaissance Technologies's portfolio).
- Company
- Cardio Diagnostics Holdings
- CUSIP
- 14159C202
- Latest filing quarter
- Q2 2026
History
Number of 13F holders
Total Exit/New Position Q4 2025 → Q1 2026
| Institutions | Total Value | |
|---|---|---|
| New Positions | 4 | $336K |
| Exits | 5 | $143K |
All 13F filers, Q4 2025 → Q1 2026: 200,417 shares bought and 53,593 shares sold, net +146,824 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 16 holders
| Jane Street Group, LLC | 0.00% | New | 81,283 | $159K |
| HRT Financial LP | 0.00% | New | 62,482 | $121K |
| BlackRock, Inc. | 0.00% | Reduce -2.4% | 34,708 | $68K |
| Geode Capital Management, LLC | 0.00% | Add +112.6% | 32,177 | $63K |
| Vanguard Capital Management LLC | 0.00% | — | 20,155 | $39K |
| Renaissance Technologies | 0.00% | New | 15,348 | $30K |
| Scientech Research LLC | 0.02% | New | 13,880 | $27K |
| UBS Group AG | 0.00% | Add +941.9% | 9,919 | $19K |
| Vanguard Fiduciary Trust Co. | 0.00% | — | 3,969 | $8K |
| Tower Research Capital LLC (TRC) | 0.00% | Add +182.1% | 2,192 | $4K |
| Wolverine Asset Management LLC | 0.00% | No change | 104 | $203 |
| Morgan Stanley | 0.00% | No change | 100 | $195 |
| Osaic Holdings, Inc. | 0.00% | No change | 16 | $31 |
| SHP Wealth Management | 0.00% | No change | 16 | $31 |
| SBI Securities Co., Ltd. | 0.00% | Reduce -61.5% | 10 | $20 |
| Citigroup Inc. | 0.00% | Reduce -96.2% | 1 | $2 |
"% of holder's portfolio" is CDIO's weight in each manager's 13F, not the share of Cardio Diagnostics Holdings the manager owns.