Cardio Diagnostics HoldingsCDIO
13F holders, Q4 2025 (December 31)16holders +2
2new positions
1sold out
1famous investor
$2.71avg. 13F price*
At the end of Q4 2025, 16 institutions reported holding Cardio Diagnostics Holdings (CDIO) in their 13F filings, up 2 from Q3 2025. 2 opened new positions and 1 sold out. The largest holders were DRW Securities, LLC ($110K), BlackRock, Inc. ($96K) and Vanguard Group Inc. ($65K). One famous investor held it Ken Griffin (0.0% of Citadel Advisors's portfolio).
- Company
- Cardio Diagnostics Holdings
- CUSIP
- 14159C202
- Latest filing quarter
- Q2 2026
History
Number of 13F holders
Total Exit/New Position Q3 2025 → Q4 2025
| Institutions | Total Value | |
|---|---|---|
| New Positions | 2 | $3K |
| Exits | 1 | $0 |
All 13F filers, Q3 2025 → Q4 2025: 23,314 shares bought and 8,886 shares sold, net +14,428 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 16 holders
| DRW Securities, LLC | 0.01% | Add +122.8% | 40,463 | $110K |
| BlackRock, Inc. | 0.00% | No change | 35,567 | $96K |
| Vanguard Group Inc. | 0.00% | No change | 24,124 | $65K |
| Geode Capital Management, LLC | 0.00% | Add +0.3% | 15,135 | $41K |
| Citadel Advisors | 0.00% | Reduce -44.4% | 10,858 | $29K |
| PNC Financial Services Group, Inc. | 0.00% | No change | 1,350 | $4K |
| UBS Group AG | 0.00% | New | 952 | $3K |
| Tower Research Capital LLC (TRC) | 0.00% | Reduce -1.4% | 777 | $2K |
| Wolverine Asset Management LLC | 0.00% | No change | 104 | $282 |
| Morgan Stanley | 0.00% | Reduce -18.7% | 100 | $271 |
| Citigroup Inc. | 0.00% | New | 26 | $70 |
| SBI Securities Co., Ltd. | 0.00% | Reduce -3.7% | 26 | $70 |
| Bank of America Corp. | 0.00% | Add +6.7% | 16 | $43 |
| Osaic Holdings, Inc. | 0.00% | Reduce -82.0% | 16 | $43 |
| SHP Wealth Management | 0.00% | — | 16 | $43 |
| Arax Advisory Partners | 0.00% | No change | 6 | $17 |
"% of holder's portfolio" is CDIO's weight in each manager's 13F, not the share of Cardio Diagnostics Holdings the manager owns.