Cardio Diagnostics Holdings, Inc.
CDIO- Exchange
- Nasdaq
- Industry
- In Vitro & In Vivo Diagnostic Substances
- SEC CIK
- 0001870144
No open-market purchases or sales by Cardio Diagnostics Holdings, Inc. insiders were filed in the last 90 days; 17 institutions reported holding it in 13F filings for Q2 2026, worth $422.7K in total; no superinvestor holds it.
Other share classesCDIOW
Q1 2026 vs. Q4 2025
How the institutions holding Cardio Diagnostics Holdings, Inc. changed between Q4 2025 and Q1 2026.
All holders in Q1 2026All holders in Q4 2025
| Measure | Q4 2025 | Of which not filed for Q1 2026 | Q1 2026 | Change |
|---|---|---|---|---|
| Holders | 16 | 1 | 16 | +1 |
| Shares | 129.5K | 24.1K | 276.4K | +170.9K (+162.2%) |
| Value | $351.0K | $65.4K | $538.1K | +$252.4K (+88.4%) |
1 institution that held it in Q4 2025 haven't filed for Q1 2026 yet. Not filing isn't selling, so the changes leave them out.
New holders (6)
Institutions that held Cardio Diagnostics Holdings, Inc. at the end of Q1 2026 but not at the end of Q4 2025.
| Institution | Shares | Value | % of portfolio |
|---|---|---|---|
| Jane Street Group, LLC | 81,283 | $158.5K | 0.00% |
| HRT Financial LP | 62,482 | $121.0K | 0.00% |
| Vanguard Capital Management LLC | 20,155 | $39.3K | 0.00% |
| Renaissance Technologies LLC | 15,348 | $29.9K | 0.00% |
| Scientech Research LLC | 13,880 | $27.1K | 0.02% |
| Vanguard Fiduciary Trust Co | 3,969 | $7.74K | 0.00% |
Sold out (5)
Institutions that held Cardio Diagnostics Holdings, Inc. at the end of Q4 2025 and filed for Q1 2026 without it.
| Institution | Shares, Q4 2025 | Value, Q4 2025 |
|---|---|---|
| DRW Securities, LLC | 40,463 | $109.7K |
| Citadel Advisors LLC | 10,858 | $29.4K |
| The PNC Financial Services Group, Inc. | 1,350 | $3.66K |
| Bank of America Corp | 16 | $43 |
| SRS Capital Advisors, Inc. | 6 | $17 |
Not filed for Q1 2026 yet (1)
Institutions that held Cardio Diagnostics Holdings, Inc. at the end of Q4 2025 and haven't filed a 13F for Q1 2026. Not filing isn't selling, so they aren't counted as sold out.
| Institution | Shares, Q4 2025 | Value, Q4 2025 |
|---|---|---|
| Vanguard Group Inc | 24,124 | $65.4K |