Cardio Diagnostics Holdings, Inc. (CDIO) ownership: insiders 10% · institutions 14% (13F 2026-03-31). Insider activity, 90 days: 0 sales, 0 open-market buys. SEC EDGAR first-party data.
| Holder | Shares | Market Value | % Outstanding | Reported |
|---|---|---|---|---|
| Jane Street | 81283.00 | $158502.00 | 2.7% | 2026-03-31 |
| Hudson Bay / HRT | 62482.00 | $121000.00 | 2.1% | 2026-03-31 |
| BlackRock | 34708.00 | $67681.00 | 1.2% | 2026-03-31 |
| Geode Capital Management | 32177.00 | $62744.00 | 1.1% | 2026-03-31 |
| Vanguard | 24124.00 | $47042.00 | 0.8% | 2026-03-31 |
| Renaissance Technologies | 15348.00 | $29929.00 | 0.5% | 2026-03-31 |
| Citadel | 10858.00 | $29425.00 | 0.4% | 2026-03-31 |
| Scientech Research LLC | 13880.00 | $27066.00 | 0.5% | 2026-03-31 |
| Insider | Transaction | Value | Date |
|---|---|---|---|
| Sell | null | 2026-06-30 | |
| Sell | null | 2026-06-30 | |
| Sell | null | 2026-06-30 | |
| Sell | null | 2026-06-30 | |
| Sell | null | 2026-03-31 | |
| Sell | null | 2026-03-31 | |
| Sell | null | 2026-03-31 | |
| Sell | null | 2026-03-31 |
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Institutional data from SEC Form 13F. Insider data from SEC Form 4. Congressional data from STOCK Act disclosures. Not personalized investment advice.