Cardio Diagnostics Holdings, Inc.
CDIOW- 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; 7 institutions reported holding it in 13F filings for Q2 2026, worth $139.7K in total; no superinvestor holds it.
Other share classesCDIO
13F holders, Q4 2022
Institutional positions in Cardio Diagnostics Holdings, Inc. as of Dec 31, 2022. Investment managers with $100 million or more in US stocks report their long positions on Form 13F within 45 days after each quarter ends. How 13F works
- Institutional holders
- 21
- +21 vs. Q3 2022
- Shares held
- 1.53M
- +1.53M vs. Q3 2022
- Total value
- $66.9K
- +$66.9K vs. Q3 2022
- New holders
- 21
- 0 more added
- Sold out
- 0
- 0 more reduced
Compare with Q3 2022: new holders, sold out and not filed yet
Holders and value by quarter
Institutions reporting CDIOW on Form 13F each quarter since Q1 2021, and the total value they reported. Values are as of each quarter end, so they also move with the share price.
| Quarter | Holders | Value |
|---|---|---|
| Q2 2026 | 7 | $139.7K |
| Q1 2026 | 7 | $126.1K |
| Q4 2025 | 6 | $175.1K |
| Q3 2025 | 10 | $254.3K |
| Q2 2025 | 10 | $225.9K |
| Q1 2025 | 7 | $39.6K |
| Q4 2024 | 6 | $96.7K |
| Q3 2024 | 10 | $34.6K |
| Q2 2024 | 9 | $65.5K |
| Q1 2024 | 12 | $118.6K |
| Q4 2023 | 13 | $201.7K |
| Q3 2023 | 13 | $45.4K |
| Q2 2023 | 13 | $222.7K |
| Q1 2023 | 16 | $400.2K |
| Q4 2022 | 21 | $66.9K |
| Q3 2022 | 0 | $0 |
| Q2 2022 | 0 | $0 |
| Q1 2022 | 0 | $0 |
| Q4 2021 | 0 | $0 |
| Q3 2021 | 0 | $0 |
| Q2 2021 | 0 | $0 |
| Q1 2021 | 0 | $0 |
Institutions, Q4 2022
Shares, value and share of portfolio for each institution holding Cardio Diagnostics Holdings, Inc.; share changes are against Q3 2022.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| UBS Group AG | 52 | $3 | 0.00% | +52 | New |
| Castle Creek Arbitrage, LLC | 11,710 | $564 | 0.00% | +11,710 | New |
| Susquehanna International Group, LLP | 12,483 | $618 | 0.00% | +12,483 | New |
| HRT Financial LP | 36,200 | $1.00K | 0.00% | +36,200 | New |
| Gabelli & Co Investment Advisers, Inc. | 22,410 | $1.11K | 0.00% | +22,410 | New |
| Walleye Trading LLC | 24,139 | $1.20K | 0.00% | +24,139 | New |
| Gabelli Funds LLC | 26,290 | $1.30K | 0.00% | +26,290 | New |
| Wolverine Asset Management LLC | 29,959 | $1.48K | 0.00% | +29,959 | New |
| Shaolin Capital Management LLC | 47,000 | $2.00K | 0.00% | +47,000 | New |
| Walleye Capital LLC | 42,915 | $2.12K | 0.00% | +42,915 | New |
| CNH Partners LLC | 46,442 | $2.30K | 0.00% | +46,442 | New |
| Rivernorth Capital Management, LLC | 49,999 | $2.50K | 0.00% | +49,999 | New |
| Yakira Capital Management, Inc. | 69,499 | $3.44K | 0.00% | +69,499 | New |
| D. E. Shaw & Co., Inc. | 74,822 | $3.70K | 0.00% | +74,822 | New |
| Polar Asset Management Partners Inc. | 89,943 | $4.33K | 0.00% | +89,943 | New |
| K2 Principal Fund, L.P. | 92,500 | $4.58K | 0.00% | +92,500 | New |
| Atw Spac Management LLC | 100,000 | $4.95K | 0.00% | +100,000 | New |
| Saba Capital Management, L.P. | 235,597 | $11.7K | 0.00% | +235,597 | New |
| EHP Funds Inc. | 364,492 | $18.0K | 0.00% | +364,492 | New |
| Radcliffe Capital Management, L.P. | 50,000 | – | – | +50,000 | New |
| Boothbay Fund Management, LLC | 100,000 | – | – | +100,000 | New |