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
13F holders, Q4 2025
Institutional positions in Cardio Diagnostics Holdings, Inc. as of Dec 31, 2025. 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
- 16
- +2 vs. Q3 2025
- Shares held
- 129.5K
- +14.4K (+12.5%) vs. Q3 2025
- Total value
- $351.0K
- −$111.2K (−24.1%) vs. Q3 2025
- New holders
- 3
- 3 more added
- Sold out
- 1
- 5 more reduced
Compare with Q3 2025: new holders, sold out and not filed yet
Holders and value by quarter
Institutions reporting CDIO 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 | 17 | $422.7K |
| Q1 2026 | 16 | $538.1K |
| Q4 2025 | 16 | $351.0K |
| Q3 2025 | 14 | $462.2K |
| Q2 2025 | 16 | $332.0K |
| Q1 2025 | 23 | $836.3K |
| Q4 2024 | 23 | $2.36M |
| Q3 2024 | 15 | $373.7K |
| Q2 2024 | 16 | $996.1K |
| Q1 2024 | 14 | $2.30M |
| Q4 2023 | 14 | $4.12M |
| Q3 2023 | 15 | $152.4K |
| Q2 2023 | 10 | $445.3K |
| Q1 2023 | 11 | $1.31M |
| Q4 2022 | 12 | $248.8K |
| 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 2025
Shares, value and share of portfolio for each institution holding Cardio Diagnostics Holdings, Inc.; share changes are against Q3 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| DRW Securities, LLC | 40,463 | $109.7K | 0.01% | +22,298+122.8% | Added |
| BlackRock, Inc. | 35,567 | $96.4K | 0.00% | 00.0% | Unchanged |
| Vanguard Group Inc | 24,124 | $65.4K | 0.00% | 00.0% | Unchanged |
| Geode Capital Management, LLC | 15,135 | $41.0K | 0.00% | +37+0.2% | Added |
| Citadel Advisors LLC | 10,858 | $29.4K | 0.00% | −8,662−44.4% | Reduced |
| The PNC Financial Services Group, Inc. | 1,350 | $3.66K | 0.00% | 00.0% | Unchanged |
| UBS Group AG | 952 | $2.58K | 0.00% | +952 | New |
| Tower Research Capital LLC (TRC) | 777 | $2.11K | 0.00% | −11−1.4% | Reduced |
| Wolverine Asset Management LLC | 104 | $282 | 0.00% | 00.0% | Unchanged |
| Morgan Stanley | 100 | $271 | 0.00% | −23−18.7% | Reduced |
| SBI Securities Co., Ltd. | 26 | $70 | 0.00% | −1−3.7% | Reduced |
| Citigroup Inc | 26 | $70 | 0.00% | +26 | New |
| Advisor Group Holdings, Inc. | 16 | $43 | 0.00% | −73−82.0% | Reduced |
| Bank of America Corp | 16 | $43 | 0.00% | +1+6.7% | Added |
| SHP Wealth Management | 16 | $43 | 0.00% | +16 | New |
| SRS Capital Advisors, Inc. | 6 | $17 | 0.00% | 00.0% | Unchanged |
| CWM, LLC | 0 | $0 | 0.00% | −116−100.0% | Sold out |