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, Q2 2025
Institutional positions in Cardio Diagnostics Holdings, Inc. as of Jun 30, 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
- −7 vs. Q1 2025
- Shares held
- 84.8K
- +273.53 (+0.3%) vs. Q1 2025Converted for a 1-for-30 split
- Total value
- $305.0K
- −$531.3K (−63.5%) vs. Q1 2025
- New holders
- 4
- 4 more added
- Sold out
- 11
- 5 more reduced
Compare with Q1 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 | $305.0K |
| 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, Q2 2025
Shares, value and share of portfolio for each institution holding Cardio Diagnostics Holdings, Inc.; share changes are against Q1 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| CWM, LLC | 116 | $0 | 0.00% | 00.0% | UnchangedConverted for a 1-for-30 split |
| FMR LLC | 3 | $11 | 0.00% | +3 | New |
| SRS Capital Advisors, Inc. | 6 | $22 | 0.00% | +6 | New |
| Bank of America Corp | 15 | $54 | 0.00% | +5+44.2% | AddedConverted for a 1-for-30 split |
| SBI Securities Co., Ltd. | 70 | $252 | 0.00% | +9+15.3% | AddedConverted for a 1-for-30 split |
| Tower Research Capital LLC (TRC) | 100 | $360 | 0.00% | −505−83.5% | ReducedConverted for a 1-for-30 split |
| Morgan Stanley | 100 | $360 | 0.00% | −50−33.3% | ReducedConverted for a 1-for-30 split |
| Wolverine Asset Management LLC | 104 | $374 | 0.00% | −1−1.0% | ReducedConverted for a 1-for-30 split |
| Advisor Group Holdings, Inc. | 107 | $383 | 0.00% | −96−47.4% | ReducedConverted for a 1-for-30 split |
| UBS Group AG | 697 | $2.51K | 0.00% | −4,874−87.5% | ReducedConverted for a 1-for-30 split |
| The PNC Financial Services Group, Inc. | 1,350 | $4.86K | 0.00% | 00.0% | UnchangedConverted for a 1-for-30 split |
| Royal Bank of Canada | 7,500 | $27.0K | 0.00% | +7,500 | New |
| Vanguard Group Inc | 12,682 | $45.7K | 0.00% | +265+2.1% | AddedConverted for a 1-for-30 split |
| Susquehanna International Group, LLP | 13,060 | $47.0K | 0.00% | +13,060 | New |
| Geode Capital Management, LLC | 13,365 | $48.1K | 0.00% | +198+1.5% | AddedConverted for a 1-for-30 split |
| BlackRock, Inc. | 35,567 | $128.0K | 0.00% | 00.0% | UnchangedConverted for a 1-for-30 split |
| Jane Street Group, LLC | 0 | $0 | 0.00% | −2,694−100.0% | Sold outConverted for a 1-for-30 split |
| State Street Corp | 0 | $0 | 0.00% | −2,087−100.0% | Sold outConverted for a 1-for-30 split |
| XTX Topco Ltd | 0 | $0 | 0.00% | −1,912−100.0% | Sold outConverted for a 1-for-30 split |
| Mariner, LLC | 0 | $0 | 0.00% | −1,667−100.0% | Sold outConverted for a 1-for-30 split |
| Northern Trust Corp | 0 | $0 | 0.00% | −1,621−100.0% | Sold outConverted for a 1-for-30 split |
| HRT Financial LP | 0 | $0 | 0.00% | −1,488−100.0% | Sold outConverted for a 1-for-30 split |
| Two Sigma Securities, LLC | 0 | $0 | 0.00% | −1,408−100.0% | Sold outConverted for a 1-for-30 split |
| Integrated Wealth Concepts LLC | 0 | $0 | 0.00% | −1,333−100.0% | Sold outConverted for a 1-for-30 split |
| LPL Financial LLC | 0 | $0 | 0.00% | −507−100.0% | Sold outConverted for a 1-for-30 split |
| Endowment Wealth Management, Inc. | 0 | $0 | 0.00% | −477−100.0% | Sold outConverted for a 1-for-30 split |
| JPMorgan Chase & Co | 0 | $0 | 0.00% | −50−100.0% | Sold outConverted for a 1-for-30 split |