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
- 92.3K
- −2.44M (−96.4%) vs. Q1 2025
- Total value
- $332.0K
- −$504.3K (−60.3%) vs. Q1 2025
- New holders
- 4
- 0 more added
- Sold out
- 11
- 12 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 | $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, 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 |
|---|---|---|---|---|---|
| BlackRock, Inc. | 35,567 | $128.0K | 0.00% | −1,031,495−96.7% | Reduced |
| Royal Bank of Canada | 15,000 | $54.0K | 0.00% | +15,000 | New |
| Geode Capital Management, LLC | 13,365 | $48.1K | 0.00% | −381,633−96.6% | Reduced |
| Susquehanna International Group, LLP | 13,060 | $47.0K | 0.00% | +13,060 | New |
| Vanguard Group Inc | 12,682 | $45.7K | 0.00% | −359,836−96.6% | Reduced |
| The PNC Financial Services Group, Inc. | 1,350 | $4.86K | 0.00% | −39,150−96.7% | Reduced |
| UBS Group AG | 697 | $2.51K | 0.00% | −166,440−99.6% | Reduced |
| Advisor Group Holdings, Inc. | 107 | $383 | 0.00% | −5,993−98.2% | Reduced |
| Wolverine Asset Management LLC | 104 | $374 | 0.00% | −3,047−96.7% | Reduced |
| Tower Research Capital LLC (TRC) | 100 | $360 | 0.00% | −18,060−99.4% | Reduced |
| Morgan Stanley | 100 | $360 | 0.00% | −4,400−97.8% | Reduced |
| SBI Securities Co., Ltd. | 70 | $252 | 0.00% | −1,751−96.2% | Reduced |
| Bank of America Corp | 15 | $54 | 0.00% | −297−95.2% | Reduced |
| SRS Capital Advisors, Inc. | 6 | $22 | 0.00% | +6 | New |
| FMR LLC | 3 | $11 | 0.00% | +3 | New |
| CWM, LLC | 116 | $0 | 0.00% | −3,367−96.7% | Reduced |
| Jane Street Group, LLC | 0 | $0 | 0.00% | −80,834−100.0% | Sold out |
| State Street Corp | 0 | $0 | 0.00% | −62,600−100.0% | Sold out |
| XTX Topco Ltd | 0 | $0 | 0.00% | −57,372−100.0% | Sold out |
| Mariner, LLC | 0 | $0 | 0.00% | −50,000−100.0% | Sold out |
| Northern Trust Corp | 0 | $0 | 0.00% | −48,619−100.0% | Sold out |
| HRT Financial LP | 0 | $0 | 0.00% | −44,649−100.0% | Sold out |
| Two Sigma Securities, LLC | 0 | $0 | 0.00% | −42,232−100.0% | Sold out |
| Integrated Wealth Concepts LLC | 0 | $0 | 0.00% | −40,000−100.0% | Sold out |
| LPL Financial LLC | 0 | $0 | 0.00% | −15,199−100.0% | Sold out |
| Endowment Wealth Management, Inc. | 0 | $0 | 0.00% | −14,307−100.0% | Sold out |
| JPMorgan Chase & Co | 0 | $0 | 0.00% | −1,500−100.0% | Sold out |