CDIO — CARDIO DIAGNOSTICS HOLDGS IN
As of Q2 2026, 7 SEC-registered investment managers reported holding CDIO (CARDIO DIAGNOSTICS HOLDGS IN) in their latest 13F filings, with a combined reported value of $284.63K across 129.97K shares. That is +40.9% by share count (+37.72K shares) versus the previous quarter, while reported value moved +58.2%. Ownership is concentrated: the five largest holders account for 99.9% of reported value and the top ten for 100.0%.
Compared with the prior quarter, 2 opened new positions, 1 added to existing stakes, 2 trimmed, 1 exited entirely. 13F holdings are quarter-end snapshots, so these moves reflect positioning as of Q2 2026, not real-time trading.
CDIO is classified in the Health Care sector.
All figures on this page are computed from SEC Form 13F quarterly filings. 13F filers disclose long positions of $100,000 or more within 45 days of quarter end; short positions, options overlays and intra-quarter trades are not included, so treat the numbers as a quarterly snapshot of institutional ownership rather than real-time positioning.
Q2 2026 — 7 funds
| Fund | Shares | Value | Portfolio Weight | Change |
|---|---|---|---|---|
| Renaissance Technologies history | 49.20K | $107.75K | 0.00% | Add |
| BlackRock Inc history | 34.71K | $76.01K | 0.00% | Hold |
| Geode Capital Management history | 26.23K | $57.45K | 0.00% | Reduce |
| Citadel Advisors history | 19.07K | $41.77K | 0.00% | New |
| UBS Group AG history | 656 | $1.44K | 0.00% | Reduce |
| Morgan Stanley history | 100 | $219 | 0.00% | Hold |
| Wells Fargo & Co history | 2 | $4 | 0.00% | New |
Q1 2026 — 6 funds
| Fund | Shares | Value | Portfolio Weight | Change |
|---|---|---|---|---|
| BlackRock Inc history | 34.71K | $67.68K | 0.00% | Reduce |
| Geode Capital Management history | 32.18K | $62.74K | 0.00% | Add |
| Renaissance Technologies history | 15.35K | $29.93K | 0.00% | New |
| UBS Group AG history | 9.92K | $19.34K | 0.00% | Add |
| Morgan Stanley history | 100 | $195 | 0.00% | Hold |
| Citigroup Inc history | 1 | $2 | 0.00% | Reduce |
Q4 2025 — 9 funds
| Fund | Shares | Value | Portfolio Weight | Change |
|---|---|---|---|---|
| BlackRock Inc history | 35.57K | $96.39K | 0.00% | Hold |
| Vanguard Group history | 24.12K | $65.38K | 0.00% | Hold |
| Geode Capital Management history | 15.13K | $41.02K | 0.00% | Hold |
| Citadel Advisors history | 10.86K | $29.43K | 0.00% | Reduce |
| PNC Financial Services history | 1.35K | $3.66K | 0.00% | Hold |
| UBS Group AG history | 952 | $2.58K | 0.00% | New |
| Morgan Stanley history | 100 | $271 | 0.00% | Reduce |
| Citigroup Inc history | 26 | $70 | 0.00% | New |
| Bank of America Corp history | 16 | $43 | 0.00% | Add |
Q3 2025 — 7 funds
| Fund | Shares | Value | Portfolio Weight | Change |
|---|---|---|---|---|
| BlackRock Inc history | 35.57K | $142.62K | 0.00% | Hold |
| Vanguard Group history | 24.12K | $97.22K | 0.00% | Add |
| Citadel Advisors history | 19.52K | $78.67K | 0.00% | New |
| Geode Capital Management history | 15.10K | $60.84K | 0.00% | Add |
| PNC Financial Services history | 1.35K | $5.41K | 0.00% | Hold |
| Morgan Stanley history | 123 | $493 | 0.00% | Add |
| Bank of America Corp history | 15 | $60 | 0.00% | Hold |
Q2 2025 — 8 funds
| Fund | Shares | Value | Portfolio Weight | Change |
|---|---|---|---|---|
| BlackRock Inc history | 35.57K | $128.04K | 0.00% | Reduce |
| Geode Capital Management history | 13.37K | $48.11K | 0.00% | Reduce |
| Vanguard Group history | 12.68K | $45.66K | 0.00% | Reduce |
| PNC Financial Services history | 1.35K | $4.86K | 0.00% | Reduce |
| UBS Group AG history | 697 | $2.51K | 0.00% | Reduce |
| Morgan Stanley history | 100 | $360 | 0.00% | Reduce |
| Bank of America Corp history | 15 | $54 | 0.00% | Reduce |
| Fidelity Management & Research (FMR) history | 3 | $11 | 0.00% | New |
Q1 2025 — 9 funds
| Fund | Shares | Value | Portfolio Weight | Change |
|---|---|---|---|---|
| BlackRock Inc history | 1.07M | $352.13K | 0.00% | Hold |
| Geode Capital Management history | 395.00K | $130.35K | 0.00% | Add |
| Vanguard Group history | 372.52K | $122.93K | 0.00% | Add |
| UBS Group AG history | 167.14K | $55.16K | 0.00% | Add |
| Northern Trust Corp history | 48.62K | $16.04K | 0.00% | Hold |
| PNC Financial Services history | 40.50K | $13.37K | 0.00% | Hold |
| Morgan Stanley history | 4.50K | $1.49K | 0.00% | Add |
| JPMorgan Chase & Co history | 1.50K | $495 | 0.00% | New |
| Bank of America Corp history | 312 | $103 | 0.00% | Add |
New Positions (Q2 2026)
- Citadel Advisors 19.07K sh · $41.77K
- Wells Fargo & Co 2 sh · $4
Fully Exited (vs previous quarter)
- Citigroup Inc sold 1 sh · $2
Fund Position History — shares by quarter (top 16 funds)
| Fund | Q2 2026 | Q1 2026 | Q4 2025 | Q3 2025 | Q2 2025 | Q1 2025 | Q4 2024 | Q3 2024 | Q2 2024 | Q1 2024 | Q4 2023 | Q3 2023 | Q2 2023 | Q1 2023 | Q4 2022 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Renaissance Technologies | 49.20K | 15.35K | — | — | — | — | — | — | — | — | — | 17.80K | — | — | — |
| BlackRock Inc | 34.71K | 34.71K | 35.57K | 35.57K | 35.57K | 1.07M | 1.07M | 1.07M | — | — | — | — | — | — | — |
| Geode Capital Management | 26.23K | 32.18K | 15.13K | 15.10K | 13.37K | 395.00K | 364.39K | 184.41K | 174.55K | 152.29K | 138.41K | 75.48K | 75.48K | 74.28K | — |
| Citadel Advisors | 19.07K | — | 10.86K | 19.52K | — | — | — | — | — | — | — | — | — | — | — |
| UBS Group AG | 656 | 9.92K | 952 | — | 697 | 167.14K | 66.60K | — | 90.91K | 12.52K | — | 61 | — | 2.68K | 1.38K |
| Morgan Stanley | 100 | 100 | 100 | 123 | 100 | 4.50K | 3.00K | 1.00K | — | — | — | — | — | — | 3 |
| Wells Fargo & Co | 2 | — | — | — | — | — | — | — | — | 134 | 117 | 47 | 44 | 41 | 41 |
| Bank of America Corp | — | — | 16 | 15 | 15 | 312 | 297 | 162 | 151 | — | — | — | — | 15.00K | — |
| Citigroup Inc | — | 1 | 26 | — | — | — | 900 | — | — | — | — | — | — | — | — |
| PNC Financial Services | — | — | 1.35K | 1.35K | 1.35K | 40.50K | 40.50K | 40.50K | 40.50K | 40.50K | 40.50K | 40.50K | 40.50K | 40.50K | — |
| Vanguard Group | — | — | 24.12K | 24.12K | 12.68K | 372.52K | 232.14K | 232.14K | 232.14K | 232.14K | 232.14K | 64.02K | 64.02K | 64.02K | — |
| Fidelity Management & Research (FMR) | — | — | — | — | 3 | — | — | — | — | — | — | — | — | — | — |
| JPMorgan Chase & Co | — | — | — | — | — | 1.50K | — | — | — | — | — | 6 | — | — | — |
| D. E. Shaw & Co | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 20.08K |
| Millennium Management | — | — | — | — | — | — | 256.94K | — | — | — | — | — | — | — | — |
| Northern Trust Corp | — | — | — | — | — | 48.62K | 48.62K | 48.62K | 48.62K | 26.30K | 46.11K | — | — | — | — |
▲ Bought Low (fund opened/added, stock rose ≥5% next quarter) ▼ Sold High (fund reduced, stock fell ≥5% next quarter)
Drag / scroll to zoom · Default shows the most recent year · Annotations come from quarterly fund actions in 13F filings · Hover a marker for details