# CARDIO DIAGNOSTICS HOLDGS IN (CDIO)

> Institutional ownership reported to the SEC as of Q2 2026, from Form 13F filings. Source: https://holderbook.com/stocks/CDIO/

- Reporting holders: 17
- Reported value: $486.6K
- Shares held by institutions: 222,199 of 2,959,469 outstanding
- Held through calls: 0.0%
- Held through puts: 0.0%

A 13F reports long US equity positions only. Shorts, bonds, foreign listings and cash are not visible here, and positions are disclosed up to 45 days after the quarter ends.

## Largest holders

| Manager | Value | Shares | Share of their book | Quarters held |
|---|---|---|---|---|
| [RENAISSANCE TECHNOLOGIES LLC](https://holderbook.com/funds/1037389-renaissance-technologies-llc/) | $107.7K | 49,200 | 0.0% | 2 |
| [CITADEL ADVISORS LLC](https://holderbook.com/funds/1423053-citadel-advisors-llc/) | $83.5K | 38,142 | 0.0% | 1 |
| [BlackRock, Inc.](https://holderbook.com/funds/2012383-blackrock-inc/) | $76.0K | 34,708 | 0.0% | 5 |
| [GEODE CAPITAL MANAGEMENT, LLC](https://holderbook.com/funds/1214717-geode-capital-management-llc/) | $57.4K | 26,233 | 0.0% | 5 |
| [STATE STREET CORP](https://holderbook.com/funds/93751-state-street-corp/) | $44.2K | 20,198 | 0.0% | 1 |
| [VANGUARD CAPITAL MANAGEMENT LLC](https://holderbook.com/funds/2100119-vanguard-capital-management-llc/) | $44.1K | 20,155 | 0.0% | 2 |
| [XTX Topco Ltd](https://holderbook.com/funds/1828301-xtx-topco-ltd/) | $35.2K | 16,093 | 0.0% | 1 |
| [JANE STREET GROUP, LLC](https://holderbook.com/funds/1595888-jane-street-group-llc/) | $26.1K | 11,933 | 0.0% | 2 |
| [VANGUARD FIDUCIARY TRUST CO](https://holderbook.com/funds/933478-vanguard-fiduciary-trust-co/) | $6.2K | 2,824 | 0.0% | 2 |
| [Tower Research Capital LLC (TRC)](https://holderbook.com/funds/1533421-tower-research-capital-llc-trc/) | $4.0K | 1,809 | 0.0% | 5 |
| [UBS Group AG](https://holderbook.com/funds/1610520-ubs-group-ag/) | $1.4K | 656 | 0.0% | 3 |
| [WOLVERINE ASSET MANAGEMENT LLC](https://holderbook.com/funds/1279891-wolverine-asset-management-llc/) | $228 | 104 | 0.0% | 5 |
| [MORGAN STANLEY](https://holderbook.com/funds/895421-morgan-stanley/) | $219 | 100 | 0.0% | 5 |
| [OSAIC HOLDINGS, INC.](https://holderbook.com/funds/1677044-osaic-holdings-inc/) | $35 | 16 | 0.0% | 5 |
| [SHP Wealth Management](https://holderbook.com/funds/1807060-shp-wealth-management/) | $35 | 16 | 0.0% | 3 |
| [SBI Securities Co., Ltd.](https://holderbook.com/funds/1851815-sbi-securities-co-ltd/) | $22 | 10 | 0.0% | 5 |
| [WELLS FARGO & COMPANY/MN](https://holderbook.com/funds/72971-wells-fargo-company-mn/) | $4 | 2 | 0.0% | 1 |

## Quarter by quarter

| Quarter | Holders | Reported value |
|---|---|---|
| Q2 2026 | 17 | $486.6K |
| Q1 2026 | 16 | $538.1K |
| Q4 2025 | 16 | $351.0K |
| Q3 2025 | 13 | $462.2K |
| Q2 2025 | 15 | $332.0K |
| Q1 2025 | 23 | $836.3K |
| Q4 2024 | 23 | $2.4M |
| Q3 2024 | 15 | $373.7K |
| Q2 2024 | 16 | $996.1K |
| Q1 2024 | 14 | $2.3M |
| Q4 2023 | 14 | $4.1M |
| Q3 2023 | 15 | $152.4K |