Cardio Diagnostics
CDIO
14 hedge funds and large institutions have $462K invested in Cardio Diagnostics in 2025 Q3 according to their latest regulatory filings, with 2 funds opening new positions, 4 increasing their positions, 2 reducing their positions, and 4 closing their positions.
100% more repeat investments, than reductions
Existing positions increased: 4 | Existing positions reduced: 2
52% more capital invested
Capital invested by funds: $305K → $462K (+$157K)
1.65% more ownership
Funds ownership: 4.88% → 6.53% (+1.6%)
13% less funds holding
Funds holding: 16 → 14 (-2)
50% less first-time investments, than exits
New positions opened: 2 | Existing positions closed: 4
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Citadel Advisors
Miami,
Florida
|
+$77.1K |
| 2 |
DS
DRW Securities
Chicago,
Illinois
|
+$71.7K |
| 3 |
Vanguard Group
Malvern,
Pennsylvania
|
+$45.2K |
| 4 |
Geode Capital Management
Boston,
Massachusetts
|
+$6.84K |
| 5 |
TRCT
Tower Research Capital (TRC)
New York
|
+$2.72K |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Susquehanna International Group
Bala Cynwyd,
Pennsylvania
|
-$47K |
| 2 |
Royal Bank of Canada
Toronto,
Ontario, Canada
|
-$27K |
| 3 |
UBS Group
Zurich,
Switzerland
|
-$2.51K |
| 4 |
SS
SBI Securities
Tokyo,
Japan
|
-$170 |
| 5 |
Osaic Holdings
Scottsdale,
Arizona
|
-$71 |
CDIO Hedge Fund Activity: Q3 2025 in Review
14 of the 7,625 institutional investors tracked by Wall St. Rank reported a position in Cardio Diagnostics (CDIO) for Q3 2025, worth a combined $462K — up 52% from $305K a quarter earlier.
Sellers outnumbered buyers: 4 funds closed out of CDIO and 2 opened new positions — a net loss of 2 holders — while 2 trimmed existing stakes and 4 added.
The largest buyer was Citadel Advisors, opening a new position worth an estimated $77.1K. The largest seller was Susquehanna International Group, exiting entirely with an estimated $47K sold.
- 14 institutional investors held Cardio Diagnostics (CDIO) as of Q3 2025, down from 16 in Q2 2025.
- Funds reported $462K of Cardio Diagnostics stock for Q3 2025, up 52% quarter-over-quarter.
- 2 funds opened new Cardio Diagnostics positions in Q3 2025 and 4 closed out, a net change of -2 holders.
- The largest Cardio Diagnostics buyer in Q3 2025 was Citadel Advisors, an estimated $77.1K added.
- The largest Cardio Diagnostics seller in Q3 2025 was Susquehanna International Group, an estimated $47K sold.
Based on aggregated 13F filings for Q3 2025.