Cardio Diagnostics
CDIO
17 hedge funds and large institutions have $423K invested in Cardio Diagnostics in 2026 Q2 according to their latest regulatory filings, with 4 funds opening new positions, 1 increasing their positions, 5 reducing their positions, and 3 closing their positions.
33% more first-time investments, than exits
New positions opened: 4 | Existing positions closed: 3
6% more funds holding
Funds holding: 16 → 17 (+1)
2.82% less ownership
Funds ownership: 9.34% → 6.52% (-2.8%)
21% less capital invested
Capital invested by funds: $538K → $423K (-$115K)
80% less repeat investments, than reductions
Existing positions increased: 1 | Existing positions reduced: 5
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Renaissance Technologies
New York
|
+$64K |
| 2 |
Citadel Advisors
Miami,
Florida
|
+$36.1K |
| 3 |
XT
XTX Topco
George Town,
Cayman Islands
|
+$30.4K |
| 4 |
State Street
Boston,
Massachusetts
|
+$19.1K |
| 5 |
Wells Fargo
San Francisco,
California
|
+$4 |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Jane Street
New York
|
-$131K |
| 2 |
HF
HRT Financial
New York
|
-$121K |
| 3 |
SRL
Scientech Research LLC
Jersey City,
New Jersey
|
-$27.1K |
| 4 |
UBS Group
Zurich,
Switzerland
|
-$17.5K |
| 5 |
Geode Capital Management
Boston,
Massachusetts
|
-$11.2K |
CDIO Hedge Fund Activity: Q2 2026 in Review
17 of the 8,331 institutional investors tracked by Wall St. Rank reported a position in Cardio Diagnostics (CDIO) for Q2 2026, worth a combined $423K — down 21% from $538K a quarter earlier.
Buyers outnumbered sellers: 4 funds opened new CDIO positions and 3 closed out — a net gain of 1 holder — while 1 added to existing stakes and 5 trimmed.
The largest buyer was Renaissance Technologies, adding an estimated $64K. The largest seller was Jane Street, cutting an estimated $131K.
- 17 institutional investors held Cardio Diagnostics (CDIO) as of Q2 2026, up from 16 in Q1 2026.
- Funds reported $423K of Cardio Diagnostics stock for Q2 2026, down 21% quarter-over-quarter.
- 4 funds opened new Cardio Diagnostics positions in Q2 2026 and 3 closed out, a net change of +1 holder.
- The largest Cardio Diagnostics buyer in Q2 2026 was Renaissance Technologies, an estimated $64K added.
- The largest Cardio Diagnostics seller in Q2 2026 was Jane Street, an estimated $131K sold.
Based on aggregated 13F filings for Q2 2026.