SION
Sionna Therapeutics
SION
SION
78 hedge funds and large institutions have $1.26B invested in Sionna Therapeutics in 2025 Q3 according to their latest regulatory filings, with 19 funds opening new positions, 20 increasing their positions, 19 reducing their positions, and 6 closing their positions.
New
Increased
Maintained
Reduced
Closed
more first-time investments, than exits
New positions opened: | Existing positions closed:
more capital invested
Capital invested by funds: $ → $
more funds holding
Funds holding: →
more repeat investments, than reductions
Existing positions increased: | Existing positions reduced:
0% more funds holding in top 10
Funds holding in top 10: 4 → 4 (0)
1.41% less ownership
Funds ownership: 98.47% → 97.06% (-1.4%)
Holders
78
Holding in Top 10
4
Calls
–
Puts
–
Top Buyers
| 1 | +$15.1M | |
| 2 | +$7.19M | |
| 3 | +$6.1M | |
| 4 |
Millennium Management
New York
|
+$5.88M |
| 5 |
State Street
Boston,
Massachusetts
|
+$3.4M |
Top Sellers
| 1 | -$22.6M | |
| 2 | -$7.58M | |
| 3 | -$7.13M | |
| 4 |
T. Rowe Price Associates
Baltimore,
Maryland
|
-$6.57M |
| 5 |
Citadel Advisors
Miami,
Florida
|
-$2.76M |
