Starling Oncology Institute, Inc. Common Stock
STLN
108 hedge funds and large institutions have $121M invested in Starling Oncology Institute, Inc. Common Stock in 2025 Q3 according to their latest regulatory filings, with 35 funds opening new positions, 33 increasing their positions, 24 reducing their positions, and 6 closing their positions.
3,185% more call options, than puts
Call options by funds: $3.55M | Put options by funds: $108K
483% more first-time investments, than exits
New positions opened: 35 | Existing positions closed: 6
85% more capital invested
Capital invested by funds: $65.5M → $121M (+$55.5M)
38% more repeat investments, than reductions
Existing positions increased: 33 | Existing positions reduced: 24
37% more funds holding
Funds holding: 79 → 108 (+29)
2.33% more ownership
Funds ownership: 34.75% → 37.08% (+2.3%)
33% less funds holding in top 10
Funds holding in top 10: 3 → 2 (-1)
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
CP
CenterBook Partners
Greenwich,
Connecticut
|
+$6.81M |
| 2 |
KWM
Kanen Wealth Management
Coconut Creek,
Florida
|
+$6.31M |
| 3 |
UBS Group
Zurich,
Switzerland
|
+$2.18M |
| 4 |
Millennium Management
New York
|
+$1.87M |
| 5 |
Goldman Sachs
New York
|
+$1.81M |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
TAS
TIFF Advisory Services
Radnor,
Pennsylvania
|
-$9.52M |
| 2 |
JAIC
Josh Arnold Investment Consultant
Edina,
Minnesota
|
-$7.68M |
| 3 |
Marshall Wace
London,
United Kingdom
|
-$4.97M |
| 4 |
FL
FreeGulliver LLC
New Orleans,
Louisiana
|
-$458K |
| 5 |
PCM
Portolan Capital Management
Boston,
Massachusetts
|
-$454K |
STLN Hedge Fund Activity: Q3 2025 in Review
108 of the 7,621 institutional investors tracked by Wall St. Rank reported a position in Starling Oncology Institute, Inc. Common Stock (STLN) for Q3 2025, worth a combined $121M — up 85% from $65.5M a quarter earlier.
Buyers outnumbered sellers: 35 funds opened new STLN positions and 6 closed out — a net gain of 29 holders — while 33 added to existing stakes and 24 trimmed.
The largest buyer was CenterBook Partners, adding an estimated $6.81M. The largest seller was TIFF Advisory Services, cutting an estimated $9.52M.
- 108 institutional investors held Starling Oncology Institute, Inc. Common Stock (STLN) as of Q3 2025, up from 79 in Q2 2025.
- Funds reported $121M of Starling Oncology Institute, Inc. Common Stock stock for Q3 2025, up 85% quarter-over-quarter.
- 35 funds opened new Starling Oncology Institute, Inc. Common Stock positions in Q3 2025 and 6 closed out, a net change of +29 holders.
- The largest Starling Oncology Institute, Inc. Common Stock buyer in Q3 2025 was CenterBook Partners, an estimated $6.81M added.
- The largest Starling Oncology Institute, Inc. Common Stock seller in Q3 2025 was TIFF Advisory Services, an estimated $9.52M sold.
Based on aggregated 13F filings for Q3 2025.