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STLN

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.

New
Increased
Maintained
Reduced
Closed

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)

Holders
108
Holders Change
+29
Holders Change %
+36.71%
% of All Funds
1.42%
Holding in Top 10
2
Holding in Top 10 Change
-1
Holding in Top 10 Change %
-33.33%
% of All Funds
0.03%
New
35
Increased
33
Reduced
24
Closed
6
Calls
$3.55M
Puts
$108K
Net Calls
+$3.44M
Net Calls Change
+$3.44M

Top Buyers

Rank Fund Capital Flow
1
CP
CenterBook Partners
Connecticut
+$6.81M
2
KWM
Kanen Wealth Management
Florida
+$6.31M
3
UBS Group
UBS Group
Switzerland
+$2.18M
4
Millennium Management
Millennium Management
New York
+$1.87M
5
Goldman Sachs
Goldman Sachs
New York
+$1.81M

Top Sellers

Rank Fund Capital Flow
1
TAS
TIFF Advisory Services
Pennsylvania
-$9.52M
2
JAIC
Josh Arnold Investment Consultant
Minnesota
-$7.68M
3
Marshall Wace
Marshall Wace
United Kingdom
-$4.97M
4
FL
FreeGulliver LLC
Louisiana
-$458K
5
PCM
Portolan Capital Management
Massachusetts
-$454K
Name Holding Trade Value Shares
Change 		Change in
Stake
NL
26
NKCFO LLC
Illinois
$663K +$651K +190,000 New
Charles Schwab
27
Charles Schwab
California
$654K +$137K +40,000 +27%
CSS
28
Cubist Systematic Strategies
Connecticut
$646K +$516K +150,463 +434%
EI
29
EAM Investors
California
$637K -$45.7K -13,328 -7%
MLM
30
Mount Lucas Management
Pennsylvania
$560K +$286K +83,500 +108%
Squarepoint
31
Squarepoint
New York
$498K +$488K +142,554 New
Bank of New York Mellon
32
Bank of New York Mellon
New York
$460K -$400K -116,749 -47%
PAM
33
Panagora Asset Management
Massachusetts
$443K – – –
Jane Street
34
Jane Street
New York
$436K +$428K +124,888 New
ECM
35
ExodusPoint Capital Management
New York
$402K +$395K +115,243 New
MS
36
Maven Securities
Jersey
$349K +$343K +100,000 New
National Bank of Canada
37
National Bank of Canada
Quebec, Canada
$320K +$52.9K +15,428 +20%
Morgan Stanley
38
Morgan Stanley
New York
$318K -$289K -84,357 -48%
Deutsche Bank
39
Deutsche Bank
Germany
$309K +$298K +86,846 +5,312%
Barclays
40
Barclays
United Kingdom
$300K -$61.1K -17,823 -17%
JF
41
Jump Financial
Illinois
$291K +$286K +83,400 New
RhumbLine Advisers
42
RhumbLine Advisers
Massachusetts
$291K -$6.35K -1,852 -2%
LF
43
Lee Financial
Texas
$284K – – –
HighTower Advisors
44
HighTower Advisors
Illinois
$284K – – –
KWA
45
Kingswood Wealth Advisors
California
$271K +$45.2K +13,200 +20%
N
46
Nuveen
North Carolina
$268K – – –
GCM
47
Graham Capital Management
Connecticut
$253K -$47.3K -13,798 -16%
FCG
48
Fielder Capital Group
Tennessee
$245K – – –
WP
49
WealthShield Partners
North Carolina
$245K – – –
PAG
50
Private Advisor Group
New Jersey
$241K +$236K +68,922 New
1
2
3 4 5

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.