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Solid Biosciences
SLDB

114 hedge funds and large institutions have $400M invested in Solid Biosciences in 2025 Q2 according to their latest regulatory filings, with 25 funds opening new positions, 54 increasing their positions, 14 reducing their positions, and 35 closing their positions.

New
Increased
Maintained
Reduced
Closed

666% more call options, than puts

Call options by funds: $1.19M | Put options by funds: $155K

286% more repeat investments, than reductions

Existing positions increased: 54 | Existing positions reduced: 14

200% more funds holding in top 10

Funds holding in top 10: 1 → 3 (+2)

37% more capital invested

Capital invested by funds: $292M → $400M (+$109M)

4.3% more ownership

Funds ownership: 101.75% → 106.06% (+4.3%)

8% less funds holding

Funds holding: 124 → 114 (-10)

29% less first-time investments, than exits

New positions opened: 25 | Existing positions closed: 35

Holders
114
Holders Change
-10
Holders Change %
-8.06%
% of All Funds
1.5%
Holding in Top 10
3
Holding in Top 10 Change
+2
Holding in Top 10 Change %
+200%
% of All Funds
0.04%
New
25
Increased
54
Reduced
14
Closed
35
Calls
$1.19M
Puts
$155K
Net Calls
+$1.03M
Net Calls Change
+$1.03M

Top Buyers

Rank Fund Capital Flow
1
BlackRock
BlackRock
New York
+$9.79M
2
RCM
RA Capital Management
Massachusetts
+$5.24M
3
NCM
Nantahala Capital Management
Connecticut
+$5.03M
4
Point72 Asset Management
Point72 Asset Management
Connecticut
+$3.76M
5
Geode Capital Management
Geode Capital Management
Massachusetts
+$3.46M

Top Sellers

Rank Fund Capital Flow
1
CC
Commodore Capital
New York
-$21.6M
2
VA
VR Adviser
New York
-$9.18M
3
BCM
Boxer Capital Management
California
-$4.59M
4
CC
Casdin Capital
New York
-$2.87M
5
EC
EcoR1 Capital
California
-$2.75M
Name Holding Trade Value Shares
Change 		Change in
Stake
RCAP
126
Resolute Capital Asset Partners
Colorado
– -$555K -150,000 Closed
Squarepoint
127
Squarepoint
New York
– -$391K -105,682 Closed
LGM
128
Logos Global Management
California
– -$370K -100,000 Closed
BFM
129
Boothbay Fund Management
New York
– -$259K -69,874 Closed
Walleye Capital
130
Walleye Capital
New York
– -$204K -55,229 Closed
AI
131
Atom Investors
Texas
– -$152K -40,987 Closed
XT
132
XTX Topco
Cayman Islands
– -$151K -40,930 Closed
FRM
133
Fox Run Management
Connecticut
– -$141K -38,226 Closed
QC
134
Quadrature Capital
United Kingdom
– -$138K -37,325 Closed
ACM
135
ADAR1 Capital Management
Texas
– -$128K -34,479 Closed
Allianz Asset Management
136
Allianz Asset Management
Germany
– -$100K -27,100 Closed
VF
137
Virtu Financial
New York
– -$95K -25,742 Closed
HF
138
HRT Financial
New York
– -$55K -15,051 Closed
CF
139
Corebridge Financial
Texas
– -$43.1K -11,643 Closed
GSC
140
Ground Swell Capital
South Carolina
– -$41.5K -11,223 Closed
IC
141
IEQ Capital
California
– -$41.2K -11,124 Closed
Group One Trading
142
Group One Trading
Illinois
– -$13.3K -3,768 Closed
Federated Hermes
143
Federated Hermes
Pennsylvania
– -$8.86K -2,395 Closed
CIAM
144
Caitong International Asset Management
Hong Kong
– -$7.37K -1,992 Closed
Simplex Trading
145
Simplex Trading
Illinois
– -$3.87K -1,095 Closed
SAM
146
Smartleaf Asset Management
Massachusetts
– -$3.46K -800 Closed
CCM
147
Coldstream Capital Management
Washington
– -$2.54K -685 Closed
GI
148
GAMMA Investing
California
– -$566 -153 Closed
RA
149
Rise Advisors
New York
– -$352 -95 Closed
2 3 4 5
6

SLDB Hedge Fund Activity: Q2 2025 in Review

114 of the 7,595 institutional investors tracked by Wall St. Rank reported a position in Solid Biosciences (SLDB) for Q2 2025, worth a combined $400M — up 37% from $292M a quarter earlier.

Sellers outnumbered buyers: 35 funds closed out of SLDB and 25 opened new positions — a net loss of 10 holders — while 14 trimmed existing stakes and 54 added.

The largest buyer was BlackRock, adding an estimated $9.79M. The largest seller was Commodore Capital, exiting entirely with an estimated $21.6M sold.

  • 114 institutional investors held Solid Biosciences (SLDB) as of Q2 2025, down from 124 in Q1 2025.
  • Funds reported $400M of Solid Biosciences stock for Q2 2025, up 37% quarter-over-quarter.
  • 25 funds opened new Solid Biosciences positions in Q2 2025 and 35 closed out, a net change of -10 holders.
  • The largest Solid Biosciences buyer in Q2 2025 was BlackRock, an estimated $9.79M added.
  • The largest Solid Biosciences seller in Q2 2025 was Commodore Capital, an estimated $21.6M sold.

Based on aggregated 13F filings for Q2 2025.