BCM
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Boxer Capital Management’s Solid Biosciences SLDB Stock Holding History

Boxer Capital Management’s Portfolio SLDB Stock Details SLDB Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q2 		$3M Hold
300,000
– – 0.23% 50
2026
Q1 		$2.16M Hold
300,000
– – 0.28% 44
2025
Q4 		$1.69M Sell
300,000
-300,000
-50% -$1.63M 0.37% 38
2025
Q3 		$3.7M Buy
+600,000
New +$3.51M 1.18% 20
2025
Q2 		– Sell
-1,240,700
Closed -$4.59M – 32
2025
Q1 		$4.59M Buy
+1,240,700
New +$5.31M 1.38% 20

Other funds holding SLDB

RCM
RA Capital Management Boston, Massachusetts $11.5B AUM 168.77% 1-Year Est. Return
PA
Perceptive Advisors New York $6.66B AUM 360.84% 1-Year Est. Return
BCLSI
Bain Capital Life Sciences Investors Boston, Massachusetts $1.68B AUM 126.09% 1-Year Est. Return
SL
Siren LLC Greenwich, Connecticut $4.94B AUM 244.43% 1-Year Est. Return
BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
Fidelity Investments
Fidelity Investments Boston, Massachusetts $2.3T AUM 54.33% 1-Year Est. Return
AC
Armistice Capital New York $8.17B AUM 68.82% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
JT
Jupiter Topco New York $245B AUM
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM

Boxer Capital Management's SLDB Position: Q2 2026 in Review

Boxer Capital Management held its Solid Biosciences (SLDB) position steady in Q2 2026 at 300,000 shares worth $3M. The position accounts for 0.23% of the portfolio, ranked #50.

Boxer Capital Management first reported a position in SLDB in Q1 2025 and has held it in 5 quarters since. The position peaked at $4.59M in Q1 2025. 156 funds tracked by Wall St. Rank hold SLDB as of Q2 2026.

  • Boxer Capital Management held 300,000 shares of Solid Biosciences worth $3M as of Q2 2026.
  • Boxer Capital Management left its Solid Biosciences share count unchanged in Q2 2026.
  • Solid Biosciences made up 0.23% of Boxer Capital Management's portfolio in Q2 2026, its #50 holding.
  • Boxer Capital Management first reported a position in Solid Biosciences in Q1 2025 and has held it in 5 quarters since.
  • Boxer Capital Management's Solid Biosciences position peaked at $4.59M in Q1 2025.
  • 156 funds tracked by Wall St. Rank held Solid Biosciences as of Q2 2026.

Based on Boxer Capital Management's 13F filing for Q2 2026, filed 14 Aug 2026.