SL
SLDB icon

Siren LLC’s Solid Biosciences SLDB Stock Holding History

Siren LLC’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 		$76.8M Hold
7,690,405
– – 1.55% 17
2026
Q1 		$55.4M Hold
7,690,405
– – 1.53% 21
2025
Q4 		$43.4M Buy
7,690,405
+274,500
+4% +$1.49M 1.29% 27
2025
Q3 		$45.8M Hold
7,415,905
– – 1.79% 20
2025
Q2 		$36.1M Hold
7,415,905
– – 1.87% 17
2025
Q1 		$27.4M Buy
7,415,905
+3,666,864
+98% +$15.7M 1.55% 20
2024
Q4 		$15M Buy
3,749,041
+1,000,000
+36% +$5.49M 0.66% 39
2024
Q3 		$19.2M Buy
+2,749,041
New +$22.3M 0.96% 33

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
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
RI
RTW Investments New York $11.7B AUM 174.13% 1-Year Est. Return

Siren LLC's SLDB Position: Q2 2026 in Review

Siren LLC held its Solid Biosciences (SLDB) position steady in Q2 2026 at 7,690,405 shares worth $76.8M. The position accounts for 1.55% of the portfolio, ranked #17.

Siren LLC first reported a position in SLDB in Q3 2024 and has held it in 8 quarters since. 156 funds tracked by Wall St. Rank hold SLDB as of Q2 2026.

  • Siren LLC held 7,690,405 shares of Solid Biosciences worth $76.8M as of Q2 2026.
  • Siren LLC left its Solid Biosciences share count unchanged in Q2 2026.
  • Solid Biosciences made up 1.55% of Siren LLC's portfolio in Q2 2026, its #17 holding.
  • Siren LLC first reported a position in Solid Biosciences in Q3 2024 and has held it in 8 quarters since.
  • 156 funds tracked by Wall St. Rank held Solid Biosciences as of Q2 2026.

Based on Siren LLC's 13F filing for Q2 2026, filed 13 Aug 2026.