William Blair & Company
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William Blair & Company’s Solid Biosciences SLDB Stock Holding History

William Blair & Company’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
Q1 		$4.69M Buy
+651,216
New +$4.18M 0.01% 518
2025
Q3 		– Sell
-165,700
Closed -$807K – 1899
2025
Q2 		$807K Buy
+165,700
New +$586K ﹤0.01% 957

Other funds holding SLDB

PA
Perceptive Advisors New York $5.12B AUM 314.02% 1-Year Est. Return
BCLSI
Bain Capital Life Sciences Investors Boston, Massachusetts $1.11B AUM 171.34% 1-Year Est. Return
RCM
RA Capital Management Boston, Massachusetts $9.44B AUM 157.3% 1-Year Est. Return
SL
Siren LLC Greenwich, Connecticut $3.61B AUM 203.3% 1-Year Est. Return
VPC
Vestal Point Capital New York $3.58B AUM 189.12% 1-Year Est. Return
BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
Janus Henderson Group
Janus Henderson Group London, United Kingdom $209B AUM 37.72% 1-Year Est. Return
Fidelity Investments
Fidelity Investments Boston, Massachusetts $1.9T AUM 41.92% 1-Year Est. Return
DTC
Deep Track Capital Greenwich, Connecticut $6.12B AUM 144% 1-Year Est. Return
AC
Armistice Capital New York $5.62B AUM 36.06% 1-Year Est. Return

William Blair & Company's SLDB Position: Q1 2026 in Review

William Blair & Company opened a new position in Solid Biosciences (SLDB) in Q1 2026: 651,216 shares worth $4.69M. The stake represents 0.01% of the portfolio and ranks #518 among its holdings. This is a return to the name: William Blair & Company previously reported a position in SLDB as recently as Q2 2025.

William Blair & Company first reported a position in SLDB in Q2 2025 and has held it in 2 quarters since. 150 funds tracked by Wall St. Rank hold SLDB as of Q1 2026.

  • William Blair & Company held 651,216 shares of Solid Biosciences worth $4.69M as of Q1 2026.
  • Solid Biosciences was a new William Blair & Company position in Q1 2026.
  • Solid Biosciences made up 0.01% of William Blair & Company's portfolio in Q1 2026, its #518 holding.
  • William Blair & Company first reported a position in Solid Biosciences in Q2 2025 and has held it in 2 quarters since.
  • 150 funds tracked by Wall St. Rank held Solid Biosciences as of Q1 2026.

Based on William Blair & Company's 13F filing for Q1 2026, filed 8 May 2026.