Simplex Trading
SLDB icon

Simplex Trading’s Solid Biosciences SLDB Stock Holding History

Simplex Trading’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 		– Sell
-9,100
Closed -$65.5K – 10221
2026
Q1 		$65.5K Buy
9,100
+6,600
+264% +$42.4K ﹤0.01% 5562
2025
Q4 		$14.1K Sell
2,500
-1,700
-40% -$9.21K ﹤0.01% 6763
2025
Q3 		$25K Buy
4,200
+1,300
+45% +$7.6K ﹤0.01% 7149
2025
Q2 		$14K Sell
2,900
-51,300
-95% -$181K ﹤0.01% 7076
2025
Q1 		$200K Buy
+54,200
New +$232K ﹤0.01% 4333
2024
Q4 		– Sell
-200
Closed -$1K – 9533
2024
Q3 		$1K Buy
+200
New +$1.62K ﹤0.01% 8274
2024
Q2 		– Sell
-300
Closed -$3K – 9716
2024
Q1 		$3K Buy
+300
New +$2.81K ﹤0.01% 8309
2022
Q4 		– Sell
-1,040
Closed -$7K – 10308
2022
Q3 		$7K Buy
+1,040
New +$10.5K ﹤0.01% 8563
2022
Q2 		– Sell
-107
Closed -$1K – 10987
2022
Q1 		$1K Sell
107
-813
-88% -$14.3K ﹤0.01% 10142
2021
Q4 		$24K Sell
920
-867
-49% -$26.5K ﹤0.01% 8166
2021
Q3 		$101K Hold
1,787
– – ﹤0.01% 6614
2021
Q2 		$98K Buy
1,787
+1,766
+8,410% +$117K ﹤0.01% 6756
2021
Q1 		$175K Buy
21
+15
+250% +$1.66K ﹤0.01% 4946
2020
Q4 		$73K Buy
+6
New +$379 ﹤0.01% 5759
2020
Q3 		– Sell
-11
Closed -$47K – 8442
2020
Q2 		$47K Sell
11
-33
-75% -$1.37K ﹤0.01% 5555
2020
Q1 		$157K Sell
44
-7
-14% -$346 ﹤0.01% 3870
2019
Q4 		$339K Buy
51
+1
+2% +$110 ﹤0.01% 3148
2019
Q3 		$771K Buy
50
+20
+67% +$2.26K ﹤0.01% 2203
2019
Q2 		$254K Sell
30
-25
-45% -$2.73K ﹤0.01% 3233
2019
Q1 		$765K Buy
55
+19
+53% +$4.76K ﹤0.01% 2225
2018
Q4 		$1.43M Buy
+36
New +$16.9K ﹤0.01% 1334

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

Simplex Trading's SLDB Position: Q2 2026 in Review

Simplex Trading reduced its Solid Biosciences (SLDB) stake by 38% in Q2 2026, selling an estimated $44.1K and leaving 9,285 shares worth $92.8K. The position accounts for ﹤0.01% of the portfolio, ranked #5639.

Simplex Trading first reported a position in SLDB in Q3 2018 and has held it in 23 quarters since. The position peaked at $585K in Q1 2019. 157 funds tracked by Wall St. Rank hold SLDB as of Q2 2026.

  • Simplex Trading held 9,285 shares of Solid Biosciences worth $92.8K as of Q2 2026.
  • Simplex Trading sold 5,812 Solid Biosciences shares in Q2 2026, an estimated $44.1K.
  • Solid Biosciences made up ﹤0.01% of Simplex Trading's portfolio in Q2 2026, its #5639 holding.
  • Simplex Trading first reported a position in Solid Biosciences in Q3 2018 and has held it in 23 quarters since.
  • Simplex Trading's Solid Biosciences position peaked at $585K in Q1 2019.
  • 157 funds tracked by Wall St. Rank held Solid Biosciences as of Q2 2026.

Based on Simplex Trading's 13F filing for Q2 2026, filed 12 Aug 2026.