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 		$92.8K Sell
9,285
-5,812
-38% -$44.1K ﹤0.01% 5639
2026
Q1 		$109K Sell
15,097
-45,437
-75% -$292K ﹤0.01% 4985
2025
Q4 		$341K Sell
60,534
-23,467
-28% -$127K ﹤0.01% 3692
2025
Q3 		$518K Buy
+84,001
New +$491K ﹤0.01% 3782
2025
Q2 		– Sell
-1,095
Closed -$3.87K – 9650
2025
Q1 		$4K Sell
1,095
-11,165
-91% -$47.8K ﹤0.01% 7726
2024
Q4 		$49K Sell
12,260
-10,185
-45% -$55.9K ﹤0.01% 5894
2024
Q3 		$156K Buy
22,445
+21,884
+3,901% +$177K ﹤0.01% 4773
2024
Q2 		$3K Buy
+561
New +$5.02K ﹤0.01% 8161
2024
Q1 		– Sell
-537
Closed -$5.03K – 9790
2023
Q4 		$3K Buy
537
+510
+1,889% +$1.63K ﹤0.01% 8147
2023
Q3 		$0 Buy
+27
New +$105 ﹤0.01% 9724
2022
Q3 		– Sell
-346
Closed -$3.49K – 10799
2022
Q2 		$3K Sell
346
-2,683
-89% -$27.9K ﹤0.01% 9205
2022
Q1 		$54K Buy
3,029
+2,063
+214% +$36.4K ﹤0.01% 7028
2021
Q4 		$25K Sell
966
-609
-39% -$18.6K ﹤0.01% 8127
2021
Q3 		$89K Hold
1,575
– – ﹤0.01% 6789
2021
Q2 		$86K Sell
1,575
-704
-31% -$46.5K ﹤0.01% 6948
2021
Q1 		$189K Buy
2,279
+969
+74% +$107K ﹤0.01% 4829
2020
Q4 		$148K Buy
+1,310
New +$82.9K ﹤0.01% 5000
2020
Q2 		– Sell
-3,328
Closed -$138K – 8296
2020
Q1 		$119K Sell
3,328
-1,331
-29% -$65.9K ﹤0.01% 4184
2019
Q4 		$310K Buy
4,659
+2,488
+115% +$275K ﹤0.01% 3251
2019
Q3 		$336K Buy
+2,171
New +$246K ﹤0.01% 3052
2019
Q2 		– Sell
-4,242
Closed -$463K – 7727
2019
Q1 		$585K Buy
4,242
+3,676
+649% +$921K ﹤0.01% 2499
2018
Q4 		$227K Buy
566
+523
+1,216% +$246K ﹤0.01% 3022
2018
Q3 		$30K Buy
+43
New +$27K ﹤0.01% 5649

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.