Tudor Investment Corp
CSTL icon

Tudor Investment Corp’s Castle Biosciences CSTL Stock Holding History

Tudor Investment Corp’s Portfolio CSTL Stock Details CSTL Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q1 		$5.47M Buy
222,982
+55,804
+33% +$1.83M 0.01% 1115
2025
Q4 		$6.5M Buy
167,178
+81,743
+96% +$2.64M 0.01% 997
2025
Q3 		$1.95M Buy
85,435
+8,981
+12% +$182K ﹤0.01% 1825
2025
Q2 		$1.56M Sell
76,454
-94,928
-55% -$1.76M ﹤0.01% 1836
2025
Q1 		$3.43M Buy
171,382
+101,306
+145% +$2.51M 0.01% 998
2024
Q4 		$1.87M Buy
70,076
+20,586
+42% +$627K 0.01% 1310
2024
Q3 		$1.41M Buy
49,490
+15,552
+46% +$396K 0.01% 1418
2024
Q2 		$739K Buy
33,938
+20,941
+161% +$467K ﹤0.01% 1618
2024
Q1 		$288K Buy
+12,997
New +$283K ﹤0.01% 1877
2023
Q1 		– Sell
-58,903
Closed -$1.39M – 2502
2022
Q4 		$1.39M Buy
58,903
+44,665
+314% +$1.04M 0.03% 864
2022
Q3 		$371K Buy
+14,238
New +$399K 0.01% 1618
2021
Q2 		– Sell
-3,101
Closed -$212K – 1650
2021
Q1 		$212K Buy
+3,101
New +$233K ﹤0.01% 1411

Other funds holding CSTL

BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
RI
RTW Investments New York $10B AUM 135.35% 1-Year Est. Return
Principal Financial Group
Principal Financial Group Des Moines, Iowa $187B AUM 18.48% 1-Year Est. Return
PCM
Portolan Capital Management Boston, Massachusetts $1.88B AUM 115.74% 1-Year Est. Return
VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM
Dimensional Fund Advisors
Dimensional Fund Advisors Austin, Texas $481B AUM 30.42% 1-Year Est. Return
SPPAM
Summit Partners Public Asset Management Boston, Massachusetts $3.72B AUM 162.29% 1-Year Est. Return
VPM
Vanguard Portfolio Management Malvern, Pennsylvania $1.91T AUM
Allianz Asset Management
Allianz Asset Management Munich, Germany $95.4B AUM 38.74% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return

Tudor Investment Corp's CSTL Position: Q1 2026 in Review

Tudor Investment Corp increased its Castle Biosciences (CSTL) stake by 33% in Q1 2026, buying an estimated $1.83M and bringing the position to 222,982 shares worth $5.47M. The position accounts for 0.01% of the portfolio, ranked #1115.

Tudor Investment Corp first reported a position in CSTL in Q1 2021 and has held it in 12 quarters since. The position peaked at $6.5M in Q4 2025. 186 funds tracked by Wall St. Rank hold CSTL as of Q1 2026.

  • Tudor Investment Corp held 222,982 shares of Castle Biosciences worth $5.47M as of Q1 2026.
  • Tudor Investment Corp bought 55,804 Castle Biosciences shares in Q1 2026, an estimated $1.83M.
  • Castle Biosciences made up 0.01% of Tudor Investment Corp's portfolio in Q1 2026, its #1115 holding.
  • Tudor Investment Corp first reported a position in Castle Biosciences in Q1 2021 and has held it in 12 quarters since.
  • Tudor Investment Corp's Castle Biosciences position peaked at $6.5M in Q4 2025.
  • 186 funds tracked by Wall St. Rank held Castle Biosciences as of Q1 2026.

Based on Tudor Investment Corp's 13F filing for Q1 2026, filed 15 May 2026.