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Quantbot Technologies’s Castle Biosciences CSTL Stock Holding History

Quantbot Technologies’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
Q2 		$62K Sell
2,599
-19,461
-88% -$433K ﹤0.01% 1588
2026
Q1 		$542K Buy
22,060
+22,013
+46,836% +$721K 0.02% 825
2025
Q4 		$1.83K Buy
+47
New +$1.51K ﹤0.01% 1638
2025
Q2 		– Sell
-15,287
Closed -$306K – 1671
2025
Q1 		$306K Buy
+15,287
New +$378K 0.01% 1029
2023
Q3 		– Sell
-12,941
Closed -$178K – 1606
2023
Q2 		$178K Buy
12,941
+10,396
+408% +$211K 0.01% 1008
2023
Q1 		$57.8K Sell
2,545
-5,329
-68% -$130K ﹤0.01% 1224
2022
Q4 		$185K Sell
7,874
-4,869
-38% -$113K 0.01% 923
2022
Q3 		$332K Sell
12,743
-2,818
-18% -$79K 0.03% 716
2022
Q2 		$341K Buy
+15,561
New +$362K 0.03% 727
2022
Q1 		– Sell
-3,081
Closed -$132K – 1704
2021
Q4 		$132K Sell
3,081
-6,517
-68% -$341K 0.01% 820
2021
Q3 		$638K Buy
9,598
+5,617
+141% +$395K 0.05% 517
2021
Q2 		$291K Buy
+3,981
New +$263K 0.02% 670
2020
Q4 		– Sell
-200
Closed -$10K – 1359
2020
Q3 		$10K Buy
+200
New +$8.9K ﹤0.01% 1114

Other funds holding CSTL

BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
RI
RTW Investments New York $11.7B AUM 174.13% 1-Year Est. Return
Principal Financial Group
Principal Financial Group Des Moines, Iowa $204B AUM 27.99% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
Acadian Asset Management
Acadian Asset Management Boston, Massachusetts $84.2B AUM 55.88% 1-Year Est. Return
Allianz Asset Management
Allianz Asset Management Munich, Germany $123B AUM 45.23% 1-Year Est. Return
Vanguard Portfolio Management
Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM
SPPAM
Summit Partners Public Asset Management Boston, Massachusetts $5.69B AUM 259.25% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return

Quantbot Technologies's CSTL Position: Q2 2026 in Review

Quantbot Technologies reduced its Castle Biosciences (CSTL) stake by 88% in Q2 2026, selling an estimated $433K and leaving 2,599 shares worth $62K. The position accounts for ﹤0.01% of the portfolio, ranked #1588.

Quantbot Technologies first reported a position in CSTL in Q3 2020 and has held it in 13 quarters since. The position peaked at $638K in Q3 2021. 177 funds tracked by Wall St. Rank hold CSTL as of Q2 2026.

  • Quantbot Technologies held 2,599 shares of Castle Biosciences worth $62K as of Q2 2026.
  • Quantbot Technologies sold 19,461 Castle Biosciences shares in Q2 2026, an estimated $433K.
  • Castle Biosciences made up ﹤0.01% of Quantbot Technologies's portfolio in Q2 2026, its #1588 holding.
  • Quantbot Technologies first reported a position in Castle Biosciences in Q3 2020 and has held it in 13 quarters since.
  • Quantbot Technologies's Castle Biosciences position peaked at $638K in Q3 2021.
  • 177 funds tracked by Wall St. Rank held Castle Biosciences as of Q2 2026.

Based on Quantbot Technologies's 13F filing for Q2 2026, filed 12 Aug 2026.