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CSTL icon

Numerai’s Castle Biosciences CSTL Stock Holding History

Numerai’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 		$247K Buy
10,348
+2,041
+25% +$45.5K 0.02% 677
2026
Q1 		$204K Buy
+8,307
New +$272K 0.02% 719
2024
Q1 		– Sell
-43,979
Closed -$949K – 272
2023
Q4 		$949K Sell
43,979
-24,184
-35% -$426K 0.34% 96
2023
Q3 		$1.15M Buy
68,163
+963
+1% +$16.8K 0.38% 84
2023
Q2 		$922K Buy
+67,200
New +$1.36M 0.19% 113

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

Numerai's CSTL Position: Q2 2026 in Review

Numerai increased its Castle Biosciences (CSTL) stake by 25% in Q2 2026, buying an estimated $45.5K and bringing the position to 10,348 shares worth $247K. The position accounts for 0.02% of the portfolio, ranked #677.

Numerai first reported a position in CSTL in Q2 2023 and has held it in 5 quarters since. The position peaked at $1.15M in Q3 2023. 177 funds tracked by Wall St. Rank hold CSTL as of Q2 2026.

  • Numerai held 10,348 shares of Castle Biosciences worth $247K as of Q2 2026.
  • Numerai bought 2,041 Castle Biosciences shares in Q2 2026, an estimated $45.5K.
  • Castle Biosciences made up 0.02% of Numerai's portfolio in Q2 2026, its #677 holding.
  • Numerai first reported a position in Castle Biosciences in Q2 2023 and has held it in 5 quarters since.
  • Numerai's Castle Biosciences position peaked at $1.15M in Q3 2023.
  • 177 funds tracked by Wall St. Rank held Castle Biosciences as of Q2 2026.

Based on Numerai's 13F filing for Q2 2026, filed 14 Aug 2026.