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CSTL icon

AlphaQuest’s Castle Biosciences CSTL Stock Holding History

AlphaQuest’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 		– Sell
-17,116
Closed -$666K – 497
2025
Q4 		$666K Buy
17,116
+2,572
+18% +$82.9K 0.04% 631
2025
Q3 		$331K Buy
14,544
+12,449
+594% +$253K 0.02% 1095
2025
Q2 		$42.8K Sell
2,095
-3,913
-65% -$72.4K ﹤0.01% 1662
2025
Q1 		$120K Sell
6,008
-4,223
-41% -$105K 0.01% 1230
2024
Q4 		$273K Buy
10,231
+5,913
+137% +$180K 0.04% 743
2024
Q3 		$123K Buy
4,318
+1,522
+54% +$38.7K 0.01% 1239
2024
Q2 		$60.9K Sell
2,796
-1,232
-31% -$27.5K 0.01% 1042
2024
Q1 		$89.2K Buy
+4,028
New +$87.6K 0.02% 839

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

AlphaQuest's CSTL Position: Q1 2026 in Review

AlphaQuest sold out of Castle Biosciences (CSTL) in Q1 2026, closing a stake of 17,116 shares — an estimated $666K sold.

AlphaQuest first reported a position in CSTL in Q1 2024 and held it in 8 quarters. The position peaked at $666K in Q4 2025. 186 funds tracked by Wall St. Rank hold CSTL as of Q1 2026.

  • AlphaQuest reported no remaining Castle Biosciences position as of Q1 2026 after selling out during the quarter.
  • AlphaQuest sold 17,116 Castle Biosciences shares in Q1 2026, an estimated $666K.
  • AlphaQuest first reported a position in Castle Biosciences in Q1 2024 and held it in 8 quarters.
  • AlphaQuest's Castle Biosciences position peaked at $666K in Q4 2025.
  • 186 funds tracked by Wall St. Rank held Castle Biosciences as of Q1 2026.

Based on AlphaQuest's 13F filing for Q1 2026.