BL
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BFSG LLC’s Castle Biosciences CSTL Stock Holding History

BFSG LLC’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 		$2.21K Hold
90
– – ﹤0.01% 666
2025
Q4 		$3.5K Hold
90
– – ﹤0.01% 614
2025
Q3 		$2.05K Hold
90
– – ﹤0.01% 641
2025
Q2 		$1.84K Hold
90
– – ﹤0.01% 614
2025
Q1 		$1.8K Hold
90
– – ﹤0.01% 610
2024
Q4 		$2.4K Hold
90
– – ﹤0.01% 602
2024
Q3 		$2.57K Hold
90
– – ﹤0.01% 579
2024
Q2 		$1.96K Hold
90
– – ﹤0.01% 577
2024
Q1 		$1.99K Hold
90
– – ﹤0.01% 591
2023
Q4 		$1.94K Buy
+90
New +$1.58K ﹤0.01% 545

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

BFSG LLC's CSTL Position: Q1 2026 in Review

BFSG LLC held its Castle Biosciences (CSTL) position steady in Q1 2026 at 90 shares worth $2.21K. The position accounts for ﹤0.01% of the portfolio, ranked #666.

BFSG LLC first reported a position in CSTL in Q4 2023 and has held it in 10 quarters since. The position peaked at $3.5K in Q4 2025. 186 funds tracked by Wall St. Rank hold CSTL as of Q1 2026.

  • BFSG LLC held 90 shares of Castle Biosciences worth $2.21K as of Q1 2026.
  • BFSG LLC left its Castle Biosciences share count unchanged in Q1 2026.
  • Castle Biosciences made up ﹤0.01% of BFSG LLC's portfolio in Q1 2026, its #666 holding.
  • BFSG LLC first reported a position in Castle Biosciences in Q4 2023 and has held it in 10 quarters since.
  • BFSG LLC's Castle Biosciences position peaked at $3.5K in Q4 2025.
  • 186 funds tracked by Wall St. Rank held Castle Biosciences as of Q1 2026.

Based on BFSG LLC's 13F filing for Q1 2026, filed 29 Apr 2026.