Bank of America
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Bank of America’s Castle Biosciences CSTL Stock Holding History

Bank of America’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 		$1.66M Sell
67,810
-195,209
-74% -$6.39M ﹤0.01% 4227
2025
Q4 		$10.2M Sell
263,019
-52,351
-17% -$1.69M ﹤0.01% 2835
2025
Q3 		$7.18M Sell
315,370
-67,375
-18% -$1.37M ﹤0.01% 3650
2025
Q2 		$7.82M Buy
382,745
+7,365
+2% +$136K ﹤0.01% 3446
2025
Q1 		$7.52M Sell
375,380
-28,173
-7% -$698K ﹤0.01% 3427
2024
Q4 		$10.8M Buy
403,553
+201,806
+100% +$6.15M ﹤0.01% 2872
2024
Q3 		$5.75M Buy
201,747
+122,135
+153% +$3.11M ﹤0.01% 3606
2024
Q2 		$1.73M Sell
79,612
-71,553
-47% -$1.59M ﹤0.01% 4542
2024
Q1 		$3.35M Buy
151,165
+12,587
+9% +$274K ﹤0.01% 4009
2023
Q4 		$2.99M Buy
138,578
+95,855
+224% +$1.69M ﹤0.01% 4007
2023
Q3 		$722K Sell
42,723
-1,918
-4% -$33.5K ﹤0.01% 5049
2023
Q2 		$612K Sell
44,641
-12,521
-22% -$254K ﹤0.01% 5130
2023
Q1 		$1.3M Buy
57,162
+8,205
+17% +$200K ﹤0.01% 4723
2022
Q4 		$1.15M Sell
48,957
-76,117
-61% -$1.76M ﹤0.01% 4730
2022
Q3 		$3.26M Buy
125,074
+79,149
+172% +$2.22M ﹤0.01% 3801
2022
Q2 		$1.01M Buy
45,925
+8,915
+24% +$207K ﹤0.01% 4900
2022
Q1 		$1.66M Sell
37,010
-1,791
-5% -$74K ﹤0.01% 4771
2021
Q4 		$1.66M Buy
38,801
+17,827
+85% +$932K ﹤0.01% 4746
2021
Q3 		$1.39M Sell
20,974
-1,729
-8% -$122K ﹤0.01% 4770
2021
Q2 		$1.66M Buy
22,703
+2,736
+14% +$181K ﹤0.01% 4478
2021
Q1 		$1.37M Buy
19,967
+1,647
+9% +$124K ﹤0.01% 4560
2020
Q4 		$1.23M Buy
18,320
+14,497
+379% +$786K ﹤0.01% 4328
2020
Q3 		$197K Sell
3,823
-2,086
-35% -$92.8K ﹤0.01% 5306
2020
Q2 		$222K Buy
5,909
+3,496
+145% +$119K ﹤0.01% 5167
2020
Q1 		$72K Sell
2,413
-1,946
-45% -$58.7K ﹤0.01% 5701
2019
Q4 		$150K Buy
4,359
+2,604
+148% +$63.7K ﹤0.01% 5792
2019
Q3 		$32K Buy
+1,755
New +$38.9K ﹤0.01% 6466

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

Bank of America's CSTL Position: Q1 2026 in Review

Bank of America reduced its Castle Biosciences (CSTL) stake by 74% in Q1 2026, selling an estimated $6.39M and leaving 67,810 shares worth $1.66M. The position accounts for ﹤0.01% of the portfolio, ranked #4227.

Bank of America first reported a position in CSTL in Q3 2019 and has held it in 27 quarters since. The position peaked at $10.8M in Q4 2024. 186 funds tracked by Wall St. Rank hold CSTL as of Q1 2026.

  • Bank of America held 67,810 shares of Castle Biosciences worth $1.66M as of Q1 2026.
  • Bank of America sold 195,209 Castle Biosciences shares in Q1 2026, an estimated $6.39M.
  • Castle Biosciences made up ﹤0.01% of Bank of America's portfolio in Q1 2026, its #4227 holding.
  • Bank of America first reported a position in Castle Biosciences in Q3 2019 and has held it in 27 quarters since.
  • Bank of America's Castle Biosciences position peaked at $10.8M in Q4 2024.
  • 186 funds tracked by Wall St. Rank held Castle Biosciences as of Q1 2026.

Based on Bank of America's 13F filing for Q1 2026, filed 18 May 2026.