Harbor Capital Advisors
CSTL icon

Harbor Capital Advisors’s Castle Biosciences CSTL Stock Holding History

Harbor Capital Advisors’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
Q3 		$926K Sell
26,072
-5,676
-18% -$171K 0.06% 360
2026
Q2 		$757K Buy
31,748
+6,134
+24% +$137K 0.05% 427
2026
Q1 		$629K Buy
25,614
+12,182
+91% +$399K 0.05% 437
2025
Q4 		$523K Buy
13,432
+261
+2% +$8.41K 0.04% 472
2025
Q3 		$300K Sell
13,171
-7,228
-35% -$147K 0.02% 569
2025
Q2 		$417K Buy
20,399
+3,804
+23% +$70.4K 0.02% 547
2025
Q1 		$332K Sell
16,595
-101,905
-86% -$2.52M 0.02% 574
2024
Q4 		$3.16M Sell
118,500
-35,407
-23% -$1.08M 0.14% 207
2024
Q3 		$4.39M Buy
153,907
+15,200
+11% +$387K 0.19% 163
2024
Q2 		$3.02M Buy
138,707
+99,001
+249% +$2.21M 0.23% 127
2024
Q1 		$879K Buy
39,706
+27,754
+232% +$604K 0.11% 246
2023
Q4 		$258K Buy
11,952
+2,205
+23% +$38.8K 0.05% 334
2023
Q3 		$165K Sell
9,747
-4,517
-32% -$79K 0.04% 370
2023
Q2 		$196K Buy
+14,264
New +$289K 0.04% 366

Other funds holding CSTL

Principal Financial Group
Principal Financial Group Des Moines, Iowa $195B AUM 21.17% 1-Year Est. Return
Acadian Asset Management
Acadian Asset Management Boston, Massachusetts $85.7B AUM 51.02% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.92T AUM 36.1% 1-Year Est. Return
Dimensional Fund Advisors
Dimensional Fund Advisors Austin, Texas $551B AUM 33.95% 1-Year Est. Return
Jefferies Financial Group
Jefferies Financial Group New York $13.5B AUM 36.68% 1-Year Est. Return
Mackenzie Financial
Mackenzie Financial Toronto Ontario, Ontario, Canada $91.6B AUM 30% 1-Year Est. Return
Connor, Clark & Lunn Investment Management (CC&L)
Connor, Clark & Lunn Investment Management (CC&L) Vancouver, British Columbia, Canada $57.2B AUM 42.49% 1-Year Est. Return
Wasatch Advisors
Wasatch Advisors Salt Lake City, Utah $13.5B AUM 16.58% 1-Year Est. Return
Kornitzer Capital Management
Kornitzer Capital Management Shawnee Mission, Kansas $4.8B AUM 30.14% 1-Year Est. Return
Allspring Global Investments
Allspring Global Investments Charlotte, North Carolina $64.1B AUM 28.9% 1-Year Est. Return

Harbor Capital Advisors's CSTL Position: Q3 2026 in Review

Harbor Capital Advisors reduced its Castle Biosciences (CSTL) stake by 18% in Q3 2026, selling an estimated $171K and leaving 26,072 shares worth $926K. The position accounts for 0.06% of the portfolio, ranked #360.

Harbor Capital Advisors first reported a position in CSTL in Q2 2023 and has held it in 14 quarters since. The position peaked at $4.39M in Q3 2024. 94 funds tracked by Wall St. Rank hold CSTL as of Q3 2026.

  • Harbor Capital Advisors held 26,072 shares of Castle Biosciences worth $926K as of Q3 2026.
  • Harbor Capital Advisors sold 5,676 Castle Biosciences shares in Q3 2026, an estimated $171K.
  • Castle Biosciences made up 0.06% of Harbor Capital Advisors's portfolio in Q3 2026, its #360 holding.
  • Harbor Capital Advisors first reported a position in Castle Biosciences in Q2 2023 and has held it in 14 quarters since.
  • Harbor Capital Advisors's Castle Biosciences position peaked at $4.39M in Q3 2024.
  • 94 funds tracked by Wall St. Rank held Castle Biosciences as of Q3 2026.

Based on Harbor Capital Advisors's 13F filing for Q3 2026, filed 22 Oct 2026.