Janus Henderson Group
CSTL icon

Janus Henderson Group’s Castle Biosciences CSTL Stock Holding History

Janus Henderson Group’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 		$369K Hold
15,037
– – ﹤0.01% 2134
2025
Q4 		$585K Buy
15,037
+5,900
+65% +$190K ﹤0.01% 1952
2025
Q3 		$208K Buy
+9,137
New +$186K ﹤0.01% 2327
2025
Q1 		– Sell
-9,137
Closed -$243K – 2498
2024
Q4 		$243K Hold
9,137
– – ﹤0.01% 2351
2024
Q3 		$261K Buy
+9,137
New +$233K ﹤0.01% 2332
2024
Q2 		– Sell
-9,266
Closed -$205K – 2537
2024
Q1 		$205K Sell
9,266
-4
-0% -$87 ﹤0.01% 2411
2023
Q4 		$200K Buy
+9,270
New +$163K ﹤0.01% 2438
2023
Q2 		– Sell
-9,296
Closed -$211K – 2612
2023
Q1 		$211K Buy
+9,296
New +$227K ﹤0.01% 2469
2021
Q2 		– Sell
-46,501
Closed -$3.18M – 1621
2021
Q1 		$3.18M Buy
46,501
+18,406
+66% +$1.38M ﹤0.01% 1100
2020
Q4 		$1.89M Buy
28,095
+3,008
+12% +$163K ﹤0.01% 1132
2020
Q3 		$1.29M Buy
25,087
+4,477
+22% +$199K ﹤0.01% 1116
2020
Q2 		$777K Buy
+20,610
New +$704K ﹤0.01% 1146

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

Janus Henderson Group's CSTL Position: Q1 2026 in Review

Janus Henderson Group held its Castle Biosciences (CSTL) position steady in Q1 2026 at 15,037 shares worth $369K. The position accounts for ﹤0.01% of the portfolio, ranked #2134.

Janus Henderson Group first reported a position in CSTL in Q2 2020 and has held it in 12 quarters since. The position peaked at $3.18M in Q1 2021. 186 funds tracked by Wall St. Rank hold CSTL as of Q1 2026.

  • Janus Henderson Group held 15,037 shares of Castle Biosciences worth $369K as of Q1 2026.
  • Janus Henderson Group left its Castle Biosciences share count unchanged in Q1 2026.
  • Castle Biosciences made up ﹤0.01% of Janus Henderson Group's portfolio in Q1 2026, its #2134 holding.
  • Janus Henderson Group first reported a position in Castle Biosciences in Q2 2020 and has held it in 12 quarters since.
  • Janus Henderson Group's Castle Biosciences position peaked at $3.18M in Q1 2021.
  • 186 funds tracked by Wall St. Rank held Castle Biosciences as of Q1 2026.

Based on Janus Henderson Group's 13F filing for Q1 2026, filed 15 May 2026.