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Granahan Investment Management’s Castle Biosciences CSTL Stock Holding History

Granahan Investment Management’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
2025
Q1 		– Sell
-110,824
Closed -$2.95M – 164
2024
Q4 		$2.95M Sell
110,824
-314,396
-74% -$9.58M 0.12% 137
2024
Q3 		$12.1M Sell
425,220
-633,721
-60% -$16.1M 0.48% 67
2024
Q2 		$23.1M Sell
1,058,941
-568,283
-35% -$12.7M 0.92% 29
2024
Q1 		$36M Sell
1,627,224
-539,247
-25% -$11.7M 1.27% 17
2023
Q4 		$46.8M Sell
2,166,471
-321,202
-13% -$5.65M 1.54% 15
2023
Q3 		$42M Sell
2,487,673
-41,758
-2% -$730K 1.5% 17
2023
Q2 		$34.7M Buy
2,529,431
+1,329,382
+111% +$26.9M 1.07% 24
2023
Q1 		$27.3M Buy
1,200,049
+155,721
+15% +$3.8M 0.83% 34
2022
Q4 		$24.6M Buy
1,044,328
+282,111
+37% +$6.54M 0.75% 34
2022
Q3 		$19.9M Sell
762,217
-144,547
-16% -$4.05M 0.65% 43
2022
Q2 		$19.9M Buy
906,764
+113,049
+14% +$2.63M 0.68% 37
2022
Q1 		$35.6M Buy
793,715
+56,341
+8% +$2.33M 0.88% 33
2021
Q4 		$31.6M Buy
737,374
+286,394
+64% +$15M 0.65% 38
2021
Q3 		$30M Buy
450,980
+6,351
+1% +$447K 0.57% 40
2021
Q2 		$32.6M Buy
444,629
+160,408
+56% +$10.6M 0.61% 42
2021
Q1 		$19.5M Buy
284,221
+57,233
+25% +$4.3M 0.41% 57
2020
Q4 		$15.2M Sell
226,988
-140,897
-38% -$7.64M 0.34% 69
2020
Q3 		$18.9M Buy
367,885
+92,255
+33% +$4.1M 0.64% 48
2020
Q2 		$10.4M Buy
275,630
+234,900
+577% +$8.03M 0.38% 72
2020
Q1 		$1.21M Sell
40,730
-12,133
-23% -$366K 0.07% 160
2019
Q4 		$1.82M Buy
+52,863
New +$1.29M 0.08% 142

Other funds holding CSTL

BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
Vanguard Group
Vanguard Group Malvern, Pennsylvania $6.9T AUM 27.45% 1-Year Est. Return
Principal Financial Group
Principal Financial Group Des Moines, Iowa $204B AUM 27.99% 1-Year Est. Return
PCM
Portolan Capital Management Boston, Massachusetts $2.67B AUM 169.09% 1-Year Est. Return
Dimensional Fund Advisors
Dimensional Fund Advisors Austin, Texas $552B AUM 44.19% 1-Year Est. Return
WA
Wasatch Advisors Salt Lake City, Utah $15.3B AUM 25.06% 1-Year Est. Return
Wellington Management Group
Wellington Management Group Boston, Massachusetts $580B AUM 38.23% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
Renaissance Technologies
Renaissance Technologies New York $72.6B AUM 54.88% 1-Year Est. Return
Acadian Asset Management
Acadian Asset Management Boston, Massachusetts $84.2B AUM 55.88% 1-Year Est. Return

Granahan Investment Management's CSTL Position: Q1 2025 in Review

Granahan Investment Management sold out of Castle Biosciences (CSTL) in Q1 2025, closing a stake of 110,824 shares — an estimated $2.95M sold.

Granahan Investment Management first reported a position in CSTL in Q4 2019 and held it in 21 quarters. The position peaked at $46.8M in Q4 2023. 180 funds tracked by Wall St. Rank hold CSTL as of Q1 2025.

  • Granahan Investment Management reported no remaining Castle Biosciences position as of Q1 2025 after selling out during the quarter.
  • Granahan Investment Management sold 110,824 Castle Biosciences shares in Q1 2025, an estimated $2.95M.
  • Granahan Investment Management first reported a position in Castle Biosciences in Q4 2019 and held it in 21 quarters.
  • Granahan Investment Management's Castle Biosciences position peaked at $46.8M in Q4 2023.
  • 180 funds tracked by Wall St. Rank held Castle Biosciences as of Q1 2025.

Based on Granahan Investment Management's 13F filing for Q1 2025, filed 15 May 2025.