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Equibles

FMR LLC

Position in CSTL — Castle Biosciences Inc

CIK 315066 BOSTON, MA
Back to CSTL Full portfolio

Position in CSTL

as of Jun 30, 2026 · filed Aug 13, 2026
Position Value
$1,332,522
+$94,909 QoQ
Shares Held
55,871
+10.8% QoQ
Ownership
0.183%
of shares outstanding
% of Portfolio
0.00%
of 13F equity value
Holder Rank
#61
of 176 holders
Holding Since
Jun 2020
24 quarters on record
Voting authority Sole 99% Shared 0% None 1%

Common Shares in CSTL Over Time

Shares Held

Position Value (USD)

Position in Diagnostics & Research

Healthcare · as of Jun 30, 2026

FMR LLC holds $20,923,751,494 across 34 Diagnostics & Research names. CSTL ranks #24 (0.0% of the industry book) .

# Ticker Company Shares Value (USD) Open
1 TMO
Thermo Fisher Scientific Inc.
 14,084,488 $7,061,398,899
2 DHR
Danaher Corp /De/
 29,540,895 $5,626,949,677
3 NTRA
Natera, Inc.
 5,451,396 $1,479,781,442
4 CRL
Charles River Laboratories International, Inc.
 4,239,752 $961,533,354
5 ICLR
Icon PLC
 5,271,321 $915,681,168
6 GH
Guardant Health, Inc.
 5,488,272 $823,405,446
7 ILMN
Illumina, Inc.
 4,523,417 $795,352,409
8 A
Agilent Technologies, Inc.
 5,076,167 $674,267,260

All Filings in CSTL

Export CSV
24 filing rows on record
Report Date Value (USD) Shares
2026-06-30 $1,332,522 55,871
2026-03-31 $1,237,613 50,412
2025-12-31 $1,644,924 42,286
2025-09-30 $649,900 28,542
2025-06-30 $490,079 24,000
2025-03-31 $23,142 1,156
2024-12-31 $28,808 1,081
2024-09-30 $29,033 1,018
2024-06-30 $26,558 1,220
2024-03-31 $19,314 872
2023-12-31 $20,392 945
2023-09-30 $17,058 1,010
2023-06-30 $9,068 661
2023-03-31 $16,198 713
2022-12-31 $18,219 774
2022-09-30 $20,368 781
2022-06-30 $12,225 557
2022-03-31 $20,231 451
2021-09-30 $132 2
2021-06-30 $292 4
2021-03-31 $22,950,872 335,245
2020-12-31 $39,145,158 582,951
2020-09-30 $21,399,289 415,924
2020-06-30 $11,437,708 303,468