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Equibles

VANGUARD FIDUCIARY TRUST CO

Bank

Position in CSTL — Castle Biosciences Inc

CIK 933478 MALVERN, PA
Back to CSTL Full portfolio

Position in CSTL

as of Jun 30, 2026 · filed Aug 13, 2026
Position Value
$4,710,231
+$89,651 QoQ
Shares Held
197,494
+4.9% QoQ
Ownership
0.646%
of shares outstanding
% of Portfolio
0.00%
of 13F equity value
Holder Rank
#38
of 176 holders
Holding Since
Mar 2026
2 quarters on record
Voting authority Sole 100% Shared 0% None 0%

Common Shares in CSTL Over Time

Shares Held

Position Value (USD)

Position in Diagnostics & Research

Healthcare · as of Jun 30, 2026

VANGUARD FIDUCIARY TRUST CO holds $3,959,172,049 across 37 Diagnostics & Research names. CSTL ranks #26 (0.1% of the industry book) .

# Ticker Company Shares Value (USD) Open
1 TMO
Thermo Fisher Scientific Inc.
 2,086,585 $1,046,130,255
2 DHR
Danaher Corp /De/
 3,542,608 $674,795,971
3 NTRA
Natera, Inc.
 918,609 $249,356,413
4 IDXX
Idexx Laboratories Inc /De
 451,663 $237,773,469
5 A
Agilent Technologies, Inc.
 1,586,411 $210,722,973
6 WAT
Waters Corp /De/
 551,398 $206,796,305
7 IQV
Iqvia Holdings Inc.
 937,344 $181,113,607
8 ILMN
Illumina, Inc.
 951,296 $167,266,375

All Filings in CSTL

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2 filing rows on record
Report Date Value (USD) Shares
2026-06-30 $4,710,231 197,494
2026-03-31 $4,620,580 188,211