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Equibles

Trexquant Investment LP

Position in CSTL — Castle Biosciences Inc

CIK 1633445 STAMFORD, CT
Back to CSTL Full portfolio

Position in CSTL

as of Jun 30, 2026 · filed Aug 14, 2026
Position Value
$4,915,747
+$1,713,593 QoQ
Shares Held
206,111
+58.0% QoQ
Ownership
0.675%
of shares outstanding
% of Portfolio
0.03%
of 13F equity value
Holder Rank
#36
of 176 holders
Holding Since
Mar 2021
14 quarters on record
Voting authority Sole 91% Shared 0% None 9%

Common Shares in CSTL Over Time

Shares Held

Position Value (USD)

Position in Diagnostics & Research

Healthcare · as of Jun 30, 2026

Trexquant Investment LP holds $147,561,727 across 14 Diagnostics & Research names. CSTL ranks #8 (3.3% of the industry book) .

# Ticker Company Shares Value (USD) Open
1 IDXX
Idexx Laboratories Inc /De
 123,380 $64,952,167
2 GH
Guardant Health, Inc.
 159,869 $23,985,146
3 A
Agilent Technologies, Inc.
 76,048 $10,101,455
4 NTRA
Natera, Inc.
 35,374 $9,602,272
5 ICLR
Icon PLC
 48,182 $8,369,695
6 PSNL
Personalis, Inc.
 600,216 $8,042,894
7 NEO
Neogenomics Inc
 435,783 $6,358,073
8 CSTL
Castle Biosciences Inc
This page 		206,111 $4,915,747

All Filings in CSTL

Export CSV
14 filing rows on record
Report Date Value (USD) Shares
2026-06-30 $4,915,747 206,111
2026-03-31 $3,202,154 130,434
2025-12-31 $2,513,134 64,605
2025-09-30 $4,063,124 178,442
2025-06-30 $6,495,030 318,072
2025-03-31 $4,984,799 248,991
2024-12-31 $5,425,167 203,571
2024-09-30 $4,552,476 159,624
2024-06-30 $928,512 42,651
2024-03-31 $996,683 44,997
2023-12-31 $247,975 11,491
2023-09-30 $196,413 11,629
2022-09-30 $824,545 31,616
2021-03-31 $477,987 6,982