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Equibles

CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM

Pension

Position in CSTL — Castle Biosciences Inc

CIK 1081019 WEST SACRAMENTO, CA
Back to CSTL Full portfolio

Position in CSTL

as of Jun 30, 2026 · filed Aug 24, 2026
Position Value
$901,577
+$226,133 QoQ
Shares Held
37,802
+37.4% QoQ
Ownership
0.124%
of shares outstanding
% of Portfolio
0.00%
of 13F equity value
Holder Rank
#69
of 176 holders
Holding Since
Mar 2020
26 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

CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM holds $980,157,952 across 29 Diagnostics & Research names. CSTL ranks #25 (0.1% of the industry book) .

# Ticker Company Shares Value (USD) Open
1 TMO
Thermo Fisher Scientific Inc.
 563,776 $282,654,735
2 DHR
Danaher Corp /De/
 968,982 $184,571,691
3 IDXX
Idexx Laboratories Inc /De
 116,995 $61,590,847
4 NTRA
Natera, Inc.
 207,496 $56,324,789
5 A
Agilent Technologies, Inc.
 410,879 $54,577,057
6 WAT
Waters Corp /De/
 144,662 $54,254,036
7 IQV
Iqvia Holdings Inc.
 254,847 $49,241,537
8 ILMN
Illumina, Inc.
 228,312 $40,144,098

All Filings in CSTL

Export CSV
26 filing rows on record
Report Date Value (USD) Shares
2026-06-30 $901,577 37,802
2026-03-31 $675,444 27,513
2025-12-31 $1,078,502 27,725
2025-09-30 $560,642 24,622
2025-06-30 $502,740 24,620
2025-03-31 $492,892 24,620
2024-12-31 $656,123 24,620
2024-09-30 $706,468 24,771
2024-06-30 $553,567 25,428
2024-03-31 $564,470 25,484
2023-12-31 $577,610 26,766
2023-09-30 $470,859 27,878
2023-06-30 $419,351 30,565
2023-03-31 $654,336 28,800
2022-12-31 $687,862 29,221
2022-09-30 $753,659 28,898
2022-06-30 $637,823 29,058
2022-03-31 $1,176,094 26,217
2021-12-31 $1,225,824 28,594
2021-09-30 $1,855,749 27,906
2021-06-30 $2,153,995 29,374
2021-03-31 $1,504,203 21,972
2020-12-31 $1,201,917 17,899
2020-09-30 $913,237 17,750
2020-06-30 $582,574 15,457
2020-03-31 $429,383 14,404