Position in CSTL
as of Mar 31, 2026
· filed May 15, 2026
Position Value
$6,264,767
-$3,340,421 QoQ
Shares Held
255,184
+3.3% QoQ
Ownership
0.841%
of shares outstanding
% of Portfolio
0.13%
of 13F equity value
Holder Rank
—
not a current holder
Holding Since
Jun 2025
4 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 Mar 31, 2026BRIDGEWAY CAPITAL MANAGEMENT, LLC holds $13,530,506 across 6 Diagnostics & Research names. CSTL ranks #1 (46.3% of the industry book) .
| # | Ticker | Company | Shares | Value (USD) | Open |
|---|---|---|---|---|---|
| 1 | CSTL |
Castle Biosciences Inc
This page
|
255,184 | $6,264,767 | |
| 2 | ILMN |
Illumina, Inc.
|
26,900 | $3,315,694 | |
| 3 | IDXX |
Idexx Laboratories Inc /De
|
3,860 | $2,168,895 | |
| 4 | MEDP |
Medpace Holdings, Inc.
|
2,830 | $1,358,937 | |
| 5 | XGN |
Exagen Inc.
|
87,402 | $262,206 | |
| 6 | BDSX |
Biodesix Inc
|
11,035 | $160,007 |
All Filings in CSTL
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4 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-03-31 | $6,264,767 | 255,184 | Shares | Sole | 2026-05-15 | |
| 2025-12-31 | $9,605,188 | 246,920 | Shares | Sole | 2026-02-17 | |
| 2025-09-30 | $4,034,388 | 177,180 | Shares | Sole | 2025-11-14 | |
| 2025-06-30 | $832,115 | 40,750 | Shares | Sole | 2025-08-14 | |
| No filing history on record for this holder in this stock. | ||||||