Position in CSTL
as of Jun 30, 2026
· filed Aug 7, 2026
Position Value
$757,189
+$128,366 QoQ
Shares Held
31,748
+23.9% QoQ
Ownership
0.104%
of shares outstanding
% of Portfolio
0.06%
of 13F equity value
Holder Rank
#72
of 176 holders
Holding Since
Jun 2023
13 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, 2026HARBOR CAPITAL ADVISORS, INC. holds $17,367,922 across 10 Diagnostics & Research names. CSTL ranks #5 (4.4% of the industry book) .
| # | Ticker | Company | Shares | Value (USD) | Open |
|---|---|---|---|---|---|
| 1 | RDNT |
RadNet, Inc.
|
116,506 | $7,184,925 | |
| 2 | NEO |
Neogenomics Inc
|
223,846 | $3,265,913 | |
| 3 | VCYT |
Veracyte, Inc.
|
52,337 | $3,073,752 | |
| 4 | DGX |
Quest Diagnostics Inc
|
4,281 | $907,357 | |
| 5 | CSTL |
Castle Biosciences Inc
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|
31,748 | $757,189 | |
| 6 | GRAL |
GRAIL, Inc.
|
8,696 | $593,675 | |
| 7 | MYGN |
Myriad Genetics Inc
|
97,375 | $556,011 | |
| 8 | IQV |
Iqvia Holdings Inc.
|
2,831 | $547,005 |
All Filings in CSTL
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13 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-06-30 | $757,189 | 31,748 | Shares | Sole | 2026-08-07 | |
| 2026-03-31 | $628,823 | 25,614 | Shares | Sole | 2026-04-28 | |
| 2025-12-31 | $522,504 | 13,432 | Shares | Sole | 2026-01-20 | |
| 2025-09-30 | $299,903 | 13,171 | Shares | Sole | 2025-10-15 | |
| 2025-06-30 | $416,547 | 20,399 | Shares | Sole | 2025-07-09 | |
| 2025-03-31 | $332,231 | 16,595 | Shares | Sole | 2025-04-14 | |
| 2024-12-31 | $3,158,025 | 118,500 | Shares | Sole | 2025-01-10 | |
| 2024-09-30 | $4,389,427 | 153,907 | Shares | Sole | 2024-10-29 | |
| 2024-06-30 | $3,019,651 | 138,707 | Shares | Sole | 2024-07-09 | |
| 2024-03-31 | $879,487 | 39,706 | Shares | Sole | 2024-05-13 | |
| 2023-12-31 | $257,924 | 11,952 | Shares | Sole | 2024-01-08 | |
| 2023-09-30 | $164,626 | 9,747 | Shares | Sole | 2023-10-20 | |
| 2023-06-30 | $195,702 | 14,264 | Shares | Sole | 2023-07-11 | |
| No filing history on record for this holder in this stock. | ||||||