Position in CSTL
as of Mar 31, 2026
· filed May 13, 2026
Position Value
$73,231,316
-$47,562,748 QoQ
Shares Held
2,982,946
-3.9% QoQ
Ownership
9.83%
of shares outstanding
% of Portfolio
0.00%
of 13F equity value
Holder Rank
—
not a current holder
Holding Since
Sep 2024
7 quarters on record
Voting authority
Sole 96%
Shared 0%
None 4%
Common Shares in CSTL Over Time
Shares Held
Position Value (USD)
Position in Diagnostics & Research
Healthcare · as of Mar 31, 2026BlackRock, Inc. holds $53,866,454,003 across 42 Diagnostics & Research names. CSTL ranks #25 (0.1% of the industry book) .
| # | Ticker | Company | Shares | Value (USD) | Open |
|---|---|---|---|---|---|
| 1 | TMO |
Thermo Fisher Scientific Inc.
|
30,427,192 | $14,955,877,673 | |
| 2 | DHR |
Danaher Corp /De/
|
51,640,619 | $9,791,061,354 | |
| 3 | IDXX |
Idexx Laboratories Inc /De
|
8,365,553 | $4,700,520,563 | |
| 4 | A |
Agilent Technologies, Inc.
|
25,902,662 | $2,952,385,405 | |
| 5 | IQV |
Iqvia Holdings Inc.
|
15,027,444 | $2,562,780,290 | |
| 6 | WAT |
Waters Corp /De/
|
8,543,014 | $2,544,109,560 | |
| 7 | ILMN |
Illumina, Inc.
|
19,023,590 | $2,344,847,691 | |
| 8 | MTD |
Mettler Toledo International Inc/
|
1,771,002 | $2,233,587,712 |
All Filings in CSTL
Export CSV
7 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-03-31 | $73,231,316 | 2,982,946 | Shares | Sole | 2026-05-13 | |
| 2025-12-31 | $120,794,064 | 3,105,246 | Shares | Sole | 2026-02-12 | |
| 2025-09-30 | $72,633,926 | 3,189,896 | Shares | Sole | 2025-11-12 | |
| 2025-06-30 | $64,418,539 | 3,154,679 | Shares | Sole | 2025-08-12 | |
| 2025-03-31 | $59,730,464 | 2,983,540 | Shares | Sole | 2025-05-02 | |
| 2024-12-31 | $77,852,878 | 2,921,309 | Shares | Sole | 2025-02-07 | |
| 2024-09-30 | $88,990,149 | 3,120,272 | Shares | Sole | 2024-11-13 | |
| No filing history on record for this holder in this stock. | ||||||