Position in CSTL
as of Mar 31, 2026
· filed May 14, 2026
Position Value
$13,080,240
-$6,101,350 QoQ
Shares Held
532,800
+8.1% QoQ
Ownership
1.76%
of shares outstanding
% of Portfolio
0.02%
of 13F equity value
Holder Rank
—
not a current holder
Holding Since
Mar 2020
22 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, 2026RENAISSANCE TECHNOLOGIES LLC holds $770,315,587 across 28 Diagnostics & Research names. CSTL ranks #10 (1.7% of the industry book) .
| # | Ticker | Company | Shares | Value (USD) | Open |
|---|---|---|---|---|---|
| 1 | MEDP |
Medpace Holdings, Inc.
|
504,668 | $242,336,526 | |
| 2 | DHR |
Danaher Corp /De/
|
678,808 | $128,701,996 | |
| 3 | ILMN |
Illumina, Inc.
|
972,642 | $119,887,852 | |
| 4 | TMO |
Thermo Fisher Scientific Inc.
|
138,964 | $68,304,974 | |
| 5 | NTRA |
Natera, Inc.
|
197,500 | $39,498,025 | |
| 6 | A |
Agilent Technologies, Inc.
|
300,300 | $34,228,194 | |
| 7 | GH |
Guardant Health, Inc.
|
337,600 | $31,184,112 | |
| 8 | IDXX |
Idexx Laboratories Inc /De
|
48,504 | $27,253,912 |
All Filings in CSTL
Export CSV
22 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-03-31 | $13,080,240 | 532,800 | Shares | Sole | 2026-05-14 | |
| 2025-12-31 | $19,181,590 | 493,100 | Shares | Sole | 2026-02-12 | |
| 2025-09-30 | $12,810,402 | 562,600 | Shares | Sole | 2025-11-13 | |
| 2025-06-30 | $13,691,610 | 670,500 | Shares | Sole | 2025-08-13 | |
| 2025-03-31 | $14,038,024 | 701,200 | Shares | Sole | 2025-05-14 | |
| 2024-12-31 | $18,255,250 | 685,000 | Shares | Sole | 2025-02-13 | |
| 2024-09-30 | $13,962,308 | 489,562 | Shares | Sole | 2024-11-13 | |
| 2024-06-30 | $6,563,655 | 301,500 | Shares | Sole | 2024-08-09 | |
| 2024-03-31 | $4,534,105 | 204,700 | Shares | Sole | 2024-05-13 | |
| 2023-12-31 | $2,425,592 | 112,400 | Shares | Sole | 2024-02-13 | |
| 2023-09-30 | $1,803,852 | 106,800 | Shares | Sole | 2023-11-14 | |
| 2023-06-30 | $2,365,328 | 172,400 | Shares | Sole | 2023-08-11 | |
| 2023-03-31 | $827,008 | 36,400 | Shares | Sole | 2023-05-12 | |
| 2022-12-31 | $520,234 | 22,100 | Shares | Sole | 2023-02-13 | |
| 2022-09-30 | $443,360 | 17,000 | Shares | Sole | 2022-11-14 | |
| 2022-06-30 | $381,930 | 17,400 | Shares | Sole | 2022-08-12 | |
| 2022-03-31 | $1,121,500 | 25,000 | Shares | Sole | 2022-05-13 | |
| 2021-12-31 | $5,756,626 | 134,281 | Shares | Sole | 2022-02-11 | |
| 2021-03-31 | $1,882,650 | 27,500 | Shares | Sole | 2021-05-13 | |
| 2020-09-30 | $200,655 | 3,900 | Shares | Sole | 2020-11-13 | |
| 2020-06-30 | $1,614,488 | 42,836 | Shares | Sole | 2020-08-13 | |
| 2020-03-31 | $989,692 | 33,200 | Shares | Sole | 2020-05-14 | |
| No filing history on record for this holder in this stock. | ||||||