Position in FONR
as of Dec 31, 2025
· filed Feb 12, 2026
Position Value
$5,859,688
+$1,211,932 QoQ
Shares Held
315,716
+2.3% QoQ
Ownership
45.4%
of shares outstanding
% of Portfolio
0.01%
of 13F equity value
Holder Rank
—
not a current holder
Holding Since
Mar 2020
24 quarters on record
Voting authority
Sole 100%
Shared 0%
None 0%
Common Shares in FONR 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.
| # | 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 FONR
Export CSV
26 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2025-12-31 | $5,859,688 | 315,716 | Shares | Sole | 2026-02-12 | |
| 2025-12-04 | $4,625,239 | 315,716 | Shares | Sole | 2026-02-12 | |
| 2025-09-30 | $4,647,756 | 308,616 | Shares | Sole | 2025-11-13 | |
| 2025-06-30 | $4,720,119 | 315,516 | Shares | Sole | 2025-08-13 | |
| 2025-05-19 | $4,262,621 | 315,516 | Shares | Sole | 2025-08-13 | |
| 2025-03-31 | $4,264,868 | 304,416 | Shares | Sole | 2025-05-14 | |
| 2024-12-31 | $4,749,660 | 313,716 | Shares | Sole | 2025-02-13 | |
| 2024-09-30 | $5,399,624 | 333,516 | Shares | Sole | 2024-11-13 | |
| 2024-06-30 | $5,507,456 | 344,216 | Shares | Sole | 2024-08-09 | |
| 2024-03-31 | $6,596,843 | 308,841 | Shares | Sole | 2024-05-13 | |
| 2023-12-31 | $5,929,359 | 303,137 | Shares | Sole | 2024-02-13 | |
| 2023-09-30 | $4,741,906 | 307,916 | Shares | Sole | 2023-11-14 | |
| 2023-06-30 | $5,465,433 | 319,616 | Shares | Sole | 2023-08-11 | |
| 2023-03-31 | $5,326,819 | 328,816 | Shares | Sole | 2023-05-12 | |
| 2022-12-31 | $5,668,468 | 338,416 | Shares | Sole | 2023-02-13 | |
| 2022-09-30 | $4,890,466 | 345,616 | Shares | Sole | 2022-11-14 | |
| 2022-06-30 | $5,813,456 | 382,716 | Shares | Sole | 2022-08-12 | |
| 2022-03-31 | $7,162,451 | 386,116 | Shares | Sole | 2022-05-13 | |
| 2021-12-31 | $6,061,147 | 404,616 | Shares | Sole | 2022-02-11 | |
| 2021-09-30 | $6,675,875 | 431,816 | Shares | Sole | 2021-11-12 | |
| 2021-06-30 | $8,659,946 | 489,816 | Shares | Sole | 2021-08-13 | |
| 2021-03-31 | $8,915,041 | 492,816 | Shares | Sole | 2021-05-13 | |
| 2020-12-31 | $8,560,493 | 493,116 | Shares | Sole | 2021-02-10 | |
| 2020-09-30 | $9,452,710 | 452,716 | Shares | Sole | 2020-11-13 | |
| 2020-06-30 | $10,161,242 | 475,491 | Shares | Sole | 2020-08-13 | |
| 2020-03-31 | $7,444,737 | 509,216 | Shares | Sole | 2020-05-14 | |
| No filing history on record for this holder in this stock. | ||||||