Position in ICLR
as of Mar 31, 2026
· filed May 13, 2026
Position Value
$172,076
-$479,724 QoQ
Shares Held
1,555
-56.5% QoQ
Ownership
0.002%
of shares outstanding
% of Portfolio
0.01%
of 13F equity value
Holder Rank
—
not a current holder
Holding Since
Mar 2021
9 quarters on record
Voting authority
Sole 100.ToString("F0")%
Shared 0.ToString("F0")%
None 0.ToString("F0")%
Common Shares in ICLR Over Time
Shares Held
Position Value (USD)
Position in Diagnostics & Research
Healthcare · as of Mar 31, 2026GROUP ONE TRADING LLC holds $8,605,509 across 14 Diagnostics & Research names. ICLR ranks #7 (2.0% of the industry book) .
| # | Ticker | Company | Shares | Value (USD) | Open |
|---|---|---|---|---|---|
| 1 | QGEN |
Qiagen N.V.
|
71,010 | $2,843,240 | |
| 2 | ILMN |
Illumina, Inc.
|
15,677 | $1,932,347 | |
| 3 | NTRA |
Natera, Inc.
|
7,791 | $1,558,122 | |
| 4 | TMO |
Thermo Fisher Scientific Inc.
|
2,409 | $1,184,095 | |
| 5 | DHR |
Danaher Corp /De/
|
2,960 | $561,216 | |
| 6 | DGX |
Quest Diagnostics Inc
|
961 | $188,336 | |
| 7 | ICLR |
Icon PLC
This page
|
1,555 | $172,076 | |
| 8 | TWST |
Twist Bioscience Corp
|
1,522 | $72,325 |
All Filings in ICLR
Export CSV
9 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-03-31 | $172,076 | 1,555 | Shares | Sole | 2026-05-13 | |
| 2025-12-31 | $651,800 | 3,577 | Shares | Sole | 2026-02-12 | |
| 2025-03-31 | $560,317 | 3,202 | Shares | Sole | 2025-05-14 | |
| 2024-12-31 | $5,662 | 27 | Shares | Sole | 2025-05-14 | |
| 2024-09-30 | $61,197 | 213 | Shares | Sole | 2024-11-14 | |
| 2024-06-30 | $62,694 | 200 | Shares | Sole | 2024-08-14 | |
| 2021-12-31 | $522,773 | 1,688 | Shares | Sole | 2022-02-11 | |
| 2021-06-30 | $2,852,598 | 13,800 | Shares | Sole | 2021-08-10 | |
| 2021-03-31 | $746,206 | 3,800 | Shares | Sole | 2021-05-12 | |
| No filing history on record for this holder in this stock. | ||||||