Position in XGN
as of Mar 31, 2026
· filed May 15, 2026
Position Value
$693,345
-$452,479 QoQ
Shares Held
231,115
+22.6% QoQ
Ownership
0.957%
of shares outstanding
% of Portfolio
0.00%
of 13F equity value
Holder Rank
—
not a current holder
Holding Since
Mar 2022
13 quarters on record
Voting authority
Sole 100%
Shared 0%
None 0%
Common Shares in XGN Over Time
Shares Held
Position Value (USD)
Derivatives in XGN
reported options exposure · as of Dec 31, 2025CallValue
$114,912
CallShares
18,900
PutValue
$0
PutShares
0
Notional value of option positions as reported on Form 13F. Calls and puts are disclosed separately and do not net against the common-share stake above.
Position in Diagnostics & Research
Healthcare · as of Mar 31, 2026CITADEL ADVISORS LLC holds $1,652,977,225 across 34 Diagnostics & Research names. XGN ranks #29 (0.0% of the industry book) .
| # | Ticker | Company | Shares | Value (USD) | Open |
|---|---|---|---|---|---|
| 1 | TMO |
Thermo Fisher Scientific Inc.
|
864,489 | $424,922,277 | |
| 2 | CRL |
Charles River Laboratories International, Inc.
|
1,212,152 | $209,096,220 | |
| 3 | A |
Agilent Technologies, Inc.
|
1,801,714 | $205,359,361 | |
| 4 | DHR |
Danaher Corp /De/
|
1,026,347 | $194,595,390 | |
| 5 | MTD |
Mettler Toledo International Inc/
|
58,054 | $73,217,704 | |
| 6 | GH |
Guardant Health, Inc.
|
775,941 | $71,673,669 | |
| 7 | DGX |
Quest Diagnostics Inc
|
347,218 | $68,047,783 | |
| 8 | IQV |
Iqvia Holdings Inc.
|
390,042 | $66,517,762 |
All Filings in XGN
Export CSV
29 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-03-31 | $693,345 | 231,115 | Shares | Defined | 2026-05-15 | |
| 2025-12-31 | $1,145,824 | 188,458 | Shares | Defined | 2026-02-17 | |
| 2025-12-31 | $114,912 | 18,900 | Call | Defined | 2026-02-17 | |
| 2025-09-30 | $1,277,366 | 116,230 | Shares | Defined | 2025-11-14 | |
| 2025-09-30 | $152,761 | 13,900 | Call | Defined | 2025-11-14 | |
| 2025-03-31 | $66,056 | 18,400 | Put | Defined | 2025-05-15 | |
| 2025-03-31 | $12,206 | 3,400 | Call | Defined | 2025-05-15 | |
| 2025-03-31 | $15,379 | 4,284 | Shares | Defined | 2025-05-15 | |
| 2024-12-31 | $26,240 | 6,400 | Put | Defined | 2025-02-14 | |
| 2024-12-31 | $4,510 | 1,100 | Call | Defined | 2025-02-14 | |
| 2024-12-31 | $91,630 | 22,349 | Shares | Defined | 2025-02-14 | |
| 2024-09-30 | $1,236 | 400 | Put | Defined | 2024-11-14 | |
| 2024-09-30 | $13,905 | 4,500 | Call | Defined | 2024-11-14 | |
| 2024-09-30 | $71,097 | 23,009 | Shares | Defined | 2024-11-14 | |
| 2024-06-30 | $46,189 | 25,379 | Shares | Defined | 2024-08-14 | |
| 2024-06-30 | $4,550 | 2,500 | Call | Defined | 2024-08-14 | |
| 2024-06-30 | $364 | 200 | Put | Defined | 2024-08-14 | |
| 2024-03-31 | $11,511 | 7,240 | Shares | Defined | 2024-05-15 | |
| 2024-03-31 | $2,544 | 1,600 | Call | Defined | 2024-05-15 | |
| 2024-03-31 | $6,519 | 4,100 | Put | Defined | 2024-05-15 | |
| 2023-12-31 | $41,262 | 20,735 | Shares | Defined | 2024-02-14 | |
| 2023-12-31 | $199 | 100 | Call | Defined | 2024-02-14 | |
| 2023-12-31 | $398 | 200 | Put | Defined | 2024-02-14 | |
| 2023-03-31 | $17,496 | 7,200 | Put | Defined | 2023-05-15 | |
| 2023-03-31 | $11,664 | 4,800 | Call | Defined | 2023-05-15 | |
| 2022-09-30 | $258,805 | 95,500 | Call | Defined | 2022-11-14 | |
| 2022-06-30 | $754,810 | 131,500 | Call | Defined | 2022-08-15 | |
| 2022-06-30 | $160,696 | 27,996 | Shares | Defined | 2022-08-15 | |
| 2022-03-31 | $873,664 | 108,800 | Call | Defined | 2022-05-16 | |
| No filing history on record for this holder in this stock. | ||||||