Position in NEO
as of Mar 31, 2026
· filed May 15, 2026
Position Value
$1,956,987
-$13,418,871 QoQ
Shares Held
263,745
-79.8% QoQ
Ownership
0.203%
of shares outstanding
% of Portfolio
0.00%
of 13F equity value
Holder Rank
—
not a current holder
Holding Since
Mar 2020
25 quarters on record
Voting authority
Sole 100%
Shared 0%
None 0%
Common Shares in NEO Over Time
Shares Held
Position Value (USD)
Derivatives in NEO
reported options exposure · as of Mar 31, 2026CallValue
$555,758
CallShares
74,900
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. NEO ranks #23 (0.1% 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 NEO
Export CSV
50 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-03-31 | $1,956,987 | 263,745 | Shares | Defined | 2026-05-15 | |
| 2026-03-31 | $555,758 | 74,900 | Call | Defined | 2026-05-15 | |
| 2025-12-31 | $15,375,858 | 1,307,471 | Shares | Defined | 2026-02-17 | |
| 2025-12-31 | $1,265,376 | 107,600 | Put | Defined | 2026-02-17 | |
| 2025-12-31 | $2,462,544 | 209,400 | Call | Defined | 2026-02-17 | |
| 2025-09-30 | $1,970,144 | 255,200 | Put | Defined | 2025-11-14 | |
| 2025-09-30 | $3,831,436 | 496,300 | Call | Defined | 2025-11-14 | |
| 2025-09-30 | $20,927,305 | 2,710,791 | Shares | Defined | 2025-11-14 | |
| 2025-06-30 | $4,267,928 | 583,848 | Shares | Defined | 2025-08-14 | |
| 2025-06-30 | $2,878,678 | 393,800 | Call | Defined | 2025-08-14 | |
| 2025-06-30 | $1,315,069 | 179,900 | Put | Defined | 2025-08-14 | |
| 2025-03-31 | $1,336,732 | 140,857 | Shares | Defined | 2025-05-15 | |
| 2025-03-31 | $480,194 | 50,600 | Put | Defined | 2025-05-15 | |
| 2025-03-31 | $2,989,350 | 315,000 | Call | Defined | 2025-05-15 | |
| 2024-12-31 | $1,236,000 | 75,000 | Put | Defined | 2025-02-14 | |
| 2024-12-31 | $912,678 | 55,381 | Shares | Defined | 2025-02-14 | |
| 2024-12-31 | $4,179,328 | 253,600 | Call | Defined | 2025-02-14 | |
| 2024-09-30 | $1,991,250 | 135,000 | Call | Defined | 2024-11-14 | |
| 2024-09-30 | $334,825 | 22,700 | Put | Defined | 2024-11-14 | |
| 2024-09-30 | $283,583 | 19,226 | Shares | Defined | 2024-11-14 | |
| 2024-06-30 | $323,171 | 23,300 | Put | Defined | 2024-08-14 | |
| 2024-06-30 | $2,108,240 | 152,000 | Call | Defined | 2024-08-14 | |
| 2024-03-31 | $1,755,924 | 111,700 | Call | Defined | 2024-05-15 | |
| 2024-03-31 | $1,199,436 | 76,300 | Put | Defined | 2024-05-15 | |
| 2023-12-31 | $576,881 | 35,654 | Shares | Defined | 2024-02-14 | |
| 2023-12-31 | $1,818,632 | 112,400 | Call | Defined | 2024-02-14 | |
| 2023-12-31 | $1,207,028 | 74,600 | Put | Defined | 2024-02-14 | |
| 2023-09-30 | $1,131,600 | 92,000 | Call | Defined | 2023-11-14 | |
| 2023-09-30 | $3,856,935 | 313,572 | Shares | Defined | 2023-11-14 | |
| 2023-09-30 | $706,020 | 57,400 | Put | Defined | 2023-11-14 | |
| 2023-06-30 | $7,877,786 | 490,217 | Shares | Defined | 2023-08-14 | |
| 2023-06-30 | $859,745 | 53,500 | Put | Defined | 2023-08-14 | |
| 2023-06-30 | $1,349,880 | 84,000 | Call | Defined | 2023-08-14 | |
| 2023-03-31 | $24,689,208 | 1,418,105 | Shares | Defined | 2023-05-15 | |
| 2023-03-31 | $1,382,354 | 79,400 | Call | Defined | 2023-05-15 | |
| 2023-03-31 | $699,882 | 40,200 | Put | Defined | 2023-05-15 | |
| 2022-12-31 | $413,952 | 44,800 | Put | Defined | 2023-02-14 | |
| 2022-12-31 | $5,505,053 | 595,785 | Shares | Defined | 2023-02-14 | |
| 2022-12-31 | $208,824 | 22,600 | Call | Defined | 2023-02-14 | |
| 2022-09-30 | $10,560,018 | 1,226,483 | Shares | Defined | 2022-11-14 | |
| 2022-09-30 | $472,689 | 54,900 | Put | Defined | 2022-11-14 | |
| 2022-09-30 | $293,601 | 34,100 | Call | Defined | 2022-11-14 | |
| 2022-06-30 | $536,270 | 65,800 | Call | Defined | 2022-08-15 | |
| 2022-06-30 | $436,840 | 53,600 | Put | Defined | 2022-08-15 | |
| 2022-06-30 | $7,742,703 | 950,025 | Shares | Defined | 2022-08-15 | |
| 2022-03-31 | $1,187,055 | 97,700 | Call | Defined | 2022-05-16 | |
| 2022-03-31 | $7,802,280 | 642,163 | Shares | Defined | 2022-05-16 | |
| 2022-03-31 | $880,875 | 72,500 | Put | Defined | 2022-05-16 | |
| 2021-12-31 | $10,470,369 | 306,869 | Shares | Defined | 2022-02-14 | |
| 2021-12-31 | $1,248,792 | 36,600 | Call | Defined | 2022-02-14 | |
| No filing history on record for this holder in this stock. | ||||||