CITADEL ADVISORS LLC
Position in CRL — Charles River Laboratories International, Inc.
CIK 1423053
MIAMI, FL
Position in CRL
as of Mar 31, 2026
· filed May 15, 2026
Position Value
$209,096,220
+$125,810,129 QoQ
Shares Held
1,212,152
+190.3% QoQ
Ownership
2.52%
of shares outstanding
% of Portfolio
0.16%
of 13F equity value
Holder Rank
—
not a current holder
Holding Since
Mar 2020
25 quarters on record
Voting authority
Sole 100.ToString("F0")%
Shared 0.ToString("F0")%
None 0.ToString("F0")%
Common Shares in CRL Over Time
Shares Held
Position Value (USD)
Derivatives in CRL
reported options exposure · as of Mar 31, 2026CallValue
$4,881,750
CallShares
28,300
PutValue
$1,656,000
PutShares
9,600
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 $1,657,068,556 across 34 Diagnostics & Research names. CRL ranks #2 (12.6% 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.
This page
|
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 CRL
Export CSV
50 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-03-31 | $1,656,000 | 9,600 | Put | Defined | 2026-05-15 | |
| 2026-03-31 | $4,881,750 | 28,300 | Call | Defined | 2026-05-15 | |
| 2026-03-31 | $209,096,220 | 1,212,152 | Shares | Defined | 2026-05-15 | |
| 2025-12-31 | $1,077,192 | 5,400 | Put | Defined | 2026-02-17 | |
| 2025-12-31 | $83,286,091 | 417,516 | Shares | Defined | 2026-02-17 | |
| 2025-12-31 | $4,568,092 | 22,900 | Call | Defined | 2026-02-17 | |
| 2025-09-30 | $2,253,024 | 14,400 | Put | Defined | 2025-11-14 | |
| 2025-09-30 | $5,585,622 | 35,700 | Call | Defined | 2025-11-14 | |
| 2025-09-30 | $18,466,973 | 118,030 | Shares | Defined | 2025-11-14 | |
| 2025-06-30 | $6,569,909 | 43,300 | Call | Defined | 2025-08-14 | |
| 2025-06-30 | $85,665,392 | 564,591 | Shares | Defined | 2025-08-14 | |
| 2025-06-30 | $6,433,352 | 42,400 | Put | Defined | 2025-08-14 | |
| 2025-03-31 | $5,162,836 | 34,300 | Call | Defined | 2025-05-15 | |
| 2025-03-31 | $6,878,764 | 45,700 | Put | Defined | 2025-05-15 | |
| 2025-03-31 | $42,449,198 | 282,017 | Shares | Defined | 2025-05-15 | |
| 2024-12-31 | $31,497,559 | 170,626 | Shares | Defined | 2025-02-14 | |
| 2024-12-31 | $8,307,000 | 45,000 | Call | Defined | 2025-02-14 | |
| 2024-12-31 | $8,750,040 | 47,400 | Put | Defined | 2025-02-14 | |
| 2024-09-30 | $7,681,830 | 39,000 | Put | Defined | 2024-11-14 | |
| 2024-09-30 | $2,796,383 | 14,197 | Shares | Defined | 2024-11-14 | |
| 2024-09-30 | $11,207,593 | 56,900 | Call | Defined | 2024-11-14 | |
| 2024-06-30 | $11,341,242 | 54,900 | Put | Defined | 2024-08-14 | |
| 2024-06-30 | $5,962,311 | 28,862 | Shares | Defined | 2024-08-14 | |
| 2024-06-30 | $17,146,140 | 83,000 | Call | Defined | 2024-08-14 | |
| 2024-03-31 | $889,799 | 3,284 | Shares | Defined | 2024-05-15 | |
| 2024-03-31 | $18,993,595 | 70,100 | Put | Defined | 2024-05-15 | |
| 2024-03-31 | $11,813,420 | 43,600 | Call | Defined | 2024-05-15 | |
| 2023-12-31 | $11,489,040 | 48,600 | Call | Defined | 2024-02-14 | |
| 2023-12-31 | $44,916 | 190 | Shares | Defined | 2024-02-14 | |
| 2023-12-31 | $10,756,200 | 45,500 | Put | Defined | 2024-02-14 | |
| 2023-09-30 | $4,683,922 | 23,900 | Put | Defined | 2023-11-14 | |
| 2023-09-30 | $11,151,262 | 56,900 | Call | Defined | 2023-11-14 | |
| 2023-09-30 | $1,267,990 | 6,470 | Shares | Defined | 2023-11-14 | |
| 2023-06-30 | $1,745,075 | 8,300 | Call | Defined | 2023-08-14 | |
| 2023-06-30 | $5,607,366 | 26,670 | Shares | Defined | 2023-08-14 | |
| 2023-06-30 | $1,156,375 | 5,500 | Put | Defined | 2023-08-14 | |
| 2023-03-31 | $1,493,468 | 7,400 | Put | Defined | 2023-05-15 | |
| 2023-03-31 | $3,935,490 | 19,500 | Call | Defined | 2023-05-15 | |
| 2023-03-31 | $1,473,285 | 7,300 | Shares | Defined | 2023-05-15 | |
| 2022-12-31 | $8,853,712 | 40,632 | Shares | Defined | 2023-02-14 | |
| 2022-12-31 | $5,730,770 | 26,300 | Put | Defined | 2023-02-14 | |
| 2022-12-31 | $2,701,960 | 12,400 | Call | Defined | 2023-02-14 | |
| 2022-09-30 | $2,007,360 | 10,200 | Put | Defined | 2022-11-14 | |
| 2022-09-30 | $9,525,120 | 48,400 | Call | Defined | 2022-11-14 | |
| 2022-09-30 | $3,608,130 | 18,334 | Shares | Defined | 2022-11-14 | |
| 2022-06-30 | $3,378,800 | 15,791 | Shares | Defined | 2022-08-15 | |
| 2022-06-30 | $6,440,497 | 30,100 | Call | Defined | 2022-08-15 | |
| 2022-06-30 | $4,643,149 | 21,700 | Put | Defined | 2022-08-15 | |
| 2022-03-31 | $9,512,995 | 33,500 | Call | Defined | 2022-05-16 | |
| 2022-03-31 | $63,770,006 | 224,566 | Shares | Defined | 2022-05-16 | |
| No filing history on record for this holder in this stock. | ||||||