D. E. Shaw & Co., Inc.
Position in CRL — Charles River Laboratories International, Inc.
CIK 1009207
New York, NY
Position in CRL
as of Mar 31, 2026
· filed May 15, 2026
Position Value
$33,375,817
-$52,625,595 QoQ
Shares Held
193,483
-55.1% QoQ
Ownership
0.402%
of shares outstanding
% of Portfolio
0.03%
of 13F equity value
Holder Rank
—
not a current holder
Holding Since
Mar 2020
20 quarters on record
Voting authority
Sole 99.12136983610964.ToString("F0")%
Shared 0.ToString("F0")%
None 0.8786301638903676.ToString("F0")%
Common Shares in CRL Over Time
Shares Held
Position Value (USD)
Derivatives in CRL
reported options exposure · as of Sep 30, 2025CallValue
$0
CallShares
0
PutValue
$250,336
PutShares
1,600
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, 2026D. E. Shaw & Co., Inc. holds $1,676,976,764 across 27 Diagnostics & Research names. CRL ranks #10 (2.0% of the industry book) .
| # | Ticker | Company | Shares | Value (USD) | Open |
|---|---|---|---|---|---|
| 1 | WAT |
Waters Corp /De/
|
1,025,240 | $305,316,471 | |
| 2 | DHR |
Danaher Corp /De/
|
1,428,248 | $270,795,820 | |
| 3 | MEDP |
Medpace Holdings, Inc.
|
432,602 | $207,731,153 | |
| 4 | A |
Agilent Technologies, Inc.
|
1,695,923 | $193,301,303 | |
| 5 | TMO |
Thermo Fisher Scientific Inc.
|
302,848 | $148,858,876 | |
| 6 | ICLR |
Icon PLC
|
1,198,555 | $132,632,096 | |
| 7 | NTRA |
Natera, Inc.
|
491,336 | $98,262,286 | |
| 8 | MTD |
Mettler Toledo International Inc/
|
73,125 | $92,225,250 |
All Filings in CRL
Export CSV
28 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-03-31 | $33,375,817 | 193,483 | Shares | Defined | 2026-05-15 | |
| 2025-12-31 | $86,001,412 | 431,128 | Shares | Defined | 2026-02-17 | |
| 2025-09-30 | $250,336 | 1,600 | Put | Defined | 2025-11-14 | |
| 2025-09-30 | $150,129,158 | 959,537 | Shares | Defined | 2025-11-14 | |
| 2025-06-30 | $92,102,992 | 607,019 | Shares | Defined | 2025-08-14 | |
| 2025-06-30 | $242,768 | 1,600 | Put | Defined | 2025-08-14 | |
| 2025-03-31 | $240,832 | 1,600 | Put | Defined | 2025-05-15 | |
| 2024-12-31 | $295,360 | 1,600 | Put | Defined | 2025-02-14 | |
| 2024-12-31 | $15,627,497 | 84,656 | Shares | Defined | 2025-02-14 | |
| 2023-12-31 | $1,148,194 | 4,857 | Shares | Defined | 2024-02-14 | |
| 2023-09-30 | $219,497 | 1,120 | Shares | Defined | 2023-11-14 | |
| 2023-03-31 | $2,426,280 | 12,022 | Shares | Defined | 2023-05-15 | |
| 2022-12-31 | $7,563,091 | 34,709 | Shares | Defined | 2023-02-14 | |
| 2022-09-30 | $19,883,097 | 101,032 | Shares | Defined | 2022-11-14 | |
| 2022-06-30 | $2,139,700 | 10,000 | Put | Defined | 2022-08-15 | |
| 2022-06-30 | $35,833,555 | 167,470 | Shares | Defined | 2022-08-15 | |
| 2022-03-31 | $2,839,700 | 10,000 | Put | Defined | 2022-05-16 | |
| 2022-03-31 | $30,714,195 | 108,160 | Shares | Defined | 2022-05-16 | |
| 2021-12-31 | $381,301 | 1,012 | Shares | Defined | 2022-02-14 | |
| 2021-12-31 | $5,463,310 | 14,500 | Call | Defined | 2022-02-14 | |
| 2021-09-30 | $2,682,355 | 6,500 | Call | Defined | 2021-11-15 | |
| 2021-09-30 | $4,126,700 | 10,000 | Put | Defined | 2021-11-15 | |
| 2021-09-30 | $1,166,618 | 2,827 | Shares | Defined | 2021-11-15 | |
| 2021-06-30 | $311,472 | 842 | Shares | Defined | 2021-08-16 | |
| 2020-12-31 | $3,824,357 | 15,306 | Shares | Defined | 2021-02-16 | |
| 2020-09-30 | $5,121,166 | 22,615 | Shares | Defined | 2020-11-16 | |
| 2020-06-30 | $6,198,316 | 35,551 | Shares | Defined | 2020-08-14 | |
| 2020-03-31 | $7,098,555 | 56,244 | Shares | Defined | 2020-05-15 | |
| No filing history on record for this holder in this stock. | ||||||