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Walleye Trading LLC

Position in CRL — Charles River Laboratories International, Inc.

CIK 1388391 NEW YORK, NY

Position in CRL

as of Mar 31, 2026 · filed May 11, 2026
Position Value
$5,461,522
+$5,275,009 QoQ
Shares Held
31,661
+3286.2% QoQ
Ownership
0.066%
of shares outstanding
% of Portfolio
0.12%
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, 2026
CallValue
$1,466,250
CallShares
8,500
PutValue
$10,419,000
PutShares
60,400

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, 2026

Walleye Trading LLC holds $9,391,151 across 9 Diagnostics & Research names. CRL ranks #1 (58.2% of the industry book) .

# Ticker Company Shares Value (USD) Open
1 CRL
Charles River Laboratories International, Inc.
This page
31,661 $5,461,522

All Filings in CRL

Export CSV
50 filing rows on record
Report Date Value (USD) Shares
2026-03-31 $1,466,250 8,500
2026-03-31 $10,419,000 60,400
2026-03-31 $5,461,522 31,661
2025-12-31 $139,636 700
2025-12-31 $186,513 935
2025-12-31 $518,648 2,600
2025-09-30 $688,424 4,400
2025-09-30 $985,698 6,300
2025-06-30 $330,316 2,177
2025-06-30 $151,730 1,000
2025-06-30 $197,249 1,300
2025-03-31 $299,233 1,988
2025-03-31 $421,456 2,800
2025-03-31 $1,159,004 7,700
2024-12-31 $246,441 1,335
2024-12-31 $590,720 3,200
2024-12-31 $1,144,520 6,200
2024-09-30 $1,369,729 6,954
2024-09-30 $433,334 2,200
2024-09-30 $610,607 3,100
2024-06-30 $309,870 1,500
2024-06-30 $578,424 2,800
2024-03-31 $8,914,255 32,900
2024-03-31 $948,325 3,500
2023-12-31 $2,529,480 10,700
2023-12-31 $7,612,080 32,200
2023-09-30 $2,177,729 11,112
2023-09-30 $2,684,926 13,700
2023-09-30 $7,819,602 39,900
2023-06-30 $3,258,875 15,500
2023-06-30 $3,931,675 18,700
2023-03-31 $1,755,834 8,700
2023-03-31 $2,098,928 10,400
2022-12-31 $1,067,710 4,900
2022-12-31 $740,860 3,400
2022-09-30 $393,600 2,000
2022-09-30 $78,720 400
2022-06-30 $3,102,565 14,500
2022-03-31 $349,567 1,231
2021-12-31 $263,746 700
2021-12-31 $981,888 2,606
2021-12-31 $301,424 800
2021-09-30 $247,602 600
2021-09-30 $1,275,975 3,092
2021-09-30 $288,869 700
2021-06-30 $888,177 2,401
2021-06-30 $1,072,768 2,900
2021-03-31 $724,575 2,500
2021-03-31 $1,478,133 5,100
2020-12-31 $699,608 2,800