Charles River Laboratories International, Inc.
MX ˙ BMV ˙ US1598641074
SecurityMX:CRL / Charles River Laboratories International, Inc.
InstitutionComerica Bank
Latest Disclosed Ownership6,197 shares
Latest Disclosed Value $ 1,236,065
Comerica Bank reports 55.82% decrease in ownership of CRL / Charles River Laboratories International, Inc.

On January 29, 2026 - Comerica Bank filed a 13F-HR form disclosing ownership of 6,197 shares of Charles River Laboratories International, Inc. (MX:CRL) valued at $1,236,065 USD as of December 31, 2025. The entity filed a previous 13F-HR on November 14, 2025 disclosing 14,026 shares of Charles River Laboratories International, Inc.. This represents a change in shares of -55.82% during the quarter.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date		 Effective
Date		Form Security Class ID Avg Price
Paid (Est)		 Reported
Shares		 ΔShares ΔShares
(%)		 Reported
Value
(x1000)		 ΔValue
(%)		 Alloc
(%)		 ΔAlloc ΔAlloc (%) Cost Basis
(x1000)		 Unrealized
Gain/Loss
(x1000)
2026-01-29 2025-12-31 13F CHARLES RIV LABS INTL COM 159864107 6,197 -7,829 -55.82 1,236 -43.66 0.0049
2025-11-14 2025-09-30 13F CHARLES RIV LABS INTL COM 159864107 14,026 -226 -1.59 2,195 1.48 0.0083
2025-08-14 2025-06-30 13F CHARLES RIV LABS INTL COM 159864107 14,252 1,524 11.97 2,163 12.90 0.0084
2025-05-14 2025-03-31 13F CHARLES RIV LABS INTL COM 159864107 12,728 -518 -3.91 1,916 -21.68 0.0080
2025-02-14 2024-12-31 13F/A-1 CHARLES RIV LABS INTL COM 159864107 13,246 -3,230 -19.60 2,445 -24.65 0.0099
2025-02-14 2024-12-31 13F CHARLES RIV LABS INTL COM 159864107 13,246 -3,230 2,445 0.0082
2024-11-14 2024-09-30 13F CHARLES RIV LABS INTL COM 159864107 16,476 -671 -3.91 3,245 -8.39 0.0128
2024-08-15 2024-06-30 13F CHARLES RIVER LABORATORIES COMMON 159864107 17,147 -367 -2.10 3,542 -25.35 0.0147
2024-05-16 2024-03-31 13F CHARLES RIVER LABORATORIES COMMON 159864107 17,514 927 5.59 4,745 21.02 0.0204
2024-02-14 2023-12-31 13F CHARLES RIVER LABORATORIES COMMON 159864107 16,587 -982 -5.59 3,921 13.88 0.0181
2023-11-21 2023-09-30 13F CHARLES RIV LABS INTL COMMON 159864107 17,569 -6,008 -25.48 3,443 0.0179
2023-08-22 2023-06-30 13F CHARLES RIVER LABORATORIES EQU 159864107 23,577 17,051 261.28 0 -100.00 0.0025
2023-01-26 2022-12-31 13F CHARLES RIVER LABORATORIES COM 159864107 6,526 -2,000 -23.46 2 -99.94 0.0120
2022-10-28 2022-09-30 13F CHARLES RIVER LABORATORIES COM 159864107 8,526 69 0.82 1,713 -10.36 0.0144
2022-08-02 2022-06-30 13F CHARLES RIVER LABORATORIES COM 159864107 8,457 99 1.18 1,911 -22.97 0.0157
2022-04-27 2022-03-31 13F CHARLES RIVER LABORATORIES COM 159864107 8,358 -67 -0.80 2,481 -7.36 0.0180
2022-02-18 2021-12-31 13F CHARLES RIVER LABORATORIES COM 159864107 8,425 -48 -0.57 2,678 -24.86 0.0197
2021-11-22 2021-09-30 13F CHARLES RIVER LABORATORIES COM 159864107 8,473 -2,511 -22.86 3,564 -22.81 0.0215
2021-08-26 2021-06-30 13F CHARLES RIVER LABORATORIES COM 159864107 10,984 -46,934 -81.04 4,617 -76.16 0.0276
2021-04-28 2021-03-31 13F CHARLES RIVER LABORATORIES COM 159864107 57,918 5,177 9.82 19,364 31.04 0.1155
2021-01-28 2020-12-31 13F CHARLES RIVER LABORATORIES COM 159864107 52,741 12,856 32.23 14,777 59.13 0.0938
2020-10-30 2020-09-30 13F CHARLES RIVER LABORATORIES COM 159864107 39,885 1,468 3.82 9,286 21.98 0.0674
2020-07-31 2020-06-30 13F CHARLES RIVER LABORATORIES COM 159864107 38,417 3,010 8.50 7,613 57.00 0.0587
2020-05-01 2020-03-31 13F CHARLES RIVER LABORATORIES COM 159864107 35,407 -828 -2.29 4,849 -14.72 0.0445
2020-02-07 2019-12-31 13F CHARLES RIVER LABORATORIES COM 159864107 36,235 132 0.37 5,686 23.42 0.0431
2019-10-31 2019-09-30 13F CHARLES RIVER LABORATORIES COM 159864107 36,103 1,156 3.31 4,607 -2.52 0.0364
2019-08-02 2019-06-30 13F CHARLES RIVER LABORATORIES COM 159864107 34,947 -4,178 -10.68 4,726 -16.83 0.0378
2019-05-02 2019-03-31 13F CHARLES RIVER LABORATORIES COM 159864107 39,125 -704 -1.77 5,682 19.50 0.0461
2019-02-06 2018-12-31 13F CHARLES RIVER LABORATORIES COM 159864107 39,829 8,919 28.85 4,755 26.53 0.0404
2018-11-01 2018-09-30 13F CHARLES RIVER LABORATORIES COM 159864107 30,910 -5,628 -15.40 3,758 -14.26 0.0303
2018-08-01 2018-06-30 13F CHARLES RIVER LABORATORIES COM 159864107 36,538 -859 -2.30 4,383 10.57 0.0306
2018-05-01 2018-03-31 13F CHARLES RIVER LABORATORIES COM 159864107 37,397 -116 -0.31 3,964 0.13 0.0283
2018-02-02 2017-12-31 13F CHARLES RIVER LABORATORIES COM 159864107 37,513 101 0.27 3,959 -8.08 0.0264
2017-11-06 2017-09-30 13F CHARLES RIVER LABORATORIES COM 159864107 37,412 116 0.31 4,307 13.52 0.0312
2017-08-03 2017-06-30 13F CHARLES RIVER LABORATORIES COM 159864107 37,296 452 1.23 3,794 14.90 0.0284
2017-05-03 2017-03-31 13F CHARLES RIVER LABORATORIES COM 159864107 36,844 1,803 5.15 3,302 17.01 0.0251
2017-02-08 2016-12-31 13F CHARLES RIVER LABORATORIES COM 159864107 35,041 2,491 7.65 2,822 3.03 0.0223
2016-08-11 2016-06-30 13F CHARLES RIVER LABORATORIES COM 159864107 32,550 1,012 3.21 2,739 7.92 0.0237
2016-05-11 2016-03-31 13F CHARLES RIVER LABORATORIES COM 159864107 31,538 -836 -2.58 2,538 -0.70 0.0227
2016-02-05 2015-12-31 13F CHARLES RIVER LABORATORIES COM 159864107 32,374 -45 -0.14 2,556 24.14 0.0251
2015-11-12 2015-09-30 13F CHARLES RIVER LABORATORIES COM 159864107 32,419 -32,967 -50.42 2,059 -55.24 0.0195
2015-08-13 2015-06-30 13F CHARLES RIVER LABORATORIES COM 159864107 65,386 32,628 99.60 4,600 77.13 0.0197
2015-05-15 2015-03-31 13F CHARLES RIVER LABORATORIES COM 159864107 32,758 -32,554 -49.84 2,597 -37.51 0.0220
2015-02-13 2014-12-31 13F CHARLES RIVER LABORATORIES COM 159864107 65,312 31,737 94.53 4,156 107.18 0.0180
2014-10-21 2014-09-30 13F CHARLES RIVER LABORATORIES COM 159864107 33,575 -669 -1.95 2,006 9.44 0.0177
2014-08-12 2014-06-30 13F CHARLES RIVER LABORATORIES COM 159864107 34,244 -3,035 -8.14 1,833 -18.50 0.0156
2014-05-15 2014-03-31 13F CHARLES RIVER LABORATORIES COM 159864107 37,279 285 0.77 2,249 14.63 0.0172
2014-02-11 2013-12-31 13F CHARLES RIVER LABORATORIES COM 159864107 36,994 -1,744 -4.50 1,962 9.49 0.0152
2013-11-12 2013-09-30 13F CHARLES RIVER LABORATORIES COM 159864107 38,738 954 2.52 1,792 15.54 0.0125
2013-08-13 2013-06-30 13F/A-1 CHARLES RIVER LABORATORIES COM 159864107 37,784 37,784 1,551 0.0126
2013-08-08 2013-06-30 13F CHARLES RIVER LABORATORIES COM 159864107 184,656 7,579
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.