Charles River Laboratories International, Inc.
MX ˙ BMV ˙ US1598641074
SecurityMX:CRL / Charles River Laboratories International, Inc.
InstitutionWe Are One Seven, LLC
Latest Disclosed Ownership1,278 shares
Latest Disclosed Value $ 220,455
We Are One Seven, LLC reports 2.57% increase in ownership of CRL / Charles River Laboratories International, Inc.

On May 14, 2026 - We Are One Seven, LLC filed a 13F-HR form disclosing ownership of 1,278 shares of Charles River Laboratories International, Inc. (MX:CRL) valued at $220,455 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 3, 2026 disclosing 1,246 shares of Charles River Laboratories International, Inc.. This represents a change in shares of 2.57% 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.

Upgrade to unlock premium data and export to Excel .

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)
2026-05-14 2026-03-31 13F CHARLES RIV LABS INTL COM 159864107 1,278 32 2.57 220 -11.29 0.0044
2026-02-03 2025-12-31 13F CHARLES RIV LABS INTL COM 159864107 1,246 -66 -5.03 249 20.98 0.0051
2025-10-24 2025-09-30 13F CHARLES RIV LABS INTL COM 159864107 1,312 1,312 205 0.0047
2025-02-14 2024-12-31 13F CHARLES RIV LABS INTL COM 159864107 0 -1,332 -100.00 0 -100.00
2024-10-15 2024-09-30 13F CHARLES RIV LABS INTL COM 159864107 1,332 -182 -12.02 262 -16.03 0.0113
2024-08-07 2024-06-30 13F CHARLES RIV LABS INTL COM 159864107 1,514 -22 -1.43 313 -25.00 0.0148
2024-05-14 2024-03-31 13F CHARLES RIV LABS INTL COM 159864107 1,536 -403 -20.78 416 -9.17 0.0216
2024-02-14 2023-12-31 13F CHARLES RIV LABS INTL COM 159864107 1,939 -229 -10.56 458 8.02 0.0263
2023-11-03 2023-09-30 13F CHARLES RIV LABS INTL COM 159864107 2,168 -47 -2.12 425 -8.82 0.0327
2023-08-11 2023-06-30 13F CHARLES RIV LABS INTL COM 159864107 2,215 78 3.65 466 7.89 0.0426
2023-05-08 2023-03-31 13F CHARLES RIV LABS INTL COM 159864107 2,137 -10 -0.47 431 -7.71 0.0274
2023-01-25 2022-12-31 13F CHARLES RIV LABS INTL COM 159864107 2,147 -202 -8.60 468 -27.93 0.0468
2022-11-14 2022-09-30 13F CHARLES RIV LABS INTL INC COM COM 159864107 2,349 -116 -4.71 648 22.96 0.0251
2022-08-10 2022-06-30 13F CHARLES RIV LABS INTL INC COM COM 159864107 2,465 -360 -12.74 527 -34.29 0.0727
2022-05-13 2022-03-31 13F CHARLES RIV LABS INTL INC COM COM 159864107 2,825 -737 -20.69 802 -40.24 0.0862
2022-02-09 2021-12-31 13F CHARLES RIV LABS INTL INC COM COM 159864107 3,562 119 3.46 1,342 -13.14 0.1392
2021-11-09 2021-09-30 13F CHARLES RIV LABS INTL INC COM COM 159864107 3,443 -217 -5.93 1,545 14.11 0.1960
2021-07-29 2021-06-30 13F CHARLES RIV LABS INTL INC COM COM 159864107 3,660 88 2.46 1,354 30.82 0.1892
2021-04-29 2021-03-31 13F CHARLES RIV LABS INTL INC COM COM 159864107 3,572 -29 -0.81 1,035 15.00 0.1777
2021-01-22 2020-12-31 13F CHARLES RIV LABS INTL INC COM COM 159864107 3,601 -178 -4.71 900 5.14 0.1855
2020-10-30 2020-09-30 13F CHARLES RIV LABS INTL INC COM COM 159864107 3,779 -89 -2.30 856 27.00 0.2034
2020-08-12 2020-06-30 13F CHARLES RIV LABS INTL INC COM COM 159864107 3,868 -212 -5.20 674 31.13 0.1752
2020-04-17 2020-03-31 13F CHARLES RIV LABS INTL INC COM COM 159864107 4,080 -214 -4.98 514 -21.53 0.1746
2020-01-16 2019-12-31 13F CHARLES RIV LABS INTL INC COM COM 159864107 4,294 -31 -0.72 655 14.31 0.1711
2019-10-10 2019-09-30 13F CHARLES RIV LABS INTL INC COM COM 159864107 4,325 130 3.10 573 -3.70 0.1647
2019-07-16 2019-06-30 13F CHARLES RIV LABS INTL INC COM COM 159864107 4,195 -406 -8.82 595 -10.93 0.1920
2019-04-09 2019-03-31 13F CHARLES RIV LABS INTL INC COM COM 159864107 4,601 2,106 84.41 668 136.88 0.2177
2019-01-24 2018-12-31 13F CHARLES RIV LABS INTL INC COM COM 159864107 2,495 -267 -9.67 282 -23.99 0.1209
2018-10-09 2018-09-30 13F CHARLES RIV LABS INTL INC COM COM 159864107 2,762 -161 -5.51 371 18.91 0.1735
2018-05-15 2018-03-31 13F CHARLES RIVER LABORATORIES INC COM Total COM 159864107 2,923 -132 -4.32 312 -6.59 0.1437
2018-02-16 2017-12-31 13F CHARLES RIVER LABORATORIES INC COM COM 159864107 3,055 3,055 334 0.1545
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.