CHARLES RIV LABS INTL INC CRL
COM · Common Stock · CUSIP 159864107 · ISIN US1598641074
Major US biomedical company
- SectorHealth care
- IndustryServices-Commercial Physical & Biological Research
- HeadquartersWilmington, MA
- Founded1947
- Websitecriver.com
- FilingsSEC EDGAR
* Summed across managers. Shares that two managers' reports both contain – a subsidiary's holdings that its parent's report includes too, or a sub-adviser's in its client's – are counted once ($16.3m this quarter). Holder counts are more reliable. Shares outstanding: 47.7m as of 2026-07-25, from the company's own SEC filing; the percentage can still exceed 100%: lent-out shares are counted by the lender and the buyer, and some reports overlap without saying so. Implied quarter-end price ≈ $226.51. Options: 8 managers hold calls ($59.0m notional), 9 hold puts ($31.7m).
Trends to Q2 2026
Institutional holders
Managers reporting a position, each quarter
Numbers
| Quarter | Holders |
|---|---|
| Q3 2022 | 584 |
| Q4 2022 | 629 |
| Q1 2023 | 623 |
| Q2 2023 | 613 |
| Q3 2023 | 623 |
| Q4 2023 | 634 |
| Q1 2024 | 675 |
| Q2 2024 | 666 |
| Q3 2024 | 629 |
| Q4 2024 | 637 |
| Q1 2025 | 564 |
| Q2 2025 | 520 |
| Q3 2025 | 556 |
| Q4 2025 | 583 |
| Q1 2026 | 561 |
| Q2 2026 | 569 |
Buyers vs sellers
Managers adding to or starting a position, vs cutting or selling out
Numbers
| Quarter | Bought or added | Cut or sold out |
|---|---|---|
| Q3 2024 | 263 | 370 |
| Q4 2024 | 248 | 362 |
| Q1 2025 | 246 | 374 |
| Q2 2025 | 256 | 329 |
| Q3 2025 | 285 | 243 |
| Q4 2025 | 273 | 285 |
| Q1 2026 | 252 | 286 |
| Q2 2026 | 267 | 264 |
Calls vs puts
Options held, notional value, last 4 quarters. P/C = puts ÷ calls
Numbers
| Quarter | Calls | Puts | P/C |
|---|---|---|---|
| Q3 2025 | $35.1m | $28.0m | 0.80 |
| Q4 2025 | $33.4m | $21.4m | 0.64 |
| Q1 2026 | $40.9m | $33.4m | 0.82 |
| Q2 2026 | $59.0m | $31.7m | 0.54 |
Biggest buyers
| FMR LLC | Added | +783.5k |
| Invesco Ltd. | Added | +587.5k |
| PRICE T ROWE ASSOCIATES INC /MD/ | Added | +380.2k |
| CITIGROUP INC | Added | +234.9k |
| GOLDMAN SACHS GROUP INC | Added | +225.1k |
| MARSHALL WACE, LLP | Added | +193.3k |
| SRS Investment Management, LLC | New | +187.4k |
| Clearbridge Investments, LLC | Added | +148.7k |
| EARNEST PARTNERS LLC | Added | +148.6k |
| PERCEPTIVE ADVISORS LLC | New | +140.0k |
Biggest sellers
| MACKENZIE FINANCIAL CORP | Reduced | -593.3k |
| Van Berkom & Associates Inc. | Reduced | -552.9k |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | Reduced | -458.5k |
| MILLENNIUM MANAGEMENT LLC | Reduced | -447.6k |
| Amundi | Reduced | -360.9k |
| WELLINGTON MANAGEMENT GROUP LLP | Reduced | -340.9k |
| Alyeska Investment Group, L.P. | Reduced | -323.6k |
| AMERIPRISE FINANCIAL INC | Reduced | -228.2k |
| MASSACHUSETTS FINANCIAL SERVICES CO /MA/ | Reduced | -226.7k |
| MACQUARIE GROUP LTD | Reduced | -199.5k |
Biggest calls
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Added | $19.7m87.0k shares |
| CITADEL ADVISORS LLC | Added | $17.5m77.1k shares |
| JANE STREET GROUP, LLC | Added | $7.9m34.7k shares |
| UBS Group AG | New | $3.9m17.0k shares |
| IMC-Chicago, LLC | Added | $3.8m16.6k shares |
| Caption Management, LLC | Reduced | $3.4m15.0k shares |
| Walleye Trading LLC | Added | $2.4m10.4k shares |
| SIMPLEX TRADING, LLC | Added | $498.9k2.2k shares |
Biggest puts
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Added | $12.8m56.6k shares |
| Caption Management, LLC | Unchanged | $6.8m30.0k shares |
| MILLENNIUM MANAGEMENT LLC | New | $4.5m20.0k shares |
| CITADEL ADVISORS LLC | Added | $3.2m14.3k shares |
| Walleye Trading LLC | Reduced | $1.7m7.7k shares |
| IMC-Chicago, LLC | Reduced | $1.4m6.1k shares |
| JANE STREET GROUP, LLC | Reduced | $657.7k2.9k shares |
| SIMPLEX TRADING, LLC | Unchanged | $453.6k2.0k shares |
| GROUP ONE TRADING LLC | New | $45.4k200 shares |
Options at notional value: the value of the shares the contracts control, as filers report them, not what the options cost. Not included in the holders, shares or buying above.
Major shareholders (over 5%)
Anyone who owns more than 5% of a class of the company's shares has to say so: on Schedule 13D if they may try to influence or control the company, on 13G if they're a passive investor, and update it as the stake changes. Each holder's latest filing, from 19 Dec 2024 on; percentages are of the share class, as the holder worked them out.
| Holder | Stake |
|---|---|
| FMR LLC 13G · institution +1.4 pts · filed 2026-09-08 | 10.2% |
| VANGUARD CAPITAL MANAGEMENT LLC 13G · institution new · filed 2026-04-29 | 7.4% |
| BlackRock, Inc. 13G · institution filed 2025-04-17 | 6.9% |
| Invesco Ltd. 13G · institution +1.3 pts · filed 2026-08-13 | 6.2% |
Fell to 5% or below in the last year: VANGUARD GROUP INC (0.0%, 2026-03-26; now reported by VANGUARD CAPITAL MANAGEMENT LLC), WELLINGTON MANAGEMENT GROUP LLP (3.6%, 2026-02-10), NOMURA HOLDINGS INC (1.6%, 2025-11-14)
Insider purchases and sales since 1 Apr 2026
Shares bought or sold by the company's own officers, directors and 10% owners, in the open market or privately, as they reported to the SEC on Form 4 (due within two business days of the trade). Grants, option exercises, shares withheld for tax and gifts aren't included.
Officers and directors buying vs selling
Number of people, by quarter (10% owners not included)
Numbers
| Quarter | Buying | Bought | Selling | Sold | Sold under a plan |
|---|---|---|---|---|---|
| Q4 2024 | 0 | — | 1 | $1.6m | — |
| Q1 2025 | 2 | $1.3m | 1 | $715.0k | — |
| Q2 2025 | 0 | — | 2 | $111.7k | $39.0k |
| Q3 2025 | 0 | — | 1 | $251.6k | — |
| Q4 2025 | 0 | — | 0 | — | — |
| Q1 2026 | 1 | $4.4k | 0 | — | — |
| Q2 2026 | 0 | — | 1 | $16.9m | $16.9m |
| Q3 2026 | 0 | — | 6 | $25.7m | $22.8m |
| Date | Insider | Trade | Value |
|---|---|---|---|
| 2026-08-25 | FOSTER JAMES C Director | Sold plan | $10.1m33.6k shares |
| 2026-08-19 | Parisotto Shannon M CEVP, Disc & Safety Assessment | Sold plan | $599.7k2.0k shares |
| 2026-08-18 | Andrews Nancy C Director | Sold | $163.4k573 shares |
| 2026-08-11 | Girshick Birgit Chief Executive Officer, director | Sold plan | $1.8m6.5k shares |
| 2026-08-11 | Parisotto Shannon M CEVP, Disc & Safety Assessment | Sold plan | $1.0m3.7k shares |
| 2026-08-10 | FOSTER JAMES C Director | Sold plan | $7.9m28.7k shares |
| 2026-08-06 | Knell Michael Gunnar SVP, Finance and CAO | Sold | $1.7m6.6k shares |
| 2026-08-06 | Creamer Victoria L EVP & Chief People Officer | Sold | $1.1m4.2k shares |
| 2026-08-05 | Parisotto Shannon M CEVP, Disc & Safety Assessment | Sold plan | $1.3m5.0k shares |
| 2026-06-29 | FOSTER JAMES C Director | Sold plan | $16.9m75.0k shares |
Their holding: how much the trade added to or took from the insider's holding (direct, or the trust or fund named). The same trade is sometimes reported by more than one insider, such as a fund and the director who represents it; totals count it once. A value is left blank where the reported price is far from the market price (usually a typo).
Holders, Q2 2026
| Manager | Shares | Change |
|---|---|---|
| FMR LLC 0.04% of their portfolio | 4.2m $961.5m | Added +783.5k |
| BlackRock, Inc. 0.01% of their portfolio | 3.8m $861.5m | Reduced -60.5k |
| VANGUARD CAPITAL MANAGEMENT LLC 0.02% of their portfolio | 3.1m $714.2m | Reduced -52.9k |
| Invesco Ltd. 0.05% of their portfolio | 3.0m $676.9m | Added +587.5k |
| HARRIS ASSOCIATES L P 0.68% of their portfolio | 2.2m $508.3m | Added +87.8k |
| VANGUARD PORTFOLIO MANAGEMENT LLC 0.02% of their portfolio | 2.2m $501.4m | Reduced -83.7k |
| Allspring Global Investments Holdings, LLC 0.67% of their portfolio | 1.9m $436.5m | Reduced -88.1k |
| STATE STREET CORP 0.01% of their portfolio | 1.9m $422.8m | Reduced -9.3k |
| DIMENSIONAL FUND ADVISORS LP 0.07% of their portfolio | 1.6m $373.8m | Reduced -4.0k |
| ARIEL INVESTMENTS, LLC 3.41% of their portfolio | 1.5m $341.6m | Added +62.0k |
| PRICE T ROWE ASSOCIATES INC /MD/ 0.03% of their portfolio | 1.5m $341.4m | Added +380.2k |
| GEODE CAPITAL MANAGEMENT, LLC 0.02% of their portfolio | 1.3m $295.6m | Added +44 |
| WELLINGTON MANAGEMENT GROUP LLP 0.05% of their portfolio | 1.3m $292.2m | Reduced -340.9k |
| CITADEL ADVISORS LLC 0.16% of their portfolio | 1.2m $270.7m | Reduced -18.6k |
| BANK OF AMERICA CORP /DE/ 0.02% of their portfolio | 1.2m $265.9m | Added +37.6k |
| EARNEST PARTNERS LLC 0.92% of their portfolio | 1.1m $254.0m | Added +148.6k |
| AMERIPRISE FINANCIAL INC 0.04% of their portfolio | 881.2k $199.8m | Reduced -228.2k |
| NEUBERGER BERMAN GROUP LLC 0.13% of their portfolio | 862.7k $195.6m | Reduced -11.7k |
| SEI INVESTMENTS CO 0.16% of their portfolio | 813.5k $184.5m | Added +56.4k |
| MORGAN STANLEY 0.01% of their portfolio | 800.5k $181.5m | Reduced -25.2k |
| Clearbridge Investments, LLC 0.15% of their portfolio | 781.3k $177.2m | Added +148.7k |
| COOKE & BIELER LP 1.98% of their portfolio | 755.6k $171.4m | Reduced -112.3k |
| MASSACHUSETTS FINANCIAL SERVICES CO /MA/ 0.05% of their portfolio | 682.2k $157.6m | Reduced -226.7k |
| VICTORY CAPITAL MANAGEMENT INC 0.08% of their portfolio | 664.8k $150.8m | Reduced -78.6k |
| UBS Group AG 0.02% of their portfolio | 646.7k $146.7m | Reduced -84.7k |
| GOLDMAN SACHS GROUP INC 0.02% of their portfolio | 639.8k $145.1m | Added +225.1k |
| MILLENNIUM MANAGEMENT LLC 0.07% of their portfolio | 486.5k $110.3m | Reduced -447.6k |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC 0.01% of their portfolio | 467.7k $106.1m | Reduced -1.3k |
| BANK OF MONTREAL /CAN/ 0.04% of their portfolio | 459.8k $104.3m | Added +13.9k |
| LSV ASSET MANAGEMENT 0.19% of their portfolio | 455.1k $103.2m | Reduced -31.5k |
| Van Berkom & Associates Inc. 3.28% of their portfolio | 449.4k $101.9m | Reduced -552.9k |
| NORTHERN TRUST CORP 0.01% of their portfolio | 446.1k $101.2m | Added +710 |
| Gotham Asset Management, LLC 0.23% of their portfolio | 433.1k $98.2m | Added +74.6k |
| Amundi 0.02% of their portfolio | 412.4k $93.5m | Reduced -360.9k |
| ALLIANCEBERNSTEIN L.P. 0.02% of their portfolio | 374.6k $64.6m | Added +72.6k |
| NORGES BANK 0.01% of their portfolio | 370.0k $83.9m | Not comparable |
| MARSHALL WACE, LLP 0.07% of their portfolio | 343.0k $77.8m | Added +193.3k |
| CITIGROUP INC 0.03% of their portfolio | 316.2k $71.7m | Added +234.9k |
| BNP PARIBAS FINANCIAL MARKETS 0.04% of their portfolio | 304.7k $69.1m | Added +52.5k |
| Bank of New York Mellon Corp 0.01% of their portfolio | 304.5k $69.1m | Added +8.6k |
| Boston Trust Walden Corp 0.50% of their portfolio | 288.9k $65.5m | Added +3.5k |
| JPMORGAN CHASE & CO 0.00% of their portfolio | 286.3k $65.1m | Added +22.0k |
| SNYDER CAPITAL MANAGEMENT L P 1.10% of their portfolio | 281.8k $63.9m | Added +44.1k |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP 0.03% of their portfolio | 278.6k $63.2m | Reduced -458.5k |
| DEUTSCHE BANK AG\ 0.02% of their portfolio | 276.6k $62.7m | Added +1.2k |
| VANGUARD FIDUCIARY TRUST CO 0.01% of their portfolio | 270.7k $61.4m | Reduced -6.3k |
| PRIMECAP MANAGEMENT CO/CA/ 0.04% of their portfolio | 266.9k $60.5m | Reduced -20 |
| RAYMOND JAMES FINANCIAL INC 0.02% of their portfolio | 256.8k $58.2m | Added +63.2k |
| Meridiem Capital Partners LP 2.58% of their portfolio | 247.0k $56.0m | Reduced -115.1k |
| Alyeska Investment Group, L.P. 0.14% of their portfolio | 235.0k $53.3m | Reduced -323.6k |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC 0.01% of their portfolio | 225.3k $51.1m | Added +6.4k |
| LOOMIS SAYLES & CO L P 0.06% of their portfolio | 223.7k $50.7m | Added +52.7k |
| Quantinno Capital Management LP 0.06% of their portfolio | 216.2k $49.0m | Reduced -10.9k |
| ADAGE CAPITAL PARTNERS GP, L.L.C. 0.07% of their portfolio | 213.5k $48.4m | Reduced -42.5k |
| SRS Investment Management, LLC 0.40% of their portfolio | 187.4k $42.5m | New |
| NATIXIS ADVISORS, LLC 0.05% of their portfolio | 180.9k $41.0m | Added +58.4k |
| JONES FINANCIAL COMPANIES LLLP 0.01% of their portfolio | 172.4k $37.2m | Added +58.3k |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. 0.03% of their portfolio | 146.3k $33.2m | Added +136.5k |
| PERCEPTIVE ADVISORS LLC 0.49% of their portfolio | 140.0k $31.8m | New |
| Aberdeen Group plc 0.04% of their portfolio | 135.8k $30.8m | Added +22.0k |
| LAKEWOOD CAPITAL MANAGEMENT, LP 1.58% of their portfolio | 134.0k $30.4m | Added +65.0k |
| NEW YORK STATE COMMON RETIREMENT FUND 0.04% of their portfolio | 131.8k $29.9m | Added +22.5k |
| FEDERATED HERMES, INC. 0.04% of their portfolio | 131.6k $29.8m | Added +2.2k |
| Assenagon Asset Management S.A. 0.02% of their portfolio | 123.6k $28.0m | Added +101.4k |
| Nuveen, LLC 0.01% of their portfolio | 121.1k $27.5m | Reduced -12.9k |
| PICTON MAHONEY ASSET MANAGEMENT 0.24% of their portfolio | 116.1k $26.3m | Added +20.7k |
| FIL Ltd 0.02% of their portfolio | 111.0k $25.2m | Added +66.6k |
| Candriam S.C.A. 0.11% of their portfolio | 105.2k $23.8m | Added +18.7k |
| FRANKLIN RESOURCES INC 0.01% of their portfolio | 104.6k $23.7m | Reduced -16.2k |
| ROYAL BANK OF CANADA 0.00% of their portfolio | 104.6k $23.7m | Added +4.3k |
| Legal & General Group Plc 0.00% of their portfolio | 102.4k $23.2m | Added +5.5k |
| PUBLIC EMPLOYEES RETIREMENT ASSOCIATION OF COLORADO 0.08% of their portfolio | 101.6k $23.1m | Unchanged |
| Clark Capital Management Group, Inc. 0.13% of their portfolio | 101.5k $23.0m | Added +15.0k |
| Vanguard Global Advisers, LLC 0.01% of their portfolio | 99.0k $22.5m | Reduced -4.5k |
| Swiss National Bank 0.01% of their portfolio | 99.0k $22.5m | Added +1.7k |
| WELLS FARGO & COMPANY/MN 0.00% of their portfolio | 93.2k $21.1m | Added +13.4k |
| CONFLUENCE INVESTMENT MANAGEMENT LLC 0.32% of their portfolio | 91.6k $20.8m | Reduced -8.9k |
| GW&K Investment Management, LLC 0.16% of their portfolio | 90.6k $20.5m | Reduced -4.5k |
| ENVESTNET ASSET MANAGEMENT INC 0.00% of their portfolio | 89.4k $20.3m | Added +6.1k |
| NOMURA HOLDINGS INC 0.08% of their portfolio | 86.7k $19.7m | Added +82.2k |
| RHUMBLINE ADVISERS 0.01% of their portfolio | 85.9k $19.5m | Reduced -5.8k |
| Ilex Capital Partners (UK) LLP 0.38% of their portfolio | 81.2k $18.4m | Reduced -115.3k |
| Aristotle Capital Boston, LLC 1.23% of their portfolio | 80.6k $18.3m | Reduced -16.9k |
| Russell Investments Group, Ltd. 0.02% of their portfolio | 78.2k $17.7m | Added +31.0k |
| NICHOLAS COMPANY, INC. 0.30% of their portfolio | 71.9k $16.3m | Reduced -45 |
| NORDEA INVESTMENT MANAGEMENT AB 0.01% of their portfolio | 68.5k $15.5m | Added +12.4k |
| HSBC HOLDINGS PLC 0.01% of their portfolio | 67.8k $15.4m | Reduced -1.9k |
| MANUFACTURERS LIFE INSURANCE COMPANY, THE 0.01% of their portfolio | 66.9k $15.2m | Added +23.4k |
| Mitsubishi UFJ Asset Management Co., Ltd. 0.01% of their portfolio | 66.9k $15.2m | Added +3.1k |
| Ranger Investment Management, L.P. 0.95% of their portfolio | 66.2k $15.0m | Reduced -4.5k |
| California Public Employees Retirement System 0.01% of their portfolio | 64.7k $14.7m | Reduced -24.1k |
| ASSETMARK, INC 0.02% of their portfolio | 61.5k $13.9m | Added +9.1k |
| Rhenman & Partners Asset Management AB 1.22% of their portfolio | 57.2k $13.0m | Added +31.2k |
| CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM 0.01% of their portfolio | 56.9k $12.9m | Reduced -110 |
| RIVERBRIDGE PARTNERS LLC 0.36% of their portfolio | 56.7k $12.9m | Reduced -7.1k |
| TD Asset Management Inc 0.01% of their portfolio | 56.7k $12.9m | Added +35.2k |
| BARCLAYS PLC 0.00% of their portfolio | 53.9k $12.2m | Reduced -181.0k |
| KING LUTHER CAPITAL MANAGEMENT CORP 0.05% of their portfolio | 53.8k $12.2m | Reduced -1.3k |
| PRINCIPAL FINANCIAL GROUP INC 0.01% of their portfolio | 52.6k $11.9m | Reduced -3.6k |
| FRONTIER CAPITAL MANAGEMENT CO LLC 0.11% of their portfolio | 50.9k $11.6m | Added +2.9k |