BERKLEY W R CORP WRB
COM · Common Stock · CUSIP 084423102 · ISIN US0844231029
Commercial lines property & casualty insurance holding company organized in Delaware and based in Greenwich, Connecticut
- SectorFinancials
- IndustryFire, Marine & Casualty Insurance
- HeadquartersGreenwich, CT
- Founded1967
- Websitewrberkley.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 ($46.2m this quarter). Holder counts are more reliable. Shares outstanding: 379.4m as of 2025-04-28, 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 ≈ $71.13. Options: 10 managers hold calls ($17.6m notional), 9 hold puts ($8.4m).
Trends to Q1 2025
Institutional holders
Managers reporting a position, each quarter
Numbers
| Quarter | Holders |
|---|---|
| Q3 2022 | 667 |
| Q4 2022 | 715 |
| Q1 2023 | 692 |
| Q2 2023 | 660 |
| Q3 2023 | 667 |
| Q4 2023 | 728 |
| Q1 2024 | 772 |
| Q2 2024 | 760 |
| Q3 2024 | 801 |
| Q4 2024 | 875 |
| Q1 2025 | 915 |
Buyers vs sellers
Managers adding to or starting a position, vs cutting or selling out
Numbers
| Quarter | Bought or added | Cut or sold out |
|---|---|---|
| Q2 2023 | 282 | 364 |
| Q3 2023 | 298 | 293 |
| Q4 2023 | 339 | 288 |
| Q1 2024 | 370 | 308 |
| Q2 2024 | 368 | 343 |
| Q3 2024 | 378 | 416 |
| Q4 2024 | 425 | 301 |
| Q1 2025 | 443 | 399 |
Calls vs puts
Options held, notional value, last 4 quarters. P/C = puts ÷ calls
Numbers
| Quarter | Calls | Puts | P/C |
|---|---|---|---|
| Q2 2024 | $56.3m | $7.2m | 0.13 |
| Q3 2024 | $14.0m | $10.4m | 0.74 |
| Q4 2024 | $10.4m | $6.7m | 0.64 |
| Q1 2025 | $17.6m | $8.4m | 0.48 |
Biggest buyers
| FIRST TRUST ADVISORS LP | Added | +3.7m |
| ROYAL LONDON ASSET MANAGEMENT LTD | Added | +2.4m |
| WELLS FARGO & COMPANY/MN | Added | +1.2m |
| CAPTRUST FINANCIAL ADVISORS | Added | +935.7k |
| UBS Group AG | Added | +904.7k |
| PRINCIPAL FINANCIAL GROUP INC | Added | +900.1k |
| Woodline Partners LP | Added | +759.1k |
| Cornerstone Investment Partners, LLC | Added | +734.5k |
| MARSHALL WACE, LLP | Added | +632.9k |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | Added | +552.7k |
Biggest sellers
| MORGAN STANLEY | Reduced | -2.6m |
| MANUFACTURERS LIFE INSURANCE COMPANY, THE | Reduced | -2.1m |
| JANUS HENDERSON GROUP PLC | Reduced | -1.3m |
| MILLENNIUM MANAGEMENT LLC | Reduced | -756.3k |
| GOLDMAN SACHS GROUP INC | Reduced | -605.2k |
| WELLINGTON MANAGEMENT GROUP LLP | Reduced | -397.2k |
| JPMORGAN CHASE & CO | Reduced | -396.9k |
| Invesco Ltd. | Reduced | -389.7k |
| Coho Partners, Ltd. | Reduced | -320.6k |
| Amundi | Reduced | -319.5k |
Biggest calls
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Added | $10.3m144.4k shares |
| CITADEL ADVISORS LLC | Added | $4.3m60.5k shares |
| Maven Securities LTD | Added | $861.0k12.1k shares |
| GROUP ONE TRADING LLC | Added | $555.0k7.8k shares |
| SIMPLEX TRADING, LLC | Added | $540.0k7.6k shares |
| JANE STREET GROUP, LLC | Added | $512.4k7.2k shares |
| Arrowpoint Investment Partners (Singapore) Pte. Ltd. | New | $284.6k4.0k shares |
| PUFF WEALTH MANAGEMENT, LLC | New | $220.6k3.1k shares |
| Walleye Trading LLC | Added | $92.5k1.3k shares |
| CONCOURSE FINANCIAL GROUP SECURITIES, INC. | Unchanged | $00 shares |
Biggest puts
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Added | $3.4m48.4k shares |
| Balyasny Asset Management L.P. | New | $2.8m40.0k shares |
| Maven Securities LTD | Added | $1.1m15.0k shares |
| CITADEL ADVISORS LLC | Reduced | $633.3k8.9k shares |
| Arrowpoint Investment Partners (Singapore) Pte. Ltd. | New | $355.8k5.0k shares |
| GROUP ONE TRADING LLC | Added | $35.6k500 shares |
| SIMPLEX TRADING, LLC | Reduced | $14.0k200 shares |
| Quaker Wealth Management, LLC | First filing | $5708 shares |
| CONCOURSE FINANCIAL GROUP SECURITIES, INC. | Unchanged | $00 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 |
|---|---|
BERKLEY WILLIAM R JR
13D · may seek influence
filed 2026-07-21
Stated purposeItem 4 is hereby amended by replacing the first paragraph with the following: Calculations of the Reporting Persons' beneficial ownership on the cover pages and in Item 5(a) of this Statement are based on 372,276,732 shares of Common Stock outstanding as of April 27, 2026, as reported in the Issuer's Form 10-Q filed with the Securities and Exchange Commission on May 1, 2026. Full filing |
25.7% |
BERKLEY WILLIAM R
13D · may seek influence
+0.4 pts · filed 2026-03-05
Stated purposeItem 4 is hereby amended by replacing the first paragraph with the following: Calculations of the Reporting Persons' beneficial ownership on the cover pages and in Item 5(a) of this Statement are based on 374,490,856 shares of Common Stock outstanding as of February 23, 2026, as reported in the Issuer's Form 10-K filed with the Securities and Exchange Commission on February 27, 2026. However, when calculating MSI's percentage ownership for certain purposes under the Framework Agreement and LLC Agreement, MSI uses as its denominator 391,869,666 shares of Common Stock, which comprises such number of shares of Common Stock outstanding as of February 23, 2026 and 17,378,810 shares of Common Stock held in a grantor trust as of December 31, 2025, each as reported in the Issuer's Form 10-K filed… Full filing |
25.5% |
MITSUI SUMITOMO INSURANCE CO LTD
13D · may seek influence
+0.1 pts · filed 2026-06-04
Stated purposeItem 4 is hereby amended by replacing the second to last paragraph of Item 4 with the following: In connection with MSI's acquisition of fifteen percent (15%) of the Outstanding Agreement Shares, MSI designated Andrew Carrier, an executive officer of MSI, to serve as a director of the Issuer. Mr. Carrier was nominated to the slate of directors up for election to the Issuer's Board at the Issuer's 2026 annual meeting by the Issuer's Board following the recommendation of the Issuer's Nominating and Corporate Governance Committee to the Board. On June 3, 2026, Mr. Carrier was elected to the Board at the annual meeting of stockholders of the Issuer. Mr. Carrier was designated by MSI pursuant to the terms of the Framework Agreement. Full filing |
15.8% |
| VANGUARD CAPITAL MANAGEMENT LLC 13G · institution new · filed 2026-04-30 | 5.8% |
Fell to 5% or below in the last year: BlackRock, Inc. (4.6%, 2026-10-27), VANGUARD GROUP INC (0.0%, 2026-03-27; now reported by VANGUARD CAPITAL MANAGEMENT LLC)
Insider purchases and sales in Q1 2025
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.
None reported in Q1 2025.
Holders, Q1 2025
| Manager | Shares | Change |
|---|---|---|
| VANGUARD GROUP INC 0.05% of their portfolio | 36.3m $2.6bn | Reduced -100.4k |
| BlackRock, Inc. 0.04% of their portfolio | 24.2m $1.7bn | Reduced -201.4k |
| MORGAN STANLEY 0.08% of their portfolio | 15.8m $1.1bn | Reduced -2.6m |
| STATE STREET CORP 0.04% of their portfolio | 15.0m $1.1bn | Reduced -109.2k |
| KAYNE ANDERSON RUDNICK INVESTMENT MANAGEMENT LLC 2.05% of their portfolio | 11.8m $838.8m | Added +65.2k |
| JANUS HENDERSON GROUP PLC 0.34% of their portfolio | 8.7m $619.2m | Reduced -1.3m |
| GEODE CAPITAL MANAGEMENT, LLC 0.04% of their portfolio | 7.9m $560.4m | Added +205.4k |
| JPMORGAN CHASE & CO 0.04% of their portfolio | 6.7m $476.5m | Reduced -396.9k |
| PRINCIPAL FINANCIAL GROUP INC 0.20% of their portfolio | 5.0m $357.4m | Added +900.1k |
| NORGES BANK 0.05% of their portfolio | 4.8m $338.6m | Added +99.7k |
| FIRST TRUST ADVISORS LP 0.28% of their portfolio | 4.5m $318.1m | Added +3.7m |
| Invesco Ltd. 0.06% of their portfolio | 4.2m $296.3m | Reduced -389.7k |
| WELLS FARGO & COMPANY/MN 0.07% of their portfolio | 4.1m $292.3m | Added +1.2m |
| BANK OF AMERICA CORP /DE/ 0.02% of their portfolio | 3.5m $247.9m | Added +534.2k |
| NORTHERN TRUST CORP 0.03% of their portfolio | 3.2m $230.4m | Reduced -42.3k |
| DIMENSIONAL FUND ADVISORS LP 0.05% of their portfolio | 3.1m $217.1m | Reduced -68.9k |
| Polar Capital Holdings Plc 1.27% of their portfolio | 2.9m $208.1m | Unchanged |
| MANUFACTURERS LIFE INSURANCE COMPANY, THE 0.18% of their portfolio | 2.7m $194.6m | Reduced -2.1m |
| 1832 Asset Management L.P. 0.37% of their portfolio | 2.7m $191.5m | Reduced -142.8k |
| ROYAL LONDON ASSET MANAGEMENT LTD 0.44% of their portfolio | 2.6m $186.3m | Added +2.4m |
| UBS Group AG 0.04% of their portfolio | 2.6m $185.7m | Added +904.7k |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC 0.05% of their portfolio | 2.5m $180.7m | Added +52.6k |
| Legal & General Group Plc 0.04% of their portfolio | 1.9m $136.5m | Added +3.7k |
| Bank of New York Mellon Corp 0.03% of their portfolio | 1.9m $133.2m | Reduced -75.1k |
| Madison Asset Management, LLC 1.46% of their portfolio | 1.8m $131.1m | Added +160.0k |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC 0.02% of their portfolio | 1.8m $129.7m | Added +25.8k |
| ROYAL BANK OF CANADA 0.03% of their portfolio | 1.7m $118.7m | Reduced -105.3k |
| CHILTON INVESTMENT CO INC. 2.81% of their portfolio | 1.6m $115.1m | Added +38.9k |
| GOLDMAN SACHS GROUP INC 0.02% of their portfolio | 1.5m $109.8m | Reduced -605.2k |
| AQR CAPITAL MANAGEMENT LLC 0.11% of their portfolio | 1.5m $109.7m | Added +240.6k |
| TRUIST FINANCIAL CORP 0.17% of their portfolio | 1.5m $108.5m | Added +55.8k |
| ENVESTNET ASSET MANAGEMENT INC 0.03% of their portfolio | 1.5m $108.4m | Added +3.0k |
| RAYMOND JAMES FINANCIAL INC 0.04% of their portfolio | 1.5m $105.3m | Reduced -52.9k |
| EULAV Asset Management 2.50% of their portfolio | 1.4m $101.1m | Unchanged |
| California Public Employees Retirement System 0.07% of their portfolio | 1.4m $97.3m | Reduced -68.4k |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP 0.08% of their portfolio | 1.4m $97.1m | Added +552.7k |
| CONFLUENCE INVESTMENT MANAGEMENT LLC 1.33% of their portfolio | 1.3m $92.7m | Reduced -33.6k |
| HSBC HOLDINGS PLC 0.06% of their portfolio | 1.3m $90.0m | Reduced -154.9k |
| ANCHOR CAPITAL ADVISORS LLC 2.62% of their portfolio | 1.2m $87.9m | Reduced -60.8k |
| BARCLAYS PLC 0.04% of their portfolio | 1.2m $86.5m | Added +141.3k |
| Amundi 0.03% of their portfolio | 1.2m $81.4m | Reduced -319.5k |
| Dundas Partners LLP 5.89% of their portfolio | 1.1m $79.9m | Unchanged |
| BRANDES INVESTMENT PARTNERS, LP 0.79% of their portfolio | 1.1m $77.9m | Reduced -9.0k |
| DEUTSCHE BANK AG\ 0.03% of their portfolio | 1.1m $77.0m | Reduced -15.2k |
| Maren Capital LLC 5.12% of their portfolio | 1.1m $75.0m | Added +49.2k |
| VICTORY CAPITAL MANAGEMENT INC 0.07% of their portfolio | 994.3k $70.8m | Added +79.9k |
| NATIXIS ADVISORS, LLC 0.13% of their portfolio | 979.3k $69.7m | Added +143.3k |
| CAPTRUST FINANCIAL ADVISORS 0.17% of their portfolio | 979.0k $69.7m | Added +935.7k |
| PARNASSUS INVESTMENTS, LLC 0.17% of their portfolio | 978.2k $69.6m | Reduced -82.3k |
| STIFEL FINANCIAL CORP 0.07% of their portfolio | 897.1k $63.8m | Added +7.5k |
| Swiss National Bank 0.04% of their portfolio | 859.8k $61.2m | Reduced -300 |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. 0.16% of their portfolio | 847.2k $60.3m | Added +30.8k |
| JACOBS LEVY EQUITY MANAGEMENT, INC 0.23% of their portfolio | 826.6k $58.8m | Added +310.3k |
| Coho Partners, Ltd. 3.47% of their portfolio | 807.8k $57.5m | Reduced -320.6k |
| Woodline Partners LP 0.36% of their portfolio | 777.2k $55.3m | Added +759.1k |
| DANSKE BANK A/S 0.17% of their portfolio | 777.0k $55.3m | Added +355.1k |
| BloombergSen Inc. 4.61% of their portfolio | 749.3k $53.3m | Reduced -13.1k |
| Cornerstone Investment Partners, LLC 2.56% of their portfolio | 744.5k $53.0m | Added +734.5k |
| MARSHALL WACE, LLP 0.07% of their portfolio | 743.6k $52.9m | Added +632.9k |
| Sumitomo Mitsui Trust Group, Inc. 0.04% of their portfolio | 732.8k $52.1m | Reduced -5.3k |
| BNP PARIBAS FINANCIAL MARKETS 0.04% of their portfolio | 728.0k $51.8m | First filing |
| RHUMBLINE ADVISERS 0.04% of their portfolio | 653.3k $46.5m | Added +68.4k |
| AMERICAN CENTURY COMPANIES INC 0.03% of their portfolio | 636.7k $45.3m | Reduced -44.4k |
| Mraz, Amerine & Associates, Inc. 7.76% of their portfolio | 633.7k $45.2m | Reduced -6.9k |
| Nuveen, LLC 0.01% of their portfolio | 621.3k $44.2m | First filing |
| TD Asset Management Inc 0.04% of their portfolio | 596.6k $42.5m | Reduced -15.4k |
| National Pension Service 0.04% of their portfolio | 572.7k $40.8m | Added +13.9k |
| APG Asset Management N.V. 0.12% of their portfolio | 566.3k $37.3m | Reduced -110.9k |
| Aware Super Pty Ltd as trustee of Aware Super 0.66% of their portfolio | 543.0k $38.6m | Unchanged |
| Russell Investments Group, Ltd. 0.05% of their portfolio | 534.5k $38.0m | Added +63.2k |
| Mitsubishi UFJ Asset Management Co., Ltd. 0.03% of their portfolio | 533.2k $37.9m | Added +63.5k |
| SCHRODER INVESTMENT MANAGEMENT GROUP 0.04% of their portfolio | 497.0k $35.4m | Added +56.7k |
| CITIGROUP INC 0.03% of their portfolio | 489.1k $34.8m | Added +218.6k |
| TEACHER RETIREMENT SYSTEM OF TEXAS 0.13% of their portfolio | 448.2k $31.9m | Reduced -263.5k |
| PRICE T ROWE ASSOCIATES INC /MD/ 0.00% of their portfolio | 440.1k $31.3m | Added +12.4k |
| STANSBERRY ASSET MANAGEMENT, LLC 3.64% of their portfolio | 426.1k $30.3m | Added +13.3k |
| CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM 0.04% of their portfolio | 426.1k $30.3m | Added +13.1k |
| PUBLIC EMPLOYEES RETIREMENT ASSOCIATION OF COLORADO 0.13% of their portfolio | 424.6k $30.2m | Unchanged |
| America First Investment Advisors, LLC 6.20% of their portfolio | 413.3k $29.4m | Added +2.1k |
| Wallington Asset Management, LLC 4.13% of their portfolio | 402.8k $28.7m | Added +3.0k |
| Cerity Partners LLC 0.06% of their portfolio | 387.1k $27.5m | Added +46.1k |
| ALLIANCEBERNSTEIN L.P. 0.01% of their portfolio | 359.9k $25.6m | Added +2.4k |
| STATE BOARD OF ADMINISTRATION OF FLORIDA RETIREMENT SYSTEM 0.05% of their portfolio | 355.3k $25.3m | Reduced -8.7k |
| LPL Financial LLC 0.01% of their portfolio | 351.9k $25.0m | Added +16.3k |
| Caisse de depot et placement du Quebec 0.05% of their portfolio | 337.6k $24.0m | Reduced -118.8k |
| RENAISSANCE TECHNOLOGIES LLC 0.04% of their portfolio | 334.6k $23.8m | Added +204.6k |
| CHURCHILL MANAGEMENT Corp 0.30% of their portfolio | 334.0k $23.8m | Reduced -1.3k |
| NATIONAL BANK OF CANADA /FI/ 0.03% of their portfolio | 326.1k $23.2m | Reduced -73.7k |
| CWM, LLC 0.09% of their portfolio | 321.9k $22.9m | Reduced -5.6k |
| Qube Research & Technologies Ltd 0.04% of their portfolio | 321.2k $22.9m | Added +121.5k |
| ZACKS INVESTMENT MANAGEMENT 0.21% of their portfolio | 318.8k $22.7m | Added +10.5k |
| PhiloSmith Capital Corp 5.68% of their portfolio | 290.4k $20.7m | Unchanged |
| BANK OF MONTREAL /CAN/ 0.01% of their portfolio | 279.2k $19.9m | Reduced -67.2k |
| Pictet Asset Management Holding SA 0.02% of their portfolio | 274.3k $19.5m | Added +7.3k |
| STEPHENS INC /AR/ 0.28% of their portfolio | 268.7k $19.1m | Reduced -11.7k |
| SEI INVESTMENTS CO 0.02% of their portfolio | 264.3k $18.8m | Added +1.5k |
| ROYCE & ASSOCIATES LP 0.20% of their portfolio | 262.1k $18.6m | Unchanged |
| Mitsubishi UFJ Trust & Banking Corp 0.05% of their portfolio | 261.7k $18.6m | Reduced -9.5k |
| FAIRHOLME CAPITAL MANAGEMENT LLC 1.53% of their portfolio | 261.4k $18.6m | Unchanged |
| Rockefeller Capital Management L.P. 0.05% of their portfolio | 259.5k $18.5m | Added +11.4k |