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 ($36.6m this quarter). Holder counts are more reliable. Shares outstanding: 379.3m as of 2025-07-29, 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 ≈ $73.42. Options: 10 managers hold calls ($13.6m notional), 9 hold puts ($6.7m).
Trends to Q2 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 |
| Q2 2025 | 923 |
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 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 |
| Q2 2025 | 442 | 417 |
Calls vs puts
Options held, notional value, last 4 quarters. P/C = puts ÷ calls
Numbers
| Quarter | Calls | Puts | P/C |
|---|---|---|---|
| Q3 2024 | $14.0m | $10.4m | 0.74 |
| Q4 2024 | $10.4m | $6.7m | 0.64 |
| Q1 2025 | $17.6m | $8.4m | 0.48 |
| Q2 2025 | $13.6m | $6.7m | 0.49 |
Biggest buyers
| Balyasny Asset Management L.P. | New | +2.6m |
| ROYAL BANK OF CANADA | Added | +1.6m |
| BlackRock, Inc. | Added | +1.1m |
| Freestone Grove Partners LP | New | +858.2k |
| VANGUARD GROUP INC | Added | +625.7k |
| JPMORGAN CHASE & CO | Added | +577.9k |
| Holocene Advisors, LP | New | +403.1k |
| Woodline Partners LP | Added | +370.4k |
| GEODE CAPITAL MANAGEMENT, LLC | Added | +289.2k |
| ADAGE CAPITAL PARTNERS GP, L.L.C. | New | +274.5k |
Biggest sellers
| MORGAN STANLEY | Reduced | -2.6m |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | Reduced | -2.1m |
| BANK OF AMERICA CORP /DE/ | Reduced | -800.2k |
| MANUFACTURERS LIFE INSURANCE COMPANY, THE | Reduced | -701.5k |
| KAYNE ANDERSON RUDNICK INVESTMENT MANAGEMENT LLC | Reduced | -691.2k |
| JANUS HENDERSON GROUP PLC | Reduced | -566.9k |
| MARSHALL WACE, LLP | Reduced | -564.9k |
| FIRST TRUST ADVISORS LP | Reduced | -511.9k |
| Invesco Ltd. | Reduced | -494.9k |
| BNP PARIBAS FINANCIAL MARKETS | Reduced | -408.7k |
Biggest calls
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Reduced | $7.5m102.2k shares |
| CITADEL ADVISORS LLC | Reduced | $2.3m31.9k shares |
| IMC-Chicago, LLC | New | $1.2m16.8k shares |
| GROUP ONE TRADING LLC | Added | $734.7k10.0k shares |
| Walleye Trading LLC | Added | $551.0k7.5k shares |
| JANE STREET GROUP, LLC | Unchanged | $529.0k7.2k shares |
| SIMPLEX TRADING, LLC | Reduced | $367.0k5.0k shares |
| PUFF WEALTH MANAGEMENT, LLC | Unchanged | $227.8k3.1k shares |
| Walleye Capital LLC | New | $124.9k1.7k shares |
| CONCOURSE FINANCIAL GROUP SECURITIES, INC. | Unchanged | $00 shares |
Biggest puts
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Reduced | $3.4m45.8k shares |
| CITADEL ADVISORS LLC | Added | $1.8m25.0k shares |
| Maven Securities LTD | Reduced | $426.1k5.8k shares |
| Arrowpoint Investment Partners (Singapore) Pte. Ltd. | Reduced | $337.4k4.6k shares |
| SIMPLEX TRADING, LLC | Added | $279.0k3.8k shares |
| Walleye Capital LLC | New | $198.4k2.7k shares |
| Walleye Trading LLC | New | $161.6k2.2k shares |
| GROUP ONE TRADING LLC | Added | $102.9k1.4k 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 Q2 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 Q2 2025.
Holders, Q2 2025
| Manager | Shares | Change |
|---|---|---|
| VANGUARD GROUP INC 0.04% of their portfolio | 37.0m $2.7bn | Added +625.7k |
| BlackRock, Inc. 0.04% of their portfolio | 25.2m $1.9bn | Added +1.1m |
| STATE STREET CORP 0.04% of their portfolio | 14.8m $1.1bn | Reduced -229.3k |
| MORGAN STANLEY 0.06% of their portfolio | 13.2m $972.5m | Reduced -2.6m |
| KAYNE ANDERSON RUDNICK INVESTMENT MANAGEMENT LLC 1.95% of their portfolio | 11.1m $815.3m | Reduced -691.2k |
| GEODE CAPITAL MANAGEMENT, LLC 0.04% of their portfolio | 8.2m $599.3m | Added +289.2k |
| JANUS HENDERSON GROUP PLC 0.29% of their portfolio | 8.1m $596.7m | Reduced -566.9k |
| JPMORGAN CHASE & CO 0.04% of their portfolio | 7.3m $534.4m | Added +577.9k |
| NORGES BANK 0.05% of their portfolio | 5.0m $367.9m | Added +250.2k |
| PRINCIPAL FINANCIAL GROUP INC 0.19% of their portfolio | 5.0m $367.3m | Reduced -23.1k |
| WELLS FARGO & COMPANY/MN 0.07% of their portfolio | 4.1m $298.7m | Reduced -41.5k |
| FIRST TRUST ADVISORS LP 0.23% of their portfolio | 4.0m $290.8m | Reduced -511.9k |
| Invesco Ltd. 0.05% of their portfolio | 3.7m $269.5m | Reduced -494.9k |
| ROYAL BANK OF CANADA 0.02% of their portfolio | 3.3m $241.9m | Added +1.6m |
| NORTHERN TRUST CORP 0.03% of their portfolio | 3.1m $226.4m | Reduced -156.2k |
| DIMENSIONAL FUND ADVISORS LP 0.05% of their portfolio | 3.1m $224.3m | Added +3.4k |
| Polar Capital Holdings Plc 1.13% of their portfolio | 2.9m $214.9m | Unchanged |
| ROYAL LONDON ASSET MANAGEMENT LTD 0.46% of their portfolio | 2.7m $201.2m | Added +121.0k |
| BANK OF AMERICA CORP /DE/ 0.02% of their portfolio | 2.7m $197.2m | Reduced -800.2k |
| 1832 Asset Management L.P. 0.34% of their portfolio | 2.6m $193.6m | Reduced -56.3k |
| UBS Group AG 0.04% of their portfolio | 2.6m $192.1m | Added +4.6k |
| Balyasny Asset Management L.P. 0.43% of their portfolio | 2.6m $188.2m | New |
| Legal & General Group Plc 0.04% of their portfolio | 2.1m $153.3m | Added +167.7k |
| MANUFACTURERS LIFE INSURANCE COMPANY, THE 0.13% of their portfolio | 2.0m $149.4m | Reduced -701.5k |
| Madison Asset Management, LLC 1.47% of their portfolio | 1.9m $136.2m | Added +11.6k |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC 0.02% of their portfolio | 1.8m $135.8m | Added +25.3k |
| AQR CAPITAL MANAGEMENT LLC 0.11% of their portfolio | 1.8m $131.3m | Added +245.3k |
| Bank of New York Mellon Corp 0.02% of their portfolio | 1.7m $126.5m | Reduced -150.8k |
| CHILTON INVESTMENT CO INC. 2.66% of their portfolio | 1.6m $119.8m | Added +14.0k |
| RAYMOND JAMES FINANCIAL INC 0.04% of their portfolio | 1.4m $103.7m | Reduced -67.9k |
| ENVESTNET ASSET MANAGEMENT INC 0.03% of their portfolio | 1.4m $101.3m | Reduced -143.4k |
| BARCLAYS PLC 0.04% of their portfolio | 1.4m $101.1m | Added +160.6k |
| TRUIST FINANCIAL CORP 0.14% of their portfolio | 1.3m $97.1m | Reduced -203.9k |
| EULAV Asset Management 2.23% of their portfolio | 1.3m $95.2m | Reduced -125.0k |
| CONFLUENCE INVESTMENT MANAGEMENT LLC 1.31% of their portfolio | 1.3m $92.9m | Reduced -38.6k |
| GOLDMAN SACHS GROUP INC 0.01% of their portfolio | 1.2m $87.1m | Reduced -357.5k |
| ANCHOR CAPITAL ADVISORS LLC 2.55% of their portfolio | 1.2m $87.0m | Reduced -51.2k |
| HSBC HOLDINGS PLC 0.06% of their portfolio | 1.2m $86.7m | Reduced -84.0k |
| California Public Employees Retirement System 0.06% of their portfolio | 1.2m $86.5m | Reduced -189.9k |
| Woodline Partners LP 0.45% of their portfolio | 1.1m $84.3m | Added +370.4k |
| NATIXIS ADVISORS, LLC 0.13% of their portfolio | 1.1m $82.6m | Added +145.4k |
| Dundas Partners LLP 5.74% of their portfolio | 1.1m $82.5m | Unchanged |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP 0.06% of their portfolio | 1.1m $78.9m | Reduced -290.4k |
| Maren Capital LLC 4.67% of their portfolio | 1.1m $77.5m | Added +1.1k |
| BRANDES INVESTMENT PARTNERS, LP 0.68% of their portfolio | 1.0m $75.4m | Reduced -68.7k |
| VICTORY CAPITAL MANAGEMENT INC 0.05% of their portfolio | 986.7k $72.5m | Reduced -7.7k |
| CAPTRUST FINANCIAL ADVISORS 0.16% of their portfolio | 958.4k $70.4m | Reduced -20.6k |
| Swiss National Bank 0.04% of their portfolio | 917.8k $67.4m | Added +58.0k |
| DEUTSCHE BANK AG\ 0.02% of their portfolio | 912.0k $67.0m | Reduced -169.7k |
| STIFEL FINANCIAL CORP 0.06% of their portfolio | 894.9k $65.7m | Reduced -2.2k |
| PARNASSUS INVESTMENTS, LLC 0.15% of their portfolio | 894.3k $65.7m | Reduced -83.9k |
| Freestone Grove Partners LP 0.48% of their portfolio | 858.2k $63.0m | New |
| Cornerstone Investment Partners, LLC 2.46% of their portfolio | 758.9k $55.8m | Added +14.4k |
| Amundi 0.02% of their portfolio | 755.3k $53.4m | Reduced -403.2k |
| BloombergSen Inc. 4.59% of their portfolio | 740.2k $54.4m | Reduced -9.1k |
| Sumitomo Mitsui Trust Group, Inc. 0.03% of their portfolio | 737.2k $54.2m | Added +4.4k |
| DANSKE BANK A/S 0.13% of their portfolio | 695.9k $51.1m | Reduced -81.1k |
| Coho Partners, Ltd. 3.73% of their portfolio | 681.2k $50.0m | Reduced -126.6k |
| RHUMBLINE ADVISERS 0.04% of their portfolio | 657.0k $48.3m | Added +3.7k |
| Nuveen, LLC 0.01% of their portfolio | 642.8k $47.2m | Added +21.5k |
| Mraz, Amerine & Associates, Inc. 7.45% of their portfolio | 632.2k $46.4m | Reduced -1.4k |
| JACOBS LEVY EQUITY MANAGEMENT, INC 0.18% of their portfolio | 608.8k $44.7m | Reduced -217.8k |
| Mitsubishi UFJ Asset Management Co., Ltd. 0.03% of their portfolio | 581.8k $42.7m | Added +48.6k |
| National Pension Service 0.04% of their portfolio | 576.1k $42.3m | Added +3.4k |
| TD Asset Management Inc 0.03% of their portfolio | 555.6k $40.8m | Reduced -40.9k |
| Aware Super Pty Ltd as trustee of Aware Super 0.59% of their portfolio | 543.0k $39.9m | Unchanged |
| APG Asset Management N.V. 0.10% of their portfolio | 527.1k $33.0m | Reduced -39.2k |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. 0.09% of their portfolio | 522.1k $38.4m | Reduced -325.1k |
| Rockefeller Capital Management L.P. 0.04% of their portfolio | 500.7k $36.8m | Added +241.2k |
| AMERICAN CENTURY COMPANIES INC 0.02% of their portfolio | 472.8k $34.7m | Reduced -163.9k |
| SCHRODER INVESTMENT MANAGEMENT GROUP 0.03% of their portfolio | 457.9k $33.6m | Reduced -39.1k |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC 0.01% of their portfolio | 444.9k $32.7m | Reduced -2.1m |
| PRICE T ROWE ASSOCIATES INC /MD/ 0.00% of their portfolio | 436.7k $32.1m | Reduced -3.4k |
| PUBLIC EMPLOYEES RETIREMENT ASSOCIATION OF COLORADO 0.12% of their portfolio | 424.6k $31.2m | Unchanged |
| Wallington Asset Management, LLC 4.20% of their portfolio | 406.8k $29.9m | Added +4.0k |
| Holocene Advisors, LP 0.07% of their portfolio | 403.1k $29.6m | New |
| CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM 0.03% of their portfolio | 399.5k $29.4m | Reduced -26.6k |
| America First Investment Advisors, LLC 5.65% of their portfolio | 385.6k $28.3m | Reduced -27.8k |
| Caisse de depot et placement du Quebec 0.06% of their portfolio | 380.3k $27.9m | Added +42.6k |
| Russell Investments Group, Ltd. 0.03% of their portfolio | 359.6k $26.4m | Reduced -174.8k |
| STATE BOARD OF ADMINISTRATION OF FLORIDA RETIREMENT SYSTEM 0.05% of their portfolio | 359.2k $26.4m | Added +3.9k |
| Cerity Partners LLC 0.05% of their portfolio | 356.4k $26.2m | Reduced -30.7k |
| TEACHER RETIREMENT SYSTEM OF TEXAS 0.11% of their portfolio | 348.0k $25.6m | Reduced -100.3k |
| STANSBERRY ASSET MANAGEMENT, LLC 2.70% of their portfolio | 336.2k $24.7m | Reduced -89.9k |
| CHURCHILL MANAGEMENT Corp 0.27% of their portfolio | 333.2k $24.5m | Reduced -824 |
| ALLIANCEBERNSTEIN L.P. 0.01% of their portfolio | 331.2k $24.3m | Reduced -28.7k |
| LPL Financial LLC 0.01% of their portfolio | 331.0k $24.3m | Reduced -20.9k |
| CITIGROUP INC 0.02% of their portfolio | 330.9k $24.3m | Reduced -158.2k |
| ZACKS INVESTMENT MANAGEMENT 0.20% of their portfolio | 319.7k $23.5m | Added +865 |
| BNP PARIBAS FINANCIAL MARKETS 0.02% of their portfolio | 319.3k $23.5m | Reduced -408.7k |
| STATE OF WISCONSIN INVESTMENT BOARD 0.06% of their portfolio | 314.7k $23.1m | Added +107.1k |
| NATIONAL BANK OF CANADA /FI/ 0.02% of their portfolio | 309.3k $22.7m | Reduced -16.8k |
| CWM, LLC 0.08% of their portfolio | 306.5k $22.5m | Reduced -15.4k |
| SEI INVESTMENTS CO 0.02% of their portfolio | 281.0k $20.6m | Added +16.6k |
| ADAGE CAPITAL PARTNERS GP, L.L.C. 0.03% of their portfolio | 274.5k $20.2m | New |
| STEPHENS INC /AR/ 0.27% of their portfolio | 270.5k $19.9m | Added +1.8k |
| Mitsubishi UFJ Trust & Banking Corp 0.04% of their portfolio | 262.1k $19.3m | Added +381 |
| FAIRHOLME CAPITAL MANAGEMENT LLC 1.57% of their portfolio | 261.4k $19.2m | Unchanged |
| BARLOW WEALTH PARTNERS, LLC 2.21% of their portfolio | 261.1k $18.5m | Added +2.1k |
| CANADA LIFE ASSURANCE Co 0.03% of their portfolio | 260.9k $19.2m | Added +41.8k |