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 ($83.7m this quarter). Holder counts are more reliable. Shares outstanding: 257.5m as of 2023-07-27, 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 ≈ $59.45. Options: 6 managers hold calls ($3.7m notional), 5 hold puts ($4.9m).
Trends to Q2 2023
Institutional holders
Managers reporting a position, each quarter
Numbers
| Quarter | Holders |
|---|---|
| Q3 2022 | 667 |
| Q4 2022 | 715 |
| Q1 2023 | 692 |
| Q2 2023 | 660 |
Buyers vs sellers
Managers adding to or starting a position, vs cutting or selling out
Numbers
| Quarter | Bought or added | Cut or sold out |
|---|---|---|
| Q4 2022 | 345 | 281 |
| Q1 2023 | 338 | 340 |
| Q2 2023 | 282 | 364 |
Calls vs puts
Options held, notional value, last 4 quarters. P/C = puts ÷ calls
Numbers
| Quarter | Calls | Puts | P/C |
|---|---|---|---|
| Q3 2022 | $3.2m | $1.2m | 0.38 |
| Q4 2022 | $6.5m | $2.4m | 0.38 |
| Q1 2023 | $3.8m | $3.1m | 0.82 |
| Q2 2023 | $3.7m | $4.9m | 1.33 |
Biggest buyers
| JPMORGAN CHASE & CO | Added | +1.4m |
| VICTORY CAPITAL MANAGEMENT INC | Added | +1.3m |
| TORONTO DOMINION BANK | Added | +826.9k |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | Added | +733.5k |
| MORGAN STANLEY | Added | +710.4k |
| ANCHOR CAPITAL ADVISORS LLC | Added | +657.3k |
| CITADEL ADVISORS LLC | Added | +588.4k |
| STATE STREET CORP | Added | +515.7k |
| TWO SIGMA INVESTMENTS, LP | Added | +475.0k |
| Man Group plc | New | +462.2k |
Biggest sellers
| Capital World Investors | Sold out | -2.2m |
| CITIGROUP INC | Reduced | -2.0m |
| ENVESTNET ASSET MANAGEMENT INC | Reduced | -1.5m |
| Invesco Ltd. | Reduced | -1.3m |
| FMR LLC | Reduced | -1.1m |
| First Eagle Investment Management, LLC | Reduced | -1.1m |
| MILLENNIUM MANAGEMENT LLC | Reduced | -1.1m |
| Man Group plc | Sold out | -833.6k |
| VANGUARD GROUP INC | Reduced | -670.1k |
| DEUTSCHE BANK AG\ | Reduced | -591.9k |
Biggest calls
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Added | $2.2m36.3k shares |
| CITADEL ADVISORS LLC | Added | $941.0k15.8k shares |
| JANE STREET GROUP, LLC | New | $482.4k8.1k shares |
| SIMPLEX TRADING, LLC | Reduced | $77.0k1.3k shares |
| GROUP ONE TRADING LLC | New | $6.0k100 shares |
| CONCOURSE FINANCIAL GROUP SECURITIES, INC. | Unchanged | $00 shares |
Biggest puts
| PEAK6 Investments LLC | Added | $2.1m35.9k shares |
| CITADEL ADVISORS LLC | Reduced | $970.8k16.3k shares |
| SIMPLEX TRADING, LLC | Added | $911.0k15.3k shares |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Added | $857.7k14.4k 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 2023
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 |
|---|---|---|---|---|---|
| Q3 2021 | 0 | — | 0 | — | — |
| Q4 2021 | 1 | $706 | 1 | $2.0m | — |
| Q1 2022 | 0 | — | 0 | — | — |
| Q2 2022 | 0 | — | 0 | — | — |
| Q3 2022 | 2 | $372.2k | 0 | — | — |
| Q4 2022 | 0 | — | 0 | — | — |
| Q1 2023 | 0 | — | 0 | — | — |
| Q2 2023 | 0 | — | 0 | — | — |
None reported in Q2 2023.
Holders, Q2 2023
| Manager | Shares | Change |
|---|---|---|
| VANGUARD GROUP INC 0.03% of their portfolio | 24.8m $1.5bn | Reduced -670.1k |
| BlackRock Inc. 0.02% of their portfolio | 13.8m $822.9m | Reduced -550.0k |
| MORGAN STANLEY 0.07% of their portfolio | 12.5m $746.6m | Added +710.4k |
| STATE STREET CORP 0.03% of their portfolio | 10.8m $642.7m | Added +515.7k |
| JANUS HENDERSON GROUP PLC 0.25% of their portfolio | 6.6m $395.9m | Reduced -66.5k |
| KAYNE ANDERSON RUDNICK INVESTMENT MANAGEMENT LLC 1.09% of their portfolio | 6.5m $388.1m | Added +115.1k |
| VICTORY CAPITAL MANAGEMENT INC 0.32% of their portfolio | 4.9m $294.2m | Added +1.3m |
| GEODE CAPITAL MANAGEMENT, LLC 0.03% of their portfolio | 4.6m $271.7m | Added +70.2k |
| JPMORGAN CHASE & CO 0.03% of their portfolio | 4.1m $241.3m | Added +1.4m |
| FIRST TRUST ADVISORS LP 0.22% of their portfolio | 3.2m $191.7m | Added +439.8k |
| NORGES BANK 0.03% of their portfolio | 2.9m $172.7m | Added +121.2k |
| Invesco Ltd. 0.04% of their portfolio | 2.4m $145.0m | Reduced -1.3m |
| 1832 Asset Management L.P. 0.23% of their portfolio | 2.0m $120.5m | Added +396.8k |
| Polar Capital Holdings Plc 0.82% of their portfolio | 2.0m $119.1m | Added +162.5k |
| APG Asset Management N.V. 0.21% of their portfolio | 1.9m $105.4m | Reduced -53.4k |
| NORTHERN TRUST CORP 0.02% of their portfolio | 1.9m $113.4m | Reduced -96.5k |
| MILLENNIUM MANAGEMENT LLC 0.12% of their portfolio | 1.9m $111.4m | Reduced -1.1m |
| DIMENSIONAL FUND ADVISORS LP 0.03% of their portfolio | 1.8m $104.6m | Added +143.6k |
| Bank of New York Mellon Corp 0.02% of their portfolio | 1.7m $100.4m | Reduced -41.0k |
| WELLS FARGO & COMPANY/MN 0.03% of their portfolio | 1.6m $96.8m | Added +110.8k |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC 0.03% of their portfolio | 1.6m $95.1m | Reduced -22.5k |
| GOLDMAN SACHS GROUP INC 0.02% of their portfolio | 1.6m $93.0m | Added +377.6k |
| Legal & General Group Plc 0.03% of their portfolio | 1.5m $90.7m | Reduced -35.2k |
| CITADEL ADVISORS LLC 0.10% of their portfolio | 1.5m $88.4m | Added +588.4k |
| BANK OF AMERICA CORP /DE/ 0.01% of their portfolio | 1.4m $85.0m | Reduced -381.2k |
| WELLINGTON MANAGEMENT GROUP LLP 0.01% of their portfolio | 1.0m $60.6m | Reduced -51.0k |
| TORONTO DOMINION BANK 0.04% of their portfolio | 957.3k $57.0m | Added +826.9k |
| D. E. Shaw & Co., Inc. 0.09% of their portfolio | 951.7k $56.7m | Added +377.6k |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC 0.03% of their portfolio | 906.0k $56.4m | Unchanged |
| EULAV Asset Management 2.01% of their portfolio | 905.5k $53.9m | Added +204.0k |
| CREDIT SUISSE AG/ 0.05% of their portfolio | 895.1k $53.3m | Added +66.3k |
| ANCHOR CAPITAL ADVISORS LLC 1.37% of their portfolio | 885.9k $52.8m | Added +657.3k |
| BARCLAYS PLC 0.03% of their portfolio | 882.6k $52.6m | Added +345.1k |
| HSBC HOLDINGS PLC 0.06% of their portfolio | 872.7k $52.0m | Added +225.2k |
| Nuveen Asset Management, LLC 0.02% of their portfolio | 871.6k $51.9m | Reduced -52.2k |
| ROYAL BANK OF CANADA 0.01% of their portfolio | 800.3k $47.7m | Added +49.2k |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP 0.06% of their portfolio | 784.5k $46.7m | Added +733.5k |
| CHILTON INVESTMENT CO INC. 1.35% of their portfolio | 776.6k $46.3m | Added +5.6k |
| DEUTSCHE BANK AG\ 0.02% of their portfolio | 772.9k $46.0m | Reduced -591.9k |
| Swiss National Bank 0.03% of their portfolio | 761.1k $45.3m | Reduced -81.8k |
| LOS ANGELES CAPITAL MANAGEMENT LLC 0.18% of their portfolio | 753.6k $44.9m | Reduced -248.6k |
| Madison Asset Management, LLC 0.64% of their portfolio | 736.1k $43.8m | Reduced -1.6k |
| Allspring Global Investments Holdings, LLC 0.07% of their portfolio | 706.1k $42.1m | Reduced -35.8k |
| VOLORIDGE INVESTMENT MANAGEMENT, LLC 0.20% of their portfolio | 705.3k $42.0m | Added +81.4k |
| RAYMOND JAMES & ASSOCIATES 0.03% of their portfolio | 704.0k $41.9m | Added +89.9k |
| BOSTON FINANCIAL MANGEMENT LLC 1.51% of their portfolio | 700.6k $41.7m | Reduced -7.6k |
| TRUIST FINANCIAL CORP 0.07% of their portfolio | 669.3k $39.9m | Added +67.3k |
| Point72 Asset Management, L.P. 0.13% of their portfolio | 643.0k $38.3m | Reduced -545.9k |
| TWO SIGMA INVESTMENTS, LP 0.10% of their portfolio | 640.9k $38.2m | Added +475.0k |
| CONFLUENCE INVESTMENT MANAGEMENT LLC 0.54% of their portfolio | 626.4k $37.3m | Reduced -3.6k |
| AQR CAPITAL MANAGEMENT LLC 0.08% of their portfolio | 623.0k $36.9m | Added +90.6k |
| WORLDQUANT MILLENNIUM ADVISORS LLC 0.62% of their portfolio | 613.4k $36.5m | Added +84.4k |
| ENVESTNET ASSET MANAGEMENT INC 0.01% of their portfolio | 567.8k $33.8m | Reduced -1.5m |
| BloombergSen Inc. 2.95% of their portfolio | 559.6k $33.3m | Reduced -517.7k |
| Sumitomo Mitsui Trust Group, Inc. 0.03% of their portfolio | 558.0k $33.2m | Reduced -113.1k |
| Russell Investments Group, Ltd. 0.06% of their portfolio | 546.5k $32.5m | Added +132.2k |
| SEGALL BRYANT & HAMILL, LLC 0.34% of their portfolio | 546.2k $32.5m | Added +96.9k |
| UBS Group AG 0.01% of their portfolio | 505.4k $30.1m | Added +114.9k |
| RENAISSANCE TECHNOLOGIES LLC 0.04% of their portfolio | 489.8k $29.2m | Reduced -356.2k |
| Man Group plc 0.09% of their portfolio | 462.2k $27.5m | New |
| STIFEL FINANCIAL CORP 0.04% of their portfolio | 456.4k $27.2m | Reduced -19.8k |
| NUANCE INVESTMENTS, LLC 0.57% of their portfolio | 450.3k $26.8m | New |
| Dundas Partners LLP 2.51% of their portfolio | 447.4k $26.6m | Unchanged |
| RHUMBLINE ADVISERS 0.03% of their portfolio | 447.1k $26.6m | Added +10.9k |
| Mraz, Amerine & Associates, Inc. 5.82% of their portfolio | 416.0k $24.8m | Added +18.7k |
| NEW YORK STATE COMMON RETIREMENT FUND 0.03% of their portfolio | 413.4k $24.6m | Added +21.5k |
| BRANDES INVESTMENT PARTNERS, LP 0.49% of their portfolio | 409.4k $24.4m | Added +325.9k |
| Connor, Clark & Lunn Investment Management Ltd. 0.12% of their portfolio | 406.3k $24.2m | Added +302.4k |
| FIL Ltd 0.03% of their portfolio | 401.9k $23.9m | Reduced -64.8k |
| JACOBS LEVY EQUITY MANAGEMENT, INC 0.13% of their portfolio | 390.3k $23.2m | Reduced -10.2k |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP 0.04% of their portfolio | 378.0k $22.5m | Added +242.0k |
| CITIGROUP INC 0.03% of their portfolio | 368.0k $21.9m | Reduced -2.0m |
| California Public Employees Retirement System 0.02% of their portfolio | 365.7k $21.8m | Reduced -35.8k |
| Qube Research & Technologies Ltd 0.08% of their portfolio | 358.1k $21.3m | Reduced -370.7k |
| CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM 0.03% of their portfolio | 345.1k $20.6m | Reduced -3.1k |
| First Eagle Investment Management, LLC 0.05% of their portfolio | 334.3k $19.9m | Reduced -1.1m |
| State of Tennessee, Department of Treasury 0.08% of their portfolio | 328.2k $19.5m | Reduced -25.6k |
| CWM, LLC 0.12% of their portfolio | 326.6k $19.5m | Reduced -19.2k |
| Cubist Systematic Strategies, LLC 0.21% of their portfolio | 319.4k $19.0m | Reduced -213.1k |
| Allianz Asset Management GmbH 0.04% of their portfolio | 303.7k $18.1m | Reduced -265.3k |
| TUDOR INVESTMENT CORP ET AL 0.29% of their portfolio | 296.1k $17.6m | Added +212.3k |
| ALLIANCEBERNSTEIN L.P. 0.01% of their portfolio | 296.0k $17.6m | Reduced -35.6k |
| MARTINGALE ASSET MANAGEMENT L P 0.34% of their portfolio | 289.7k $17.3m | Reduced -11.8k |
| America First Investment Advisors, LLC 4.61% of their portfolio | 287.9k $17.1m | Added +251 |
| Brandywine Global Investment Management, LLC 0.14% of their portfolio | 286.4k $17.1m | Reduced -340.9k |
| PUBLIC EMPLOYEES RETIREMENT ASSOCIATION OF COLORADO 0.08% of their portfolio | 273.1k $16.3m | Added +247.5k |
| Amundi 0.01% of their portfolio | 269.6k $16.1m | Added +45.7k |
| TEACHER RETIREMENT SYSTEM OF TEXAS 0.11% of their portfolio | 266.1k $15.8m | Reduced -56.2k |
| PRICE T ROWE ASSOCIATES INC /MD/ 0.00% of their portfolio | 264.6k $15.8m | Reduced -2.1k |
| Wallington Asset Management, LLC 2.80% of their portfolio | 262.4k $15.6m | Reduced -735 |
| TWO SIGMA ADVISERS, LP 0.04% of their portfolio | 262.1k $15.6m | Added +254.2k |
| CRAMER ROSENTHAL MCGLYNN LLC 0.77% of their portfolio | 259.5k $15.5m | Reduced -25.5k |
| KBC Group NV 0.06% of their portfolio | 256.3k $15.3m | Reduced -105.1k |
| STATE BOARD OF ADMINISTRATION OF FLORIDA RETIREMENT SYSTEM 0.03% of their portfolio | 242.5k $14.4m | Reduced -8.8k |
| FMR LLC 0.00% of their portfolio | 239.0k $14.2m | Reduced -1.1m |
| PRINCIPAL FINANCIAL GROUP INC 0.01% of their portfolio | 233.9k $13.9m | Reduced -16.0k |
| NEW YORK STATE TEACHERS RETIREMENT SYSTEM 0.03% of their portfolio | 231.5k $13.8m | Reduced -17.1k |
| AMERIPRISE FINANCIAL INC 0.00% of their portfolio | 227.4k $13.5m | Reduced -78.2k |
| STANSBERRY ASSET MANAGEMENT, LLC 2.43% of their portfolio | 223.1k $13.3m | Added +138.2k |
| TD Asset Management Inc 0.02% of their portfolio | 221.3k $13.2m | Reduced -36.8k |