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 ($51.8m this quarter). Holder counts are more reliable. Shares outstanding: 257.9m as of 2023-10-30, 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 ≈ $63.66. Options: 7 managers hold calls ($3.8m notional), 8 hold puts ($4.1m).
Trends to Q3 2023
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 |
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 |
| Q3 2023 | 298 | 293 |
Calls vs puts
Options held, notional value, last 4 quarters. P/C = puts ÷ calls
Numbers
| Quarter | Calls | Puts | P/C |
|---|---|---|---|
| Q4 2022 | $6.5m | $2.4m | 0.38 |
| Q1 2023 | $3.8m | $3.1m | 0.82 |
| Q2 2023 | $3.7m | $4.9m | 1.33 |
| Q3 2023 | $3.8m | $4.1m | 1.10 |
Biggest buyers
| JANUS HENDERSON GROUP PLC | Added | +1.6m |
| MANUFACTURERS LIFE INSURANCE COMPANY, THE | Added | +865.2k |
| California Public Employees Retirement System | Added | +782.3k |
| VICTORY CAPITAL MANAGEMENT INC | Added | +699.3k |
| MORGAN STANLEY | Added | +529.8k |
| National Pension Service | Added | +353.7k |
| CONFLUENCE INVESTMENT MANAGEMENT LLC | Added | +346.7k |
| Man Group plc | New | +346.4k |
| BANK OF AMERICA CORP /DE/ | Added | +334.0k |
| Assenagon Asset Management S.A. | New | +318.2k |
Biggest sellers
| MILLENNIUM MANAGEMENT LLC | Reduced | -898.5k |
| CITADEL ADVISORS LLC | Reduced | -777.5k |
| D. E. Shaw & Co., Inc. | Reduced | -720.0k |
| Point72 Asset Management, L.P. | Reduced | -640.7k |
| Man Group plc | Sold out | -462.2k |
| RENAISSANCE TECHNOLOGIES LLC | Reduced | -432.3k |
| VANGUARD GROUP INC | Reduced | -422.5k |
| TWO SIGMA INVESTMENTS, LP | Reduced | -343.6k |
| First Eagle Investment Management, LLC | Sold out | -334.3k |
| DEUTSCHE BANK AG\ | Reduced | -284.3k |
Biggest calls
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Reduced | $1.3m21.2k shares |
| CITADEL ADVISORS LLC | Added | $1.3m20.0k shares |
| JANE STREET GROUP, LLC | Added | $946.0k14.9k shares |
| CAPSTONE INVESTMENT ADVISORS, LLC | New | $120.6k1.9k shares |
| SIMPLEX TRADING, LLC | Reduced | $69.0k1.1k shares |
| GROUP ONE TRADING LLC | Unchanged | $6.3k100 shares |
| CONCOURSE FINANCIAL GROUP SECURITIES, INC. | Unchanged | $00 shares |
Biggest puts
| MILLENNIUM MANAGEMENT LLC | New | $1.4m22.6k shares |
| CITADEL ADVISORS LLC | Reduced | $831.7k13.1k shares |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Reduced | $742.8k11.7k shares |
| PEAK6 Investments LLC | Reduced | $679.3k10.7k shares |
| SIMPLEX TRADING, LLC | Reduced | $273.0k4.3k shares |
| CAPSTONE INVESTMENT ADVISORS, LLC | New | $139.7k2.2k shares |
| GROUP ONE TRADING LLC | New | $31.7k500 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 Q3 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 |
|---|---|---|---|---|---|
| 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 | — | — |
| Q3 2023 | 0 | — | 0 | — | — |
None reported in Q3 2023.
Holders, Q3 2023
| Manager | Shares | Change |
|---|---|---|
| VANGUARD GROUP INC 0.04% of their portfolio | 24.3m $1.5bn | Reduced -422.5k |
| BlackRock Inc. 0.02% of their portfolio | 13.6m $863.7m | Reduced -212.1k |
| MORGAN STANLEY 0.08% of their portfolio | 13.1m $829.5m | Added +529.8k |
| STATE STREET CORP 0.04% of their portfolio | 11.1m $711.8m | Added +316.9k |
| JANUS HENDERSON GROUP PLC 0.34% of their portfolio | 8.2m $522.2m | Added +1.6m |
| KAYNE ANDERSON RUDNICK INVESTMENT MANAGEMENT LLC 1.23% of their portfolio | 6.8m $432.9m | Added +302.2k |
| VICTORY CAPITAL MANAGEMENT INC 0.41% of their portfolio | 5.6m $358.0m | Added +699.3k |
| GEODE CAPITAL MANAGEMENT, LLC 0.04% of their portfolio | 4.7m $295.4m | Added +88.7k |
| JPMORGAN CHASE & CO 0.03% of their portfolio | 4.1m $257.4m | Added +2.6k |
| NORGES BANK 0.04% of their portfolio | 3.1m $196.8m | Added +200.2k |
| FIRST TRUST ADVISORS LP 0.22% of their portfolio | 3.0m $188.8m | Reduced -244.5k |
| Invesco Ltd. 0.04% of their portfolio | 2.4m $150.6m | Reduced -62.9k |
| APG Asset Management N.V. 0.28% of their portfolio | 2.1m $135.4m | Added +200.9k |
| 1832 Asset Management L.P. 0.27% of their portfolio | 2.0m $128.1m | Reduced -5.2k |
| NORTHERN TRUST CORP 0.02% of their portfolio | 2.0m $127.1m | Added +98.5k |
| Polar Capital Holdings Plc 0.91% of their portfolio | 1.9m $122.2m | Reduced -75.0k |
| DIMENSIONAL FUND ADVISORS LP 0.04% of their portfolio | 1.8m $114.0m | Added +38.9k |
| WELLS FARGO & COMPANY/MN 0.04% of their portfolio | 1.8m $113.7m | Added +165.8k |
| BANK OF AMERICA CORP /DE/ 0.01% of their portfolio | 1.8m $111.8m | Added +334.0k |
| Bank of New York Mellon Corp 0.02% of their portfolio | 1.7m $111.0m | Added +62.9k |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC 0.03% of their portfolio | 1.6m $103.7m | Added +37.0k |
| GOLDMAN SACHS GROUP INC 0.02% of their portfolio | 1.5m $94.3m | Reduced -76.7k |
| Legal & General Group Plc 0.03% of their portfolio | 1.5m $94.1m | Reduced -41.1k |
| California Public Employees Retirement System 0.06% of their portfolio | 1.1m $72.9m | Added +782.3k |
| ANCHOR CAPITAL ADVISORS LLC 1.84% of their portfolio | 1.0m $65.8m | Added +150.1k |
| MANUFACTURERS LIFE INSURANCE COMPANY, THE 0.04% of their portfolio | 1.0m $63.9m | Added +865.2k |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC 0.03% of their portfolio | 978.1k $62.1m | Added +72.1k |
| CONFLUENCE INVESTMENT MANAGEMENT LLC 0.96% of their portfolio | 973.1k $61.8m | Added +346.7k |
| MILLENNIUM MANAGEMENT LLC 0.06% of their portfolio | 972.5k $61.7m | Reduced -898.5k |
| EULAV Asset Management 2.19% of their portfolio | 945.3k $60.0m | Added +39.7k |
| HSBC HOLDINGS PLC 0.07% of their portfolio | 945.1k $60.1m | Added +72.5k |
| BARCLAYS PLC 0.04% of their portfolio | 933.3k $59.3m | Added +50.7k |
| WELLINGTON MANAGEMENT GROUP LLP 0.01% of their portfolio | 913.9k $58.0m | Reduced -103.5k |
| TORONTO DOMINION BANK 0.05% of their portfolio | 905.5k $57.5m | Reduced -51.8k |
| ROYAL BANK OF CANADA 0.02% of their portfolio | 904.1k $57.4m | Added +103.8k |
| Nuveen Asset Management, LLC 0.02% of their portfolio | 854.5k $54.3m | Reduced -17.1k |
| CREDIT SUISSE AG/ 0.06% of their portfolio | 853.2k $54.2m | Reduced -41.9k |
| CHILTON INVESTMENT CO INC. 1.65% of their portfolio | 816.5k $51.8m | Added +39.9k |
| UBS Group AG 0.02% of their portfolio | 802.4k $50.9m | Added +296.9k |
| LOS ANGELES CAPITAL MANAGEMENT LLC 0.22% of their portfolio | 799.1k $50.7m | Added +45.5k |
| RAYMOND JAMES & ASSOCIATES 0.04% of their portfolio | 769.0k $48.8m | Added +65.0k |
| ENVESTNET ASSET MANAGEMENT INC 0.02% of their portfolio | 758.3k $48.1m | Added +190.5k |
| Madison Asset Management, LLC 0.70% of their portfolio | 747.3k $47.4m | Added +11.3k |
| TRUIST FINANCIAL CORP 0.08% of their portfolio | 711.1k $45.1m | Added +41.8k |
| CITADEL ADVISORS LLC 0.05% of their portfolio | 706.9k $44.9m | Reduced -777.5k |
| BOSTON FINANCIAL MANGEMENT LLC 1.66% of their portfolio | 697.6k $44.3m | Reduced -2.9k |
| Swiss National Bank 0.03% of their portfolio | 671.1k $42.6m | Reduced -90.0k |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP 0.05% of their portfolio | 642.1k $40.8m | Reduced -142.4k |
| AQR CAPITAL MANAGEMENT LLC 0.08% of their portfolio | 603.5k $38.3m | Reduced -19.5k |
| STIFEL FINANCIAL CORP 0.05% of their portfolio | 590.6k $37.5m | Added +134.2k |
| Dundas Partners LLP 3.52% of their portfolio | 564.8k $35.9m | Added +117.4k |
| BloombergSen Inc. 3.08% of their portfolio | 546.7k $34.7m | Reduced -12.9k |
| Sumitomo Mitsui Trust Group, Inc. 0.03% of their portfolio | 537.9k $34.2m | Reduced -20.1k |
| VOLORIDGE INVESTMENT MANAGEMENT, LLC 0.17% of their portfolio | 532.7k $33.8m | Reduced -172.7k |
| SEGALL BRYANT & HAMILL, LLC 0.37% of their portfolio | 501.8k $31.9m | Reduced -44.4k |
| DEUTSCHE BANK AG\ 0.02% of their portfolio | 488.5k $31.0m | Reduced -284.3k |
| BRANDES INVESTMENT PARTNERS, LP 0.58% of their portfolio | 465.2k $29.5m | Added +55.9k |
| Allspring Global Investments Holdings, LLC 0.05% of their portfolio | 458.7k $29.1m | Reduced -247.4k |
| Russell Investments Group, Ltd. 0.06% of their portfolio | 448.8k $28.5m | Reduced -97.7k |
| Mraz, Amerine & Associates, Inc. 6.26% of their portfolio | 437.6k $27.8m | Added +21.6k |
| RHUMBLINE ADVISERS 0.03% of their portfolio | 434.6k $27.6m | Reduced -12.6k |
| Allianz Asset Management GmbH 0.05% of their portfolio | 418.6k $26.6m | Added +114.9k |
| WORLDQUANT MILLENNIUM ADVISORS LLC 0.41% of their portfolio | 413.7k $26.3m | Reduced -199.8k |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP 0.04% of their portfolio | 380.0k $24.1m | Added +2.0k |
| NEW YORK STATE COMMON RETIREMENT FUND 0.03% of their portfolio | 372.4k $23.6m | Reduced -40.9k |
| NUANCE INVESTMENTS, LLC 0.58% of their portfolio | 370.6k $23.5m | Reduced -79.7k |
| National Pension Service 0.04% of their portfolio | 354.1k $22.8m | Added +353.7k |
| Man Group plc 0.07% of their portfolio | 346.4k $22.0m | New |
| Amundi 0.01% of their portfolio | 334.9k $21.4m | Added +65.2k |
| JACOBS LEVY EQUITY MANAGEMENT, INC 0.12% of their portfolio | 321.8k $20.4m | Reduced -68.5k |
| CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM 0.03% of their portfolio | 320.4k $20.3m | Reduced -24.7k |
| Assenagon Asset Management S.A. 0.07% of their portfolio | 318.2k $20.2m | New |
| CANADA PENSION PLAN INVESTMENT BOARD 0.03% of their portfolio | 302.4k $19.2m | Added +147.0k |
| CWM, LLC 0.12% of their portfolio | 300.3k $19.1m | Reduced -26.4k |
| Connor, Clark & Lunn Investment Management Ltd. 0.10% of their portfolio | 298.1k $18.9m | Reduced -108.2k |
| TWO SIGMA INVESTMENTS, LP 0.05% of their portfolio | 297.3k $18.9m | Reduced -343.6k |
| America First Investment Advisors, LLC 5.10% of their portfolio | 289.3k $18.4m | Added +1.4k |
| ALLIANCEBERNSTEIN L.P. 0.01% of their portfolio | 288.6k $18.3m | Reduced -7.4k |
| TD Asset Management Inc 0.02% of their portfolio | 279.9k $17.8m | Added +58.6k |
| PUBLIC EMPLOYEES RETIREMENT ASSOCIATION OF COLORADO 0.09% of their portfolio | 269.8k $17.1m | Reduced -3.3k |
| Qube Research & Technologies Ltd 0.05% of their portfolio | 266.9k $16.9m | Reduced -91.2k |
| PRICE T ROWE ASSOCIATES INC /MD/ 0.00% of their portfolio | 262.3k $16.7m | Reduced -2.3k |
| Wallington Asset Management, LLC 3.01% of their portfolio | 260.6k $16.5m | Reduced -1.8k |
| TEACHER RETIREMENT SYSTEM OF TEXAS 0.11% of their portfolio | 258.6k $16.4m | Reduced -7.5k |
| LOOMIS SAYLES & CO L P 0.03% of their portfolio | 248.7k $15.8m | Added +65.3k |
| TUDOR INVESTMENT CORP ET AL 0.23% of their portfolio | 247.8k $15.7m | Reduced -48.3k |
| PRINCIPAL FINANCIAL GROUP INC 0.01% of their portfolio | 243.7k $15.5m | Added +9.8k |
| STATE BOARD OF ADMINISTRATION OF FLORIDA RETIREMENT SYSTEM 0.04% of their portfolio | 242.7k $15.4m | Added +220 |
| MARTINGALE ASSET MANAGEMENT L P 0.32% of their portfolio | 237.4k $15.1m | Reduced -52.3k |
| State of Tennessee, Department of Treasury 0.06% of their portfolio | 236.4k $15.0m | Reduced -91.9k |
| STANSBERRY ASSET MANAGEMENT, LLC 2.58% of their portfolio | 232.4k $14.8m | Added +9.3k |
| D. E. Shaw & Co., Inc. 0.02% of their portfolio | 231.8k $14.7m | Reduced -720.0k |
| FIL Ltd 0.02% of their portfolio | 230.6k $14.6m | Reduced -171.3k |
| PhiloSmith Capital Corp 4.79% of their portfolio | 219.9k $14.0m | Unchanged |
| BANK OF MONTREAL /CAN/ 0.00% of their portfolio | 212.5k $13.7m | Added +91.5k |
| NEW YORK STATE TEACHERS RETIREMENT SYSTEM 0.03% of their portfolio | 210.7k $13.4m | Reduced -20.8k |
| NATIXIS ADVISORS, LLC 0.04% of their portfolio | 209.1k $13.3m | Added +33.2k |
| KBC Group NV 0.05% of their portfolio | 204.4k $13.0m | Reduced -51.8k |
| BANK OF NOVA SCOTIA 0.03% of their portfolio | 204.2k $13.0m | Added +120.2k |
| AMERIPRISE FINANCIAL INC 0.00% of their portfolio | 202.3k $12.9m | Reduced -25.1k |