Vault-13

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

667 institutional holders
193,213,300193.2m shares reported held*
72.8% of all shares outstanding*
$12.5bnreported value*

* 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 ($53.4m this quarter). Holder counts are more reliable. Shares outstanding: 265.5m as of 2022-10-31, 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 ≈ $64.61. Options: 5 managers hold calls ($3.2m notional), 3 hold puts ($1.2m).

Biggest calls

SUSQUEHANNA INTERNATIONAL GROUP, LLP — $1.6m25.0k shares
JANE STREET GROUP, LLC — $639.0k9.9k shares
CITADEL ADVISORS LLC — $559.0k8.7k shares
SIMPLEX TRADING, LLC — $368.0k5.7k shares
CONCOURSE FINANCIAL GROUP SECURITIES, INC. — $00 shares

Biggest puts

SUSQUEHANNA INTERNATIONAL GROUP, LLP — $985.0k15.2k shares
CITADEL ADVISORS LLC — $232.0k3.6k shares
CONCOURSE FINANCIAL GROUP SECURITIES, INC. — $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.

HolderStakeChangeShares Last filed
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% 95.6m≈ $6.7bn 2026-07-21
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% +0.4 pts 95.6m≈ $6.7bn 2026-03-05
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% +0.1 pts 58.8m≈ $4.1bn 2026-06-04
VANGUARD CAPITAL MANAGEMENT LLC 13G · institution new · filed 2026-04-30 5.8% new 21.7m≈ $1.5bn 2026-04-30

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 2022

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)

BuyingSelling
202Q4 20: 0 buyingQ4 20: 0 sellingQ1 21: 0 buyingQ1 21: 0 sellingQ1 21Q2 21: 0 buyingQ2 21: 0 sellingQ3 21: 0 buyingQ3 21: 0 sellingQ3 21Q4 21: 1 buyingQ4 21: 1 sellingQ1 22: 0 buyingQ1 22: 0 sellingQ1 22Q2 22: 0 buyingQ2 22: 0 sellingQ3 22: 2 buyingQ3 22: 0 sellingQ3 22
Numbers
QuarterBuyingBoughtSellingSoldSold under a plan
Q4 20200—0——
Q1 20210—0——
Q2 20210—0——
Q3 20210—0——
Q4 20211$7061$2.0m—
Q1 20220—0——
Q2 20220—0——
Q3 20222$372.2k0——
DateInsiderTradeSharesPrice ValueTheir holding
2022-08-01 BROCKBANK MARK ELLWOOD Director · By Corporation Bought 1,434 $61.85 $88.7k1.4k shares +31%
2022-07-29 BROCKBANK MARK ELLWOOD Director · By Corporation Bought 4,566 $62.00 $283.1k4.6k shares new
2022-07-05 Talisman Jonathan Director · By DRP Bought 6 $67.60 $4066 shares +1%

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, Q3 2022

#ManagerLocationShares Value% of their portfolioChangeShares change
1 VANGUARD GROUP INC 0.05% of their portfolio Valley Forge, PA 25,127,86225.1m $1.6bn $1.6bn 0.05% —
2 JANUS HENDERSON GROUP PLC 0.45% of their portfolio LONDON, X0 18,588,47818.6m $1.2bn $1.2bn 0.45% —
3 BlackRock Inc. 0.03% of their portfolio New York, NY 13,819,87213.8m $892.5m $892.5m 0.03% —
4 STATE STREET CORP 0.05% of their portfolio BOSTON, MA 11,022,30911.0m $712.9m $712.9m 0.05% —
5 ATLANTA CAPITAL MANAGEMENT CO L L C 2.59% of their portfolio ATLANTA, GA 9,025,1659.0m $582.8m $582.8m 2.59% —
6 KAYNE ANDERSON RUDNICK INVESTMENT MANAGEMENT LLC 1.91% of their portfolio LOS ANGELES, CA 8,931,6758.9m $576.8m $576.8m 1.91% —
7 Invesco Ltd. 0.11% of their portfolio ATLANTA, GA 5,308,4395.3m $342.8m $342.8m 0.11% —
8 VICTORY CAPITAL MANAGEMENT INC 0.40% of their portfolio San Antonio, TX 5,263,2625.3m $339.9m $339.9m 0.40% —
9 GEODE CAPITAL MANAGEMENT, LLC 0.04% of their portfolio BOSTON, MA 4,455,8424.5m $287.8m $287.8m 0.04% —
10 First Eagle Investment Management, LLC 0.76% of their portfolio NEW YORK, NY 3,883,9683.9m $250.8m $250.8m 0.76% —
11 JPMORGAN CHASE & CO 0.03% of their portfolio NEW YORK, NY 2,961,4773.0m $191.3m $191.3m 0.03% —
12 FIRST TRUST ADVISORS LP 0.24% of their portfolio Wheaton, IL 2,847,3962.8m $183.9m $183.9m 0.24% —
13 NORGES BANK 0.04% of their portfolio OSLO, Q8 2,582,3172.6m $166.8m $166.8m 0.04% —
14 CITIGROUP INC 0.21% of their portfolio NEW YORK, NY 2,343,2452.3m $151.3m $151.3m 0.21% —
15 Capital World Investors 0.03% of their portfolio LOS ANGELES, CA 2,214,1762.2m $143.0m $143.0m 0.03% —
16 MORGAN STANLEY 0.02% of their portfolio NEW YORK, NY 2,067,5402.1m $133.5m $133.5m 0.02% —
17 Bank of New York Mellon Corp 0.03% of their portfolio NEW YORK, NY 2,055,1622.1m $132.7m $132.7m 0.03% —
18 BloombergSen Inc. 11.91% of their portfolio TORONTO, A6 2,020,7222.0m $130.5m $130.5m 11.91% —
19 WELLS FARGO & COMPANY/MN 0.04% of their portfolio SAN FRANCISCO, CA 1,994,1972.0m $128.8m $128.8m 0.04% —
20 NORTHERN TRUST CORP 0.03% of their portfolio CHICAGO, IL 1,989,2172.0m $128.5m $128.5m 0.03% —
21 APG Asset Management N.V. 0.33% of their portfolio Amsterdam, P7 1,969,0832.0m $129.8m $129.8m 0.33% —
22 Polar Capital Holdings Plc 0.78% of their portfolio London, X0 1,887,5001.9m $121.9m $121.9m 0.78% —
23 WELLINGTON MANAGEMENT GROUP LLP 0.02% of their portfolio Boston, MA 1,759,5621.8m $113.6m $113.6m 0.02% —
24 DIMENSIONAL FUND ADVISORS LP 0.04% of their portfolio AUSTIN, TX 1,742,4231.7m $112.5m $112.5m 0.04% —
25 Legal & General Group Plc 0.04% of their portfolio London, X0 1,650,0841.7m $106.6m $106.6m 0.04% —
26 1832 Asset Management L.P. 0.22% of their portfolio TORONTO, A6 1,633,6161.6m $105.5m $105.5m 0.22% —
27 BANK OF AMERICA CORP /DE/ 0.01% of their portfolio CHARLOTTE, NC 1,632,4301.6m $105.4m $105.4m 0.01% —
28 CHARLES SCHWAB INVESTMENT MANAGEMENT INC 0.04% of their portfolio SAN FRANCISCO, CA 1,571,7331.6m $101.5m $101.5m 0.04% —
29 GOLDMAN SACHS GROUP INC 0.02% of their portfolio NEW YORK, NY 1,241,2381.2m $80.2m $80.2m 0.02% —
30 FMR LLC 0.01% of their portfolio BOSTON, MA 1,078,6041.1m $69.7m $69.7m 0.01% —
31 CONFLUENCE INVESTMENT MANAGEMENT LLC 1.11% of their portfolio ST. LOUIS, MO 1,031,6291.0m $66.6m $66.6m 1.11% —
32 CITADEL ADVISORS LLC 0.08% of their portfolio MIAMI, FL 967,936967.9k $62.5m $62.5m 0.08% —
33 Nuveen Asset Management, LLC 0.02% of their portfolio CHICAGO, IL 941,848941.8k $60.8m $60.8m 0.02% —
34 BOSTON FINANCIAL MANGEMENT LLC 2.58% of their portfolio BOSTON, MA 921,394921.4k $59.5m $59.5m 2.58% —
35 Swiss National Bank 0.04% of their portfolio ZURICH, V8 919,392919.4k $59.4m $59.4m 0.04% —
36 UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC 0.03% of their portfolio NEW YORK, NY 884,738884.7k $57.1m $57.1m 0.03% —
37 Junto Capital Management LP 1.54% of their portfolio NEW YORK, NY 859,782859.8k $55.5m $55.5m 1.54% —
38 SAMLYN CAPITAL, LLC 1.02% of their portfolio New York, NY 826,128826.1k $53.4m $53.4m 1.02% —
39 RENAISSANCE TECHNOLOGIES LLC 0.07% of their portfolio NEW YORK, NY 780,548780.5k $50.4m $50.4m 0.07% —
40 CREDIT SUISSE AG/ 0.06% of their portfolio ZURICH, V8 768,105768.1k $49.6m $49.6m 0.06% —
41 ROYAL BANK OF CANADA 0.02% of their portfolio TORONTO, A6 745,914745.9k $48.2m $48.2m 0.02% —
42 Madison Asset Management, LLC 0.81% of their portfolio MADISON, WI 740,243740.2k $47.8m $47.8m 0.81% —
43 RAYMOND JAMES & ASSOCIATES 0.05% of their portfolio ST PETERSBURG, FL 733,749733.7k $47.4m $47.4m 0.05% —
44 ENVESTNET ASSET MANAGEMENT INC 0.03% of their portfolio Berwyn, PA 692,983693.0k $44.8m $44.8m 0.03% —
45 EULAV Asset Management 1.87% of their portfolio SARASOTA, FL 653,544653.5k $42.2m $42.2m 1.87% —
46 FIL Ltd 0.05% of their portfolio HAMILTON, D0 627,386627.4k $40.5m $40.5m 0.05% —
47 Sumitomo Mitsui Trust Group, Inc. 0.03% of their portfolio CHIYODA-KU, TOKYO, M0 623,159623.2k $40.2m $40.2m 0.03% —
48 STIFEL FINANCIAL CORP 0.06% of their portfolio ST. LOUIS, MO 607,691607.7k $39.2m $39.2m 0.06% —
49 AXA S.A. 0.08% of their portfolio PARIS, I0 599,870599.9k $38.7m $38.7m 0.08% —
50 Robeco Institutional Asset Management B.V. 0.12% of their portfolio ROTTERDAM, P7 563,885563.9k $36.4m $36.4m 0.12% —
51 Russell Investments Group, Ltd. 0.08% of their portfolio Seattle, WA 544,997545.0k $35.2m $35.2m 0.08% —
52 CANTOR FITZGERALD, L. P. 0.76% of their portfolio NEW YORK, NY 542,335542.3k $35.0m $35.0m 0.76% —
53 FEDERATED HERMES, INC. 0.10% of their portfolio PITTSBURGH, PA 521,392521.4k $33.7m $33.7m 0.10% —
54 Man Group plc 0.15% of their portfolio LONDON, X0 507,816507.8k $32.8m $32.8m 0.15% —
55 VOLORIDGE INVESTMENT MANAGEMENT, LLC 0.18% of their portfolio JUPITER, FL 503,963504.0k $32.5m $32.5m 0.18% —
56 JACOBS LEVY EQUITY MANAGEMENT, INC 0.25% of their portfolio FLORHAM PARK, NJ 489,828489.8k $31.6m $31.6m 0.25% —
57 DEUTSCHE BANK AG\ 0.02% of their portfolio FRANKFURT AM MAIN, 2M 481,636481.6k $31.1m $31.1m 0.02% —
58 LOS ANGELES CAPITAL MANAGEMENT LLC 0.16% of their portfolio LOS ANGELES, CA 476,502476.5k $30.8m $30.8m 0.16% —
59 California Public Employees Retirement System 0.03% of their portfolio Sacramento, CA 476,415476.4k $30.8m $30.8m 0.03% —
60 Dundas Partners LLP 3.32% of their portfolio EDINBURGH, X0 441,613441.6k $28.5m $28.5m 3.32% —
61 EATON VANCE MANAGEMENT 0.04% of their portfolio BOSTON, MA 440,515440.5k $28.4m $28.4m 0.04% —
62 RHUMBLINE ADVISERS 0.04% of their portfolio BOSTON, MA 421,219421.2k $27.2m $27.2m 0.04% —
63 Amundi 0.02% of their portfolio Paris, I0 411,897411.9k $28.0m $28.0m 0.02% —
64 NEW YORK STATE COMMON RETIREMENT FUND 0.04% of their portfolio ALBANY, NY 410,898410.9k $26.5m $26.5m 0.04% —
65 CRAMER ROSENTHAL MCGLYNN LLC 1.23% of their portfolio STAMFORD, CT 397,998398.0k $25.7m $25.7m 1.23% —
66 BNP PARIBAS ASSET MANAGEMENT Holding S.A. 0.10% of their portfolio Paris, I0 397,270397.3k $25.7m $25.7m 0.10% —
67 UBS Group AG 0.01% of their portfolio ZURICH, V8 383,037383.0k $24.7m $24.7m 0.01% —
68 State of Tennessee, Department of Treasury 0.12% of their portfolio NASHVILLE, TN 374,912374.9k $24.2m $24.2m 0.12% —
69 SG Americas Securities, LLC 0.37% of their portfolio NEW YORK, NY 372,838372.8k $24.1m $24.1m 0.37% —
70 SEGALL BRYANT & HAMILL, LLC 0.28% of their portfolio CHICAGO, IL 369,080369.1k $23.8m $23.8m 0.28% —
71 Mraz, Amerine & Associates, Inc. 6.39% of their portfolio Modesto, CA 368,653368.7k $23.8m $23.8m 6.39% —
72 National Pension Service 0.05% of their portfolio JEONJU-SI, JEOLLABUK-DO, M5 351,355351.4k $22.9m $22.9m 0.05% —
73 AQR CAPITAL MANAGEMENT LLC 0.05% of their portfolio Greenwich, CT 348,410348.4k $22.5m $22.5m 0.05% —
74 CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM 0.04% of their portfolio WEST SACRAMENTO, CA 348,256348.3k $22.5m $22.5m 0.04% —
75 HSBC HOLDINGS PLC 0.04% of their portfolio LONDON, X0 335,544335.5k $21.8m $21.8m 0.04% —
76 America First Investment Advisors, LLC 7.28% of their portfolio OMAHA, NE 323,623323.6k $20.9m $20.9m 7.28% —
77 AMERIPRISE FINANCIAL INC 0.01% of their portfolio MINNEAPOLIS, MN 318,819318.8k $20.5m $20.5m 0.01% —
78 CHILTON INVESTMENT CO INC. 0.61% of their portfolio STAMFORD, CT 303,181303.2k $19.6m $19.6m 0.61% —
79 Assenagon Asset Management S.A. 0.08% of their portfolio SENNINGERBERG, N4 300,380300.4k $19.4m $19.4m 0.08% —
80 ANCHOR CAPITAL ADVISORS LLC 0.52% of their portfolio Boston, MA 293,633293.6k $19.0m $19.0m 0.52% —
81 TEACHER RETIREMENT SYSTEM OF TEXAS 0.14% of their portfolio AUSTIN, TX 289,222289.2k $18.7m $18.7m 0.14% —
82 FRONTIER CAPITAL MANAGEMENT CO LLC 0.21% of their portfolio Boston, MA 275,166275.2k $17.8m $17.8m 0.21% —
83 WORLDQUANT MILLENNIUM ADVISORS LLC 0.43% of their portfolio NEW YORK, NY 273,698273.7k $17.7m $17.7m 0.43% —
84 HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND 0.09% of their portfolio TORONTO, A6 271,417271.4k $17.5m $17.5m 0.09% —
85 CANADA PENSION PLAN INVESTMENT BOARD 0.03% of their portfolio TORONTO ONTARIO, A6 268,717268.7k $17.4m $17.4m 0.03% —
86 Allianz Asset Management GmbH 0.04% of their portfolio MUNICH, 2M 267,751267.8k $17.3m $17.3m 0.04% —
87 PRICE T ROWE ASSOCIATES INC /MD/ 0.00% of their portfolio BALTIMORE, MD 263,437263.4k $17.0m $17.0m 0.00% —
88 Wallington Asset Management, LLC 3.97% of their portfolio Indianapolis, IN 259,690259.7k $16.8m $16.8m 3.97% —
89 ALLIANCEBERNSTEIN L.P. 0.01% of their portfolio NASHVILLE, TN 258,908258.9k $16.7m $16.7m 0.01% —
90 KBC Group NV 0.09% of their portfolio Brussels, C9 256,180256.2k $16.5m $16.5m 0.09% —
91 PRINCIPAL FINANCIAL GROUP INC 0.01% of their portfolio DES MOINES, IA 254,576254.6k $16.4m $16.4m 0.01% —
92 STATE BOARD OF ADMINISTRATION OF FLORIDA RETIREMENT SYSTEM 0.04% of their portfolio TALLAHASSEE, FL 254,018254.0k $16.4m $16.4m 0.04% —
93 NEW YORK STATE TEACHERS RETIREMENT SYSTEM 0.04% of their portfolio ALBANY, NY 244,064244.1k $15.8m $15.8m 0.04% —
94 Brookfield Corp /ON/ 0.06% of their portfolio TORONTO, A6 243,863243.9k $15.7m $15.7m 0.06% —
95 PhiloSmith Capital Corp 6.22% of their portfolio STAMFORD, CT 234,921234.9k $15.2m $15.2m 6.22% —
96 BANK OF MONTREAL /CAN/ 0.01% of their portfolio TORONTO, A6 233,253233.3k $15.3m $15.3m 0.01% —
97 PINEBRIDGE INVESTMENTS, L.P. 0.19% of their portfolio NEW YORK, NY 227,326227.3k $14.7m $14.7m 0.19% —
98 VOYA INVESTMENT MANAGEMENT LLC 0.02% of their portfolio ATLANTA, GA 220,929220.9k $14.3m $14.3m 0.02% —
99 NATIXIS ADVISORS, LLC 0.06% of their portfolio Boston, MA 216,066216.1k $14.0m $14.0m 0.06% —
100 Polaris Wealth Advisory Group, LLC 1.19% of their portfolio SAN RAFAEL, CA 211,533211.5k $14.3m $14.3m 1.19% —