WRB Institutional Ownership & Shareholders
WR BERKLEY CORP (WRB) is currently held by 949 institutional investors tracked by InsiderSet, with a combined reported market value of approximately $19.64B based on the latest available SEC Form 13F filings for the quarter ended June 30, 2026.
Mitsui Sumitomo Insurance Co Ltd is currently the largest disclosed institutional shareholder of WRB tracked by InsiderSet, reporting ownership valued at approximately $4.15B in its June 30, 2026 SEC Form 13F filing. Based on current market prices and the latest disclosed share count, the position is now estimated to be worth approximately $4.34B, representing an estimated gain of +4.72% since the filing period.
The top 10 institutional shareholders tracked on this page collectively account for approximately 58% of the total disclosed WRB value among the investors covered in this analysis. Major shareholders include Mitsui Sumitomo Insurance Co Ltd, Blackrock, Inc., Vanguard Capital Management Llc, and several other long-term asset managers with concentrated positions in WR BERKLEY CORP (WRB).
This page ranks the largest institutional WRB shareholders using publicly disclosed SEC Form 13F data, including reported values, estimated current holding values, portfolio allocation percentages, ownership concentration metrics, and historical holding changes across major hedge funds and investment firms.
Institutional Holders
949
Total Reported Value
$19.64B
Largest Holder
Mitsui Sumitomo Insurance Co Ltd
Largest Position
$4.15B
Insider Transactions (90d)
8
Latest Filing Quarter
Q2 2026
New Institutional Positions
43
Funds Exiting Positions
0
| Name | Investor/Manager | Portfolio % | Quantity | Reported Balance | Current Estimated Value | Gain/loss Since Filing | Estimated Portfolio Performance |
|---|---|---|---|---|---|---|---|
| Mitsui Sumitomo Insurance Co Ltd | 100.00% | 58,780,450 | $4,145,785,139 | $4,341,524,037 | +$195,738,898 | +4.72% | |
| Blackrock, Inc. | 0.02% | 21,934,626 | $1,547,049,191 | $1,620,091,476 | +$73,042,285 | +4.72% | |
| Vanguard Capital Management Llc | 0.03% | 18,690,969 | $1,318,274,044 | $1,380,514,970 | +$62,240,926 | +4.72% | |
| Vanguard Portfolio Management Llc | 0.05% | 14,550,971 | $1,026,279,985 | $1,074,734,718 | +$48,454,733 | +4.72% | |
| State Street Corp | 0.03% | 14,126,628 | $1,004,668,877 | $1,043,392,744 | +$38,723,867 | +3.85% | |
| Geode Capital Management, Llc | 0.03% | 8,268,721 | $588,464,510 | $610,727,733 | +$22,263,223 | +3.78% | |
| Morgan Stanley | 0.03% | 8,252,790 | $582,069,551 | $609,551,069 | +$27,481,518 | +4.72% | |
| Kayne Anderson Rudnick Investment Management Llc | 1.40% | 6,377,064 | $449,774,394 | $471,009,947 | +$21,235,553 | +4.72% | |
| Invesco Ltd. | 0.03% | 5,028,284 | $354,644,870 | $371,389,056 | +$16,744,186 | +4.72% | |
| Goldman Sachs Group Inc | 0.03% | 4,158,216 | $293,279,011 | $307,125,834 | +$13,846,823 | +4.72% | |
| Dimensional Fund Advisors Lp | 0.05% | 4,041,846 | $285,090,089 | $298,530,746 | +$13,440,657 | +4.71% | |
| Wells Fargo & Company/Mn | 0.05% | 3,720,958 | $262,439,161 | $274,829,958 | +$12,390,797 | +4.72% | |
| Aqr Capital Management Llc | 0.09% | 3,680,160 | $259,561,706 | $271,816,618 | +$12,254,912 | +4.72% | |
| First Trust Advisors Lp | 0.15% | 3,624,858 | $255,661,220 | $267,732,012 | +$12,070,792 | +4.72% | |
| Norges Bank | 0.02% | 3,148,633 | $222,073,085 | $232,558,033 | +$10,484,948 | +4.72% | |
| Bank Of America Corp | 0.01% | 2,849,413 | $200,969,092 | $210,457,644 | +$9,488,552 | +4.72% | |
| Ubs Group Ag | 0.03% | 2,835,322 | $199,975,261 | $209,416,883 | +$9,441,622 | +4.72% | |
| Arrowstreet Capital, Limited Partnership | 0.08% | 2,588,583 | $182,572,759 | $191,192,740 | +$8,619,981 | +4.72% | |
| Northern Trust Corp | 0.02% | 2,552,698 | $180,041,789 | $188,542,274 | +$8,500,485 | +4.72% | |
| Janus Henderson Group Plc | 0.08% | 2,457,890 | $162,909,996 | $181,539,755 | +$18,629,759 | +11.44% | |
| 1832 Asset Management L.P. | 0.20% | 2,293,864 | $161,786,228 | $169,424,795 | +$7,638,567 | +4.72% | |
| Jpmorgan Chase & Co | 0.01% | 2,154,477 | $152,989,434 | $159,129,671 | +$6,140,237 | +4.01% | |
| Polar Capital Holdings Plc | 0.43% | 2,130,000 | $150,228,900 | $157,321,800 | +$7,092,900 | +4.72% | |
| Royal London Asset Management Ltd | 0.27% | 2,115,249 | $149,188,512 | $156,232,291 | +$7,043,779 | +4.72% | |
| Ubs Am, A Distinct Business Unit Of Ubs Asset Management Americas Llc | 0.03% | 2,175,492 | $144,191,609 | $160,681,839 | +$16,490,230 | +11.44% | |
| Two Sigma Investments, Lp | 0.11% | 2,013,358 | $142,002,140 | $148,706,622 | +$6,704,482 | +4.72% | |
| Charles Schwab Investment Management Inc | 0.02% | 1,917,449 | $135,237,679 | $141,622,783 | +$6,385,104 | +4.72% | |
| Vanguard Fiduciary Trust Co | 0.03% | 1,632,946 | $115,171,681 | $120,609,392 | +$5,437,711 | +4.72% | |
| Legal & General Group Plc | 0.02% | 1,599,505 | $112,813,089 | $118,139,439 | +$5,326,350 | +4.72% | |
| Madison Asset Management, Llc | 1.26% | 1,497,784 | $105,638,722 | $110,626,326 | +$4,987,604 | +4.72% | |
| Citadel Advisors Llc | 0.06% | 1,475,954 | $104,099,035 | $109,013,962 | +$4,914,927 | +4.72% | |
| Natixis Advisors, Llc | 0.12% | 1,466,496 | $103,432,000 | $108,315,395 | +$4,883,395 | +4.72% | |
| Fmr Llc | 0.00% | 1,446,808 | $102,043,390 | $106,861,239 | +$4,817,849 | +4.72% | |
| Barclays Plc | 0.03% | 1,440,408 | $101,591,977 | $106,388,535 | +$4,796,558 | +4.72% | |
| Bank Of New York Mellon Corp | 0.02% | 1,347,506 | $95,039,623 | $99,526,793 | +$4,487,170 | +4.72% | |
| Chilton Investment Co Inc. | 2.27% | 1,339,877 | $94,501,525 | $98,963,315 | +$4,461,790 | +4.72% | |
| Cornerstone Investment Partners, Llc | 3.15% | 1,336,146 | $94,238,377 | $98,687,744 | +$4,449,367 | +4.72% | |
| Deutsche Bank Ag\ | 0.03% | 1,305,627 | $92,085,873 | $96,433,610 | +$4,347,737 | +4.72% | |
| Jones Financial Companies Lllp | 0.04% | 1,259,360 | $89,753,885 | $93,016,330 | +$3,262,445 | +3.63% | |
| Royal Bank Of Canada | 0.02% | 1,257,518 | $88,691,000 | $92,880,279 | +$4,189,279 | +4.72% | |
| Hsbc Holdings Plc | 0.04% | 1,110,733 | $78,632,772 | $82,038,739 | +$3,405,967 | +4.33% | |
| Anchor Capital Advisors Llc | 2.05% | 1,035,350 | $73,023,238 | $76,470,951 | +$3,447,713 | +4.72% | |
| Raymond James Financial Inc | 0.02% | 993,028 | $70,038,261 | $73,345,048 | +$3,306,787 | +4.72% | |
| Bnp Paribas Financial Markets | 0.04% | 969,375 | $68,370,019 | $71,598,038 | +$3,228,019 | +4.72% | |
| Millennium Management Llc | 0.04% | 936,192 | $66,029,622 | $69,147,141 | +$3,117,519 | +4.72% | |
| Parnassus Endeavor Fund | Parnassus Investments | 0.19% | 961,856 | $64,963,754 | $71,042,684 | +$6,078,930 | +9.36% |
| Bristol Gate Capital Partners Inc. | 4.51% | 918,030 | $64,748,735 | $67,805,696 | +$3,056,961 | +4.72% | |
| Principal Financial Group Inc | 0.03% | 952,447 | $64,330,245 | $70,347,735 | +$6,017,490 | +9.35% | |
| Confluence Investment Management Llc | 1.07% | 946,290 | $63,912,411 | $69,892,979 | +$5,980,568 | +9.36% | |
| Jane Street Group, Llc | 0.04% | 875,704 | $61,763,403 | $64,679,497 | +$2,916,094 | +4.72% |
Frequently asked questions about WRB
Who are the largest institutional holders of WRB?
The largest institutional holders of WRB reported in the latest SEC Form 13F filings include Mitsui Sumitomo Insurance Co Ltd, Blackrock, Inc., Vanguard Capital Management Llc, Vanguard Portfolio Management Llc, and State Street Corp. InsiderSet ranks institutional holders by their latest reported WRB position.
What is WRB institutional ownership?
This page tracks WRB positions reported by institutional investment managers through SEC Form 13F. WR BERKLEY CORP (WRB) institutional ownership on InsiderSet reflects disclosed 13F holdings among the managers we analyze, not every shareholder of the stock.
How many institutions own WRB?
InsiderSet currently tracks 949 institutional managers reporting WRB holdings in the latest available 13F data. This count reflects institutions included in the SEC Form 13F filings analyzed by InsiderSet and should not be interpreted as the total number of WRB shareholders.
How much WRB stock do institutions own?
Institutional investment managers disclosed approximately $19.64B in WRB holdings for Q2 2026. This figure is reported 13F value as of the filing period, not necessarily today's market value.
When was WRB institutional ownership last updated?
The latest WRB institutional ownership data on InsiderSet is based on SEC Form 13F filings for the quarter ended June 30, 2026. Form 13F filings are generally reported after the quarter ends, so the holdings shown represent the latest publicly disclosed positions rather than real-time institutional holdings.
Are institutional WRB holdings real-time?
No. Form 13F data is not real-time. It represents positions reported by institutional investment managers as of the end of the reporting quarter. An institution may have changed its WRB position after the reporting date.
Are institutions buying or selling WRB?
Institutional buying and selling can be analyzed by comparing WRB positions across consecutive 13F reporting periods. InsiderSet's WRB Ownership Changes page shows institutions that increased, reduced, initiated, or exited positions based on reported 13F holdings. View WRB ownership changes.
How has WRB institutional ownership changed over time?
InsiderSet tracks WRB institutional holdings across multiple 13F reporting periods, allowing investors to compare institutional holder counts, reported value, and reported shares over time.