Who owns BERKLEY W R CORP?
Prices and market caps: Cboe delayed data, at least 15 minutes delayed. Not real-time. Fundamentals from company filings.
Institutional ownership of WRB from SEC Form 13F filings across 948 reporting managers. All positions are from one synchronized reporting period — 2026-06-30 books, filed up to 45 days after quarter end — so every row is comparable.
As of the 2026-06-30 reporting period, 948 institutions disclosed 278.8M shares of BERKLEY W R CORP worth $19.68B — about 71.6% of shares outstanding; the largest disclosed holder is Mitsui Sumitomo Insurance Co Ltd. Source: SEC Form 13F filings, parsed by EvidInvest.
948
13F holders
$19.68B
value, 2026 filers
71.6%
of shares outstanding (278.8M sh)
130
new positions (2026 filers)
Top institutional holders
ordered by shares owned · positions as of 2026-06-30 · % of fund = share of the manager's own book · % of co. = share of WRB's shares outstanding
| # | Manager | Shares | Value | % of fund | % of co. | Δ shares QoQ |
|---|---|---|---|---|---|---|
| 1 | Mitsui Sumitomo Insurance Co Ltd | 58.8M | $4.15B | 100.0% | 15.1% | 0.0% |
| 2 | BlackRock, Inc. | 21.9M | $1.55B | 0.0% | 5.6% | -5.8% |
| 3 | VANGUARD CAPITAL MANAGEMENT LLC | 18.7M | $1.32B | 0.0% | 4.8% | -1.2% |
| 4 | VANGUARD PORTFOLIO MANAGEMENT LLC | 14.6M | $1.03B | 0.0% | 3.7% | -1.4% |
| 5 | STATE STREET CORP | 14.1M | $1.00B | 0.0% | 3.6% | -1.9% |
| 6 | GEODE CAPITAL MANAGEMENT, LLC | 8.3M | $588.5M | 0.0% | 2.1% | +0.5% |
| 7 | MORGAN STANLEY | 8.3M | $582.1M | 0.0% | 2.1% | -20.7% |
| 8 | KAYNE ANDERSON RUDNICK INVESTMENT MANAGEMENT LLC | 6.4M | $449.8M | 1.4% | 1.6% | -18.0% |
| 9 | Invesco Ltd. | 5.0M | $354.6M | 0.0% | 1.3% | -0.5% |
| 10 | GOLDMAN SACHS GROUP INC | 4.2M | $293.3M | 0.0% | 1.1% | +45.8% |
| 11 | DIMENSIONAL FUND ADVISORS LP | 4.0M | $285.1M | 0.1% | 1% | +7.3% |
| 12 | WELLS FARGO & COMPANY/MN | 3.7M | $262.4M | 0.0% | 1% | -1.8% |
| 13 | AQR CAPITAL MANAGEMENT LLC | 3.7M | $259.6M | 0.1% | 0.9% | +99.1% |
| 14 | FIRST TRUST ADVISORS LP | 3.6M | $255.7M | 0.2% | 0.9% | -8.8% |
| 15 | NORGES BANKNEW | 3.1M | $222.1M | 0.0% | 0.8% | new |
| 16 | BANK OF AMERICA CORP /DE/ | 2.8M | $201.0M | 0.0% | 0.7% | -1.9% |
| 17 | UBS Group AG | 2.8M | $200.0M | 0.0% | 0.7% | -13.2% |
| 18 | ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | 2.6M | $182.6M | 0.1% | 0.7% | +222.3% |
| 19 | NORTHERN TRUST CORP | 2.6M | $180.0M | 0.0% | 0.7% | -5.6% |
| 20 | 1832 Asset Management L.P. | 2.3M | $161.8M | 0.1% | 0.6% | 0.0% |
| 21 | JPMORGAN CHASE & CO | 2.2M | $153.0M | 0.0% | 0.6% | -34.2% |
| 22 | Polar Capital Holdings Plc | 2.1M | $150.2M | 0.4% | 0.5% | -6.4% |
| 23 | ROYAL LONDON ASSET MANAGEMENT LTD | 2.1M | $149.2M | 0.3% | 0.5% | -7.4% |
| 24 | UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | 2.0M | $144.0M | 0.0% | 0.5% | -6.2% |
| 25 | TWO SIGMA INVESTMENTS, LP | 2.0M | $142.0M | 0.1% | 0.5% | +637.5% |
Source: SEC Form 13F-HR filings (institutional managers over $100M in US-listed positions). 13Fs disclose long positions only, up to 45 days after quarter end; each manager's latest filed quarter is shown per row and dollar values are the manager's filed marks. Aggregates labeled "2026 filers" count only managers whose latest book is a 2026 quarter. Related: valuation · options positioning · supply chain. Research, not investment advice.