W. R. Berkley
WRB · NYSE
$73.15−$0.93 (−1.26%)TodayMarket closed ·
Prev close $74.08
Who owns WRB
Largest institutional holders, from their latest 13F filings
The 10 largest institutions hold 63.7% of WRB’s shares.
- Berkley (William R)24.5%
- Mitsui Sumitomo Insurance Co Ltd15.8%
- Vanguard Capital Management, LLC5.0%
- BlackRock Institutional Trust Company, N.A.4.0%
- Next 6 largest institutions14.2%
- All other shareholders36.3%
| Holder | Shares | % of shares |
|---|---|---|
| Berkley (William R) | 91.00M | 24.52% |
| Mitsui Sumitomo Insurance Co Ltd | 58.78M | 15.84% |
| Vanguard Capital Management, LLC | 18.69M | 5.04% |
| BlackRock Institutional Trust Company, N.A. | 15.03M | 4.05% |
| Vanguard Portfolio Management, LLC | 14.55M | 3.92% |
| State Street Investment Management (US) | 14.13M | 3.81% |
| Geode Capital Management, L.L.C. | 8.27M | 2.23% |
| Kayne Anderson Rudnick Investment Management, LLC | 6.38M | 1.72% |
| Atlanta Capital Management Company, L.L.C. | 4.91M | 1.32% |
| Berkley (William Robert Jr) | 4.56M | 1.23% |
Largest mutual fund holders
| Holder | Shares | % of shares |
|---|---|---|
| Vanguard Total Stock Market Index Fund | 8.89M | 2.40% |
| Vanguard 500 Index Fund | 7.72M | 2.08% |
| Vanguard Mid-Cap Index Fund | 6.04M | 1.63% |
| iShares Core S&P 500 ETF | 3.92M | 1.06% |
| Fidelity 500 Index Fund | 3.80M | 1.02% |
Insider trades
Form 4 filings by officers, directors and large holders
Insiders made no open-market buys or sales of WRB in the last 6 months.
| Insider | Type | Shares | Value |
|---|---|---|---|
| Welt Philip S | Tax withholding | 592 | $42.79K |
| Welt Philip S | Award | 14.09K | — |
| Baio Richard Mark | Tax withholding | 650 | $46.99K |
| Baio Richard Mark | Award | 14.09K | — |
| BERKLEY WILLIAM R JR | Tax withholding | 4.14K | $299.20K |
| BERKLEY WILLIAM R JR | Award | 98.59K | — |
| SHIEL JAMES G | Tax withholding | 650 | $46.99K |
| SHIEL JAMES G | Award | 14.09K | — |
| BERKLEY WILLIAM R | Award | 3.09K | — |
| Ferre Maria Luisa | Award | 3.09K | — |
Short interest
Settled Sep 30, 2026
- Shares short
- 13.10M
- Days to cover
- 2.83
- % of shares outstanding
- 3.53%
- Average daily volume
- 4.64M
- Change since last report
- −15.2%
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