Who owns WRB?
Institutional ownership of W.R. Berkley Corporation from Form 13F, Q2 2026
949 institutional managers reported holding W.R. Berkley Corporation (WRB) in Form 13F filings for Q2 2026, with 278,917,693 shares worth $19.7B. The largest reported holder was Mitsui Sumitomo Insurance Co Ltd. Managers that filed both quarters added a net 2,651,237 shares (+1.0%). 112 opened new positions and 84 sold out.
- Funds holding
- 949
- Value held
- $19.7B
- New / sold out
- 112 / 84
- Net shares, same filers
- +1.0%
Holdings as of June 30, 2026, the end of Q2 2026. Managers have 45 days after a quarter ends to file Form 13F (by August 14, 2026 for Q2 2026), so positions may have changed since.
Largest holders of WRB
| Fund | Value | Share of 13F holdings | Shares | Move |
|---|---|---|---|---|
| Mitsui Sumitomo Insurance Co Ltd | $4.1B | 21.1% | 58,780,450 | Unchanged |
| BlackRock, Inc. | $1.5B | 7.9% | 21,934,626 | Trimmed |
| Vanguard Capital Management LLC | $1.3B | 6.7% | 18,690,969 | Trimmed |
| Vanguard Portfolio Management LLC | $1.0B | 5.2% | 14,550,971 | Trimmed |
| State Street Corp | $1.0B | 5.1% | 14,126,628 | Trimmed |
| Geode Capital Management, LLC | $588M | 3.0% | 8,268,721 | Added |
| Morgan Stanley | $582M | 3.0% | 8,252,790 | Trimmed |
| Kayne Anderson Rudnick Investment Management LLC | $450M | 2.3% | 6,377,064 | Trimmed |
| Invesco Ltd. | $355M | 1.8% | 5,028,284 | Trimmed |
| Goldman Sachs Group Inc | $293M | 1.5% | 4,158,216 | Added |
| Dimensional Fund Advisors LP | $285M | 1.4% | 4,041,846 | Added |
| Wells Fargo & Company | $262M | 1.3% | 3,720,958 | Trimmed |
| AQR Capital Management LLC | $260M | 1.3% | 3,680,160 | Added |
| First Trust Advisors LP | $256M | 1.3% | 3,624,858 | Trimmed |
| Norges Bank | $222M | 1.1% | 3,148,633 | New |
| Bank of America Corp | $201M | 1.0% | 2,849,413 | Trimmed |
| UBS Group AG | $200M | 1.0% | 2,835,322 | Trimmed |
| Arrowstreet Capital, Limited Partnership | $183M | 0.9% | 2,588,583 | Added |
| Northern Trust Corp | $180M | 0.9% | 2,552,698 | Trimmed |
| 1832 Asset Management L.P. | $162M | 0.8% | 2,293,864 | Unchanged |
| JPMorgan Chase & Co | $153M | 0.8% | 2,154,477 | Trimmed |
| Polar Capital Holdings Plc | $150M | 0.8% | 2,130,000 | Trimmed |
| Royal London Asset Management LTD | $149M | 0.8% | 2,115,249 | Trimmed |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | $144M | 0.7% | 2,041,622 | Trimmed |
| Two Sigma Investments, LP | $142M | 0.7% | 2,013,358 | Added |
Share of 13F holdings is each fund's shares as a share of the 278,917,693 WRB shares all 13F filers reported, not of shares outstanding.
Biggest buyers in Q2 2026
- Norges Bank New+$222M
- AQR Capital Management LLC Added+$129M
- Arrowstreet Capital, Limited Partnership Added+$126M
- Two Sigma Investments, LP Added+$123M
- Goldman Sachs Group Inc Added+$92.2M
- Bristol Gate Capital Partners Inc. New+$64.7M
- Squarepoint Ops LLC Added+$49.2M
- Healthcare of Ontario Pension Plan Trust Fund Added+$38.3M
- Millennium Management LLC Added+$33.6M
- Canada Pension Plan Investment Board New+$30.5M
Biggest sellers in Q2 2026
- Morgan Stanley Trimmed-$152M
- Kayne Anderson Rudnick Investment Management LLC Trimmed-$98.4M
- BlackRock, Inc. Trimmed-$94.9M
- JPMorgan Chase & Co Trimmed-$79.5M
- PFA Pension, Forsikringsaktieselskab Trimmed-$55.7M
- Bank of New York Mellon Corp Trimmed-$48.4M
- BloombergSen Inc. Trimmed-$40.1M
- Maren Capital LLC Sold out-$33.4M
- Principal Financial Group Inc Trimmed-$32.2M
- UBS Group AG Trimmed-$30.5M
The change in shares since the quarter before, adjusted for stock splits and priced at the Q2 2026 value per share. Funds bought $1.4B and sold $1.2B; 326 added and 319 trimmed.
Schedule 13D and 13G filings on WRB
Owners of more than 5% must file within days, so these can be newer than the 13F data.
- 2026-11-09BERKLEY W R CORP SCHEDULE 13G filed by W.R. Berkley CorporationSchedule 13G
Questions about WRB ownership
- Who owns WRB stock?
- 949 institutional investment managers reported WRB positions in their Form 13F filings for Q2 2026, holding 278,917,693 shares worth $19.7B in total. Mitsui Sumitomo Insurance Co Ltd reported the largest position.
- Are funds buying or selling WRB?
- In Q2 2026, 112 managers opened new WRB positions, 326 added, 319 trimmed and 84 sold out. Managers that filed in both quarters added a net 2,651,237 shares.
- How current is this WRB institutional ownership data?
- It covers holdings as of the end of Q2 2026. Managers have 45 days after the quarter ends to file Form 13F (by August 14, 2026 for Q2 2026), so positions may have changed since.
From the SEC's Form 13F data sets for Q2 2026: every 13F holdings report, matched to WRB by CUSIP. Options are left out. WRB news and filings · WRB insider trades · Top funds