W. R. Berkley (WRB)
W. R. Berkley on one page: short interest, daily short volume, fails to deliver, large holders, 13F holders, financials, earnings dates and insider trades. Listed on NYSE, classified by the SEC as fire, marine & casualty insurance.
12.1M
Short interest
settlement 2026-10-15
5.6
Days to cover
+2.7 days vs prior
33.1%
Short share of volume
2026-11-03
8
Fails to deliver
settlement 2026-09-28
Mon 25 Jan
Next earnings
estimated date
$0
Insider flow, 90 days
0 buys, 0 sells
As of 2026-11-03.
Short interest
FINRA, twice a month. The newest 48 settlements in the table, 48 in the chart. JSONAs of 15 October 2026, short interest in WRB is 12,123,696 shares, down 3,332,717 shares over the last month. Over the last 48 readings it ranged from 3,802,229 shares (30 April 2025) to 25,869,453 shares (28 November 2025). At the reported average volume of 2.2M shares a day that is 5.6 days to cover.
Embed this chart.The embed keeps its attribution line.
<iframe src="https://xoomar.com/embed/stocks/wrb" width="100%" height="440" style="border:0;max-width:100%" loading="lazy" title="XOOMAR chart"></iframe>
| Settlement | Shares short | Change | Avg daily volume | Days to cover |
|---|---|---|---|---|
| 2026-10-15 | 12,123,696 | -7.5% | 2,181,215 | 5.56 |
| 2026-09-30 | 13,102,697 | -15.2% | 4,637,999 | 2.83 |
| 2026-09-15 | 15,456,413 | +1.8% | 2,722,588 | 5.68 |
| 2026-08-31 | 15,177,596 | +2.2% | 1,531,603 | 9.91 |
| 2026-08-14 | 14,856,832 | -4.8% | 1,703,791 | 8.72 |
| 2026-07-31 | 15,608,018 | -11.9% | 2,146,584 | 7.27 |
| 2026-07-15 | 17,721,972 | -0.7% | 1,837,657 | 9.64 |
| 2026-06-30 | 17,838,099 | -5.0% | 2,267,192 | 7.87 |
| 2026-06-15 | 18,772,707 | +1.5% | 2,123,451 | 8.84 |
| 2026-05-29 | 18,495,039 | -0.5% | 2,649,047 | 6.98 |
| 2026-05-15 | 18,590,945 | -2.3% | 1,673,159 | 11.11 |
| 2026-04-30 | 19,023,468 | +3.1% | 2,463,864 | 7.72 |
| 2026-04-15 | 18,445,428 | -8.7% | 1,654,216 | 11.15 |
| 2026-03-31 | 20,193,825 | +5.5% | 2,728,318 | 7.40 |
| 2026-03-13 | 19,133,915 | -5.3% | 1,763,996 | 10.85 |
| 2026-02-27 | 20,193,402 | +0.5% | 2,237,782 | 9.02 |
| 2026-02-13 | 20,103,374 | +5.1% | 2,079,759 | 9.67 |
| 2026-01-30 | 19,132,103 | +4.0% | 2,961,321 | 6.46 |
| 2026-01-15 | 18,401,650 | +5.1% | 2,285,353 | 8.05 |
| 2025-12-31 | 17,506,059 | -29.6% | 2,679,124 | 6.53 |
| 2025-12-15 | 24,860,492 | -3.9% | 5,018,426 | 4.95 |
| 2025-11-28 | 25,869,453 | +7.0% | 1,819,909 | 14.21 |
| 2025-11-14 | 24,168,675 | +14.8% | 2,683,523 | 9.01 |
| 2025-10-31 | 21,048,792 | +115.3% | 4,189,918 | 5.02 |
| 2025-10-15 | 9,775,731 | +10.0% | 1,944,801 | 5.03 |
| 2025-09-30 | 8,883,955 | -0.7% | 2,189,388 | 4.06 |
| 2025-09-15 | 8,944,103 | +2.1% | 1,487,188 | 6.01 |
| 2025-08-29 | 8,761,818 | +10.0% | 1,435,864 | 6.10 |
| 2025-08-15 | 7,963,440 | +22.2% | 1,984,298 | 4.01 |
| 2025-07-31 | 6,515,344 | +42.8% | 2,519,191 | 2.59 |
| 2025-07-15 | 4,563,971 | -0.7% | 2,248,541 | 2.03 |
| 2025-06-30 | 4,596,096 | +3.2% | 1,917,915 | 2.40 |
| 2025-06-13 | 4,453,599 | +14.8% | 1,283,986 | 3.47 |
| 2025-05-30 | 3,878,979 | -5.6% | 1,479,233 | 2.62 |
| 2025-05-15 | 4,107,572 | +8.0% | 1,437,281 | 2.86 |
| 2025-04-30 | 3,802,229 | -11.1% | 1,956,939 | 1.94 |
| 2025-04-15 | 4,275,814 | -28.4% | 2,530,201 | 1.69 |
| 2025-03-31 | 5,969,496 | -26.1% | 2,518,244 | 2.37 |
| 2025-03-14 | 8,079,875 | -6.4% | 1,440,601 | 5.61 |
| 2025-02-28 | 8,633,197 | +20.5% | 1,640,180 | 5.26 |
| 2025-02-14 | 7,165,169 | +5.9% | 1,479,037 | 4.84 |
| 2025-01-31 | 6,763,476 | +39.8% | 2,770,810 | 2.44 |
| 2025-01-15 | 4,839,685 | +1.0% | 1,635,514 | 2.96 |
| 2024-12-31 | 4,792,863 | +2.3% | 1,495,186 | 3.21 |
| 2024-12-13 | 4,687,181 | +18.8% | 1,240,507 | 3.78 |
| 2024-11-29 | 3,946,031 | -12.7% | 1,193,723 | 3.31 |
| 2024-11-15 | 4,521,097 | +0.7% | 1,370,427 | 3.30 |
| 2024-10-31 | 4,488,242 | -23.9% | 2,603,138 | 1.72 |
Daily short volume
FINRA Reg SHO, the last 30 sessions. JSONAs of 3 November 2026, the short share of WRB volume is 33.1%, down 13.8 points over the last five sessions. Over the last 30 readings it ranged from 28.3% (23 October 2026) to 61.0% (7 October 2026). The latest reading is 11.4 points below the 30-session average of 44.5%, on 558K shares reported.
| Date | Short volume | Total volume | Short share | Exempt |
|---|---|---|---|---|
| 2026-11-03 | 185K | 558K | 33.1% | 1,377 |
| 2026-11-02 | 211K | 506K | 41.8% | 0 |
| 2026-10-30 | 229K | 583K | 39.3% | 1,799 |
| 2026-10-29 | 210K | 500K | 42.0% | 775 |
| 2026-10-28 | 332K | 629K | 52.9% | 2,925 |
| 2026-10-27 | 391K | 834K | 46.9% | 0 |
| 2026-10-26 | 280K | 726K | 38.5% | 0 |
| 2026-10-23 | 272K | 960K | 28.3% | 103 |
| 2026-10-22 | 174K | 454K | 38.3% | 111 |
| 2026-10-21 | 249K | 737K | 33.8% | 1,087 |
| 2026-10-20 | 763K | 1.7M | 45.0% | 300 |
| 2026-10-19 | 535K | 1.0M | 53.3% | 377 |
| 2026-10-16 | 293K | 887K | 33.1% | 336 |
| 2026-10-15 | 277K | 614K | 45.1% | 104 |
| 2026-10-14 | 203K | 504K | 40.3% | 0 |
| 2026-10-13 | 326K | 641K | 50.8% | 869 |
| 2026-10-12 | 208K | 471K | 44.1% | 475 |
| 2026-10-09 | 313K | 647K | 48.4% | 444 |
| 2026-10-08 | 417K | 961K | 43.4% | 429 |
| 2026-10-07 | 481K | 788K | 61.0% | 343 |
| 2026-10-06 | 576K | 1.0M | 55.0% | 123 |
| 2026-10-05 | 301K | 747K | 40.3% | 139 |
| 2026-10-02 | 254K | 600K | 42.3% | 74 |
| 2026-10-01 | 374K | 718K | 52.1% | 5,620 |
| 2026-09-30 | 297K | 598K | 49.7% | 405 |
| 2026-09-29 | 262K | 567K | 46.1% | 1,196 |
| 2026-09-28 | 346K | 633K | 54.7% | 100 |
| 2026-09-25 | 359K | 758K | 47.3% | 548 |
| 2026-09-24 | 290K | 597K | 48.6% | 201 |
| 2026-09-23 | 226K | 592K | 38.1% | 204 |
Fails to deliver
SEC, the last 30 settlement dates with a fail. JSONAs of 28 September 2026, the fails-to-deliver balance in WRB is 8 shares, down 15,216 shares over the last settlement date. Over the last 30 readings it ranged from 1 share (30 July 2026) to 84,874 shares (19 August 2026). The latest reading sits at the bottom of that range.
| Settlement | Shares failed | Price | Value |
|---|---|---|---|
| 2026-09-28 | 8 | $66.82 | $535 |
| 2026-09-24 | 15,224 | $67.67 | $1.0M |
| 2026-09-22 | 165 | $68.79 | $11K |
| 2026-09-21 | 160 | $69.99 | $11K |
| 2026-09-18 | 207 | $70.10 | $15K |
| 2026-09-11 | 698 | $70.05 | $49K |
| 2026-09-10 | 73,292 | $69.91 | $5.1M |
| 2026-09-08 | 41,584 | $69.14 | $2.9M |
| 2026-09-02 | 3,288 | $67.72 | $223K |
| 2026-08-31 | 182 | $68.44 | $12K |
| 2026-08-19 | 84,874 | $70.17 | $6.0M |
| 2026-08-13 | 285 | $69.73 | $20K |
| 2026-08-12 | 138 | $70.09 | $10K |
| 2026-08-11 | 350 | $70.82 | $25K |
| 2026-08-06 | 32,345 | $72.08 | $2.3M |
| 2026-08-04 | 2,763 | $72.09 | $199K |
| 2026-07-30 | 1 | $75.65 | $76 |
| 2026-07-28 | 2,676 | $75.70 | $203K |
| 2026-07-27 | 81 | $75.46 | $6K |
| 2026-07-24 | 200 | $73.43 | $15K |
| 2026-07-23 | 7,333 | $72.36 | $531K |
| 2026-07-22 | 200 | $72.16 | $14K |
| 2026-07-01 | 23,078 | $70.53 | $1.6M |
| 2026-06-30 | 8,174 | $71.01 | $580K |
| 2026-06-29 | 29 | $71.27 | $2K |
| 2026-06-26 | 4,076 | $69.29 | $282K |
| 2026-06-25 | 659 | $70.05 | $46K |
| 2026-06-24 | 11,625 | $68.96 | $802K |
| 2026-06-18 | 44,060 | $68.09 | $3.0M |
| 2026-06-15 | 712 | $68.27 | $49K |
Insider trades
SEC Form 4, newest first. JSONNo open-market insider trades were reported for WRB in the last 90 days. The most recent filings are listed below. Latest filing: Welt Philip S (EVP & Secretary) on 2026-08-03.
| Date | Insider | Title | Type | Shares | Price | Value | Owned after |
|---|---|---|---|---|---|---|---|
| 2026-08-03 | Welt Philip S | EVP & Secretary | Tax withholding | 592 | $72.29 | $43K | 214K |
| 2026-08-03 | Welt Philip S | EVP & Secretary | Grant | 14K | $0.00 | $0 | 215K |
| 2026-08-03 | Baio Richard Mark | EVP & CFO | Tax withholding | 650 | $72.29 | $47K | 228K |
| 2026-08-03 | Baio Richard Mark | EVP & CFO | Grant | 14K | $0.00 | $0 | 228K |
| 2026-08-03 | BERKLEY WILLIAM R JR | Chairman, President and CEO | Tax withholding | 4K | $72.29 | $299K | 4.7M |
| 2026-08-03 | BERKLEY WILLIAM R JR | Chairman, President and CEO | Grant | 99K | $0.00 | $0 | 4.7M |
| 2026-08-03 | SHIEL JAMES G | EVP - Investments | Tax withholding | 650 | $72.29 | $47K | 811K |
| 2026-08-03 | SHIEL JAMES G | EVP - Investments | Grant | 14K | $0.00 | $0 | 811K |
| 2026-06-03 | BERKLEY WILLIAM R | Executive Chairman | Grant | 3K | $0.00 | $0 | 17.4M |
| 2026-06-03 | Ferre Maria Luisa | Director | Grant | 3K | $0.00 | $0 | 59K |
| 2026-06-03 | Mattson Marie Angela | Director | Grant | 3K | $0.00 | $0 | 10K |
| 2026-06-03 | BERKLEY WILLIAM R JR | President and CEO | Grant | 3K | $0.00 | $0 | 4.6M |
| 2026-06-03 | Mosley Daniel Lynn | Director | Grant | 3K | $0.00 | $0 | 15K |
| 2026-06-03 | Farrell Mary C | Director | Grant | 3K | $0.00 | $0 | 19K |
| 2026-06-03 | Rusbuldt Robert Alan | Director | Grant | 3K | $0.00 | $0 | 6K |
| 2026-06-03 | BLAYLOCK RONALD E | Director | Grant | 3K | $0.00 | $0 | 122K |
| 2026-06-03 | Talisman Jonathan | Director | Grant | 3K | $0.00 | $0 | 33K |
| 2026-06-03 | Augostini Christopher L | Director | Grant | 3K | $0.00 | $0 | 110K |
| 2026-03-03 | MITSUI SUMITOMO INSURANCE CO LTD | 10% owner | Buy | 73K | $72.52 | $5.3M | 58.8M |
| 2026-03-03 | MITSUI SUMITOMO INSURANCE CO LTD | 10% owner | Buy | 39K | $71.60 | $2.8M | 58.7M |
| 2026-03-02 | MITSUI SUMITOMO INSURANCE CO LTD | 10% owner | Buy | 101K | $73.20 | $7.4M | 58.7M |
| 2026-03-02 | MITSUI SUMITOMO INSURANCE CO LTD | 10% owner | Buy | 45K | $72.29 | $3.3M | 58.6M |
| 2026-02-27 | MITSUI SUMITOMO INSURANCE CO LTD | 10% owner | Buy | 147K | $71.63 | $10.5M | 58.5M |
| 2026-02-26 | MITSUI SUMITOMO INSURANCE CO LTD | 10% owner | Buy | 8K | $72.11 | $542K | 58.4M |
| 2026-02-26 | MITSUI SUMITOMO INSURANCE CO LTD | 10% owner | Buy | 145K | $71.65 | $10.4M | 58.4M |
| 2026-02-25 | MS&AD Insurance Group Holdings, Inc. | TenPercentOwner | Buy | 155K | $71.39 | $11.0M | 58.2M |
| 2026-02-25 | MS&AD Insurance Group Holdings, Inc. | TenPercentOwner | Buy | 14K | $71.77 | $1.0M | 58.2M |
| 2026-02-25 | MITSUI SUMITOMO INSURANCE CO LTD | 10% owner | Buy | 14K | $71.77 | $1.0M | 58.2M |
| 2026-02-25 | MITSUI SUMITOMO INSURANCE CO LTD | 10% owner | Buy | 155K | $71.39 | $11.0M | 58.2M |
| 2026-02-24 | MS&AD Insurance Group Holdings, Inc. | TenPercentOwner | Buy | 62K | $71.28 | $4.4M | 58.1M |
| 2026-02-24 | MS&AD Insurance Group Holdings, Inc. | TenPercentOwner | Buy | 103K | $70.52 | $7.3M | 58.0M |
| 2026-02-24 | MITSUI SUMITOMO INSURANCE CO LTD | 10% owner | Buy | 62K | $71.28 | $4.4M | 58.1M |
| 2026-02-24 | MITSUI SUMITOMO INSURANCE CO LTD | 10% owner | Buy | 103K | $70.52 | $7.3M | 58.0M |
| 2026-02-23 | MS&AD Insurance Group Holdings, Inc. | TenPercentOwner | Buy | 204K | $71.09 | $14.5M | 57.9M |
| 2026-02-23 | MS&AD Insurance Group Holdings, Inc. | TenPercentOwner | Buy | 16K | $71.80 | $1.2M | 57.9M |
| 2026-02-23 | MITSUI SUMITOMO INSURANCE CO LTD | 10% owner | Buy | 16K | $71.80 | $1.2M | 57.9M |
| 2026-02-23 | MITSUI SUMITOMO INSURANCE CO LTD | 10% owner | Buy | 204K | $71.09 | $14.5M | 57.9M |
| 2026-02-20 | MS&AD Insurance Group Holdings, Inc. | TenPercentOwner | Buy | 161K | $70.80 | $11.4M | 57.7M |
| 2026-02-20 | MITSUI SUMITOMO INSURANCE CO LTD | 10% owner | Buy | 161K | $70.80 | $11.4M | 57.7M |
| 2026-02-19 | MS&AD Insurance Group Holdings, Inc. | TenPercentOwner | Buy | 44K | $71.50 | $3.1M | 57.5M |
| 2026-02-19 | MS&AD Insurance Group Holdings, Inc. | TenPercentOwner | Buy | 301K | $70.53 | $21.2M | 57.5M |
| 2026-02-19 | MITSUI SUMITOMO INSURANCE CO LTD | 10% owner | Buy | 44K | $71.50 | $3.1M | 57.5M |
| 2026-02-19 | MITSUI SUMITOMO INSURANCE CO LTD | 10% owner | Buy | 301K | $70.53 | $21.2M | 57.5M |
| 2026-02-18 | MITSUI SUMITOMO INSURANCE CO LTD | 10% owner | Buy | 45K | $70.96 | $3.2M | 57.2M |
| 2026-02-18 | MITSUI SUMITOMO INSURANCE CO LTD | 10% owner | Buy | 240K | $70.58 | $16.9M | 57.1M |
| 2026-02-17 | MITSUI SUMITOMO INSURANCE CO LTD | 10% owner | Buy | 281K | $71.19 | $20.0M | 56.9M |
| 2026-02-13 | MS&AD Insurance Group Holdings, Inc. | TenPercentOwner | Buy | 15K | $69.73 | $1.1M | 56.6M |
| 2026-02-13 | MS&AD Insurance Group Holdings, Inc. | TenPercentOwner | Buy | 280 | $71.18 | $20K | 56.6M |
| 2026-02-13 | MS&AD Insurance Group Holdings, Inc. | TenPercentOwner | Buy | 4K | $70.30 | $303K | 56.6M |
| 2026-02-13 | MITSUI SUMITOMO INSURANCE CO LTD | 10% owner | Buy | 280 | $71.18 | $20K | 56.6M |
| 2026-02-13 | MITSUI SUMITOMO INSURANCE CO LTD | 10% owner | Buy | 4K | $70.30 | $303K | 56.6M |
| 2026-02-13 | MITSUI SUMITOMO INSURANCE CO LTD | 10% owner | Buy | 15K | $69.73 | $1.1M | 56.6M |
| 2026-02-12 | MS&AD Insurance Group Holdings, Inc. | TenPercentOwner | Buy | 18K | $71.88 | $1.3M | 56.6M |
| 2026-02-12 | MS&AD Insurance Group Holdings, Inc. | TenPercentOwner | Buy | 2K | $72.76 | $175K | 56.6M |
| 2026-02-12 | MITSUI SUMITOMO INSURANCE CO LTD | 10% owner | Buy | 2K | $72.76 | $175K | 56.6M |
| 2026-02-12 | MITSUI SUMITOMO INSURANCE CO LTD | 10% owner | Buy | 18K | $71.88 | $1.3M | 56.6M |
| 2026-02-11 | MS&AD Insurance Group Holdings, Inc. | TenPercentOwner | Buy | 4K | $70.50 | $252K | 56.5M |
| 2026-02-11 | MS&AD Insurance Group Holdings, Inc. | TenPercentOwner | Buy | 9K | $69.59 | $646K | 56.5M |
| 2026-02-11 | MS&AD Insurance Group Holdings, Inc. | TenPercentOwner | Buy | 11K | $71.45 | $798K | 56.6M |
| 2026-02-11 | MITSUI SUMITOMO INSURANCE CO LTD | 10% owner | Buy | 11K | $71.45 | $798K | 56.6M |
| 2026-02-11 | MITSUI SUMITOMO INSURANCE CO LTD | 10% owner | Buy | 4K | $70.50 | $252K | 56.5M |
| 2026-02-11 | MITSUI SUMITOMO INSURANCE CO LTD | 10% owner | Buy | 9K | $69.59 | $646K | 56.5M |
| 2026-02-10 | MS&AD Insurance Group Holdings, Inc. | TenPercentOwner | Buy | 22K | $69.09 | $1.5M | 56.5M |
| 2026-02-10 | MS&AD Insurance Group Holdings, Inc. | TenPercentOwner | Buy | 12K | $69.92 | $845K | 56.5M |
| 2026-02-10 | MITSUI SUMITOMO INSURANCE CO LTD | 10% owner | Buy | 12K | $69.92 | $845K | 56.5M |
| 2026-02-10 | MITSUI SUMITOMO INSURANCE CO LTD | 10% owner | Buy | 22K | $69.09 | $1.5M | 56.5M |
| 2026-02-09 | MS&AD Insurance Group Holdings, Inc. | TenPercentOwner | Buy | 36K | $69.27 | $2.5M | 56.5M |
| 2026-02-09 | MS&AD Insurance Group Holdings, Inc. | TenPercentOwner | Buy | 4K | $70.32 | $285K | 56.5M |
| 2026-02-09 | MITSUI SUMITOMO INSURANCE CO LTD | 10% owner | Buy | 4K | $70.32 | $285K | 56.5M |
| 2026-02-09 | MITSUI SUMITOMO INSURANCE CO LTD | 10% owner | Buy | 36K | $69.27 | $2.5M | 56.5M |
| 2026-02-06 | MS&AD Insurance Group Holdings, Inc. | TenPercentOwner | Buy | 4K | $71.39 | $307K | 56.5M |
| 2026-02-06 | MS&AD Insurance Group Holdings, Inc. | TenPercentOwner | Buy | 16K | $70.46 | $1.1M | 56.5M |
| 2026-02-06 | MITSUI SUMITOMO INSURANCE CO LTD | 10% owner | Buy | 4K | $71.39 | $307K | 56.5M |
| 2026-02-06 | MITSUI SUMITOMO INSURANCE CO LTD | 10% owner | Buy | 16K | $70.46 | $1.1M | 56.5M |
| 2026-02-05 | MS&AD Insurance Group Holdings, Inc. | TenPercentOwner | Buy | 13K | $71.25 | $960K | 56.4M |
| 2026-02-05 | MS&AD Insurance Group Holdings, Inc. | TenPercentOwner | Buy | 7K | $70.79 | $462K | 56.4M |
| 2026-02-05 | MITSUI SUMITOMO INSURANCE CO LTD | 10% owner | Buy | 13K | $71.25 | $960K | 56.4M |
| 2026-02-05 | MITSUI SUMITOMO INSURANCE CO LTD | 10% owner | Buy | 7K | $70.79 | $462K | 56.4M |
| 2026-02-04 | MITSUI SUMITOMO INSURANCE CO LTD | 10% owner | Buy | 22K | $70.25 | $1.6M | 56.4M |
| 2026-02-04 | MITSUI SUMITOMO INSURANCE CO LTD | 10% owner | Buy | 3K | $69.77 | $180K | 56.4M |
| 2026-02-03 | MITSUI SUMITOMO INSURANCE CO LTD | 10% owner | Buy | 32K | $68.87 | $2.2M | 56.4M |
| 2026-02-03 | MITSUI SUMITOMO INSURANCE CO LTD | 10% owner | Buy | 8K | $67.75 | $565K | 56.4M |
| 2026-02-02 | MITSUI SUMITOMO INSURANCE CO LTD | 10% owner | Buy | 13K | $68.42 | $900K | 56.4M |
| 2026-02-02 | MITSUI SUMITOMO INSURANCE CO LTD | 10% owner | Buy | 237K | $67.71 | $16.1M | 56.3M |
| 2026-01-30 | MITSUI SUMITOMO INSURANCE CO LTD | 10% owner | Buy | 195K | $68.36 | $13.3M | 56.1M |
| 2026-01-29 | MITSUI SUMITOMO INSURANCE CO LTD | 10% owner | Buy | 28K | $68.56 | $1.9M | 55.9M |
| 2026-01-29 | MITSUI SUMITOMO INSURANCE CO LTD | 10% owner | Buy | 262K | $68.08 | $17.9M | 55.9M |
| 2026-01-28 | MS&AD Insurance Group Holdings, Inc. | TenPercentOwner | Buy | 29K | $67.89 | $1.9M | 55.6M |
| 2026-01-28 | MS&AD Insurance Group Holdings, Inc. | TenPercentOwner | Buy | 280K | $67.58 | $18.9M | 55.6M |
| 2026-01-28 | MITSUI SUMITOMO INSURANCE CO LTD | 10% owner | Buy | 29K | $67.89 | $1.9M | 55.6M |
| 2026-01-28 | MITSUI SUMITOMO INSURANCE CO LTD | 10% owner | Buy | 280K | $67.58 | $18.9M | 55.6M |
| 2026-01-27 | MS&AD Insurance Group Holdings, Inc. | TenPercentOwner | Buy | 800 | $65.86 | $53K | 55.0M |
| 2026-01-27 | MS&AD Insurance Group Holdings, Inc. | TenPercentOwner | Buy | 3K | $69.04 | $184K | 55.3M |
| 2026-01-27 | MS&AD Insurance Group Holdings, Inc. | TenPercentOwner | Buy | 9K | $68.56 | $588K | 55.3M |
| 2026-01-27 | MS&AD Insurance Group Holdings, Inc. | TenPercentOwner | Buy | 326K | $67.40 | $22.0M | 55.3M |
| 2026-01-27 | MS&AD Insurance Group Holdings, Inc. | TenPercentOwner | Buy | 12K | $66.87 | $802K | 55.0M |
| 2026-01-27 | MITSUI SUMITOMO INSURANCE CO LTD | 10% owner | Buy | 3K | $69.04 | $184K | 55.3M |
| 2026-01-27 | MITSUI SUMITOMO INSURANCE CO LTD | 10% owner | Buy | 9K | $68.56 | $588K | 55.3M |
| 2026-01-27 | MITSUI SUMITOMO INSURANCE CO LTD | 10% owner | Buy | 326K | $67.40 | $22.0M | 55.3M |
| 2026-01-27 | MITSUI SUMITOMO INSURANCE CO LTD | 10% owner | Buy | 12K | $66.87 | $802K | 55.0M |
Form 4 filings are due within two business days of the trade. Insiders sell for many reasons that say nothing about the company; open-market buys are rarer.
Large holders (13D and 13G)
One row per reporting person with its latest filing, newest first. JSON11 holders report 5% or more of WRB in their latest filing, all on Schedule 13D (active intent). The largest reported stake is WR Berkley & Others LLC at 25.7% of the class (95,557,324 shares), filed 2026-07-21 for an event on 2026-07-17.
| Filed | Form | Holder | Shares | Of class | Event |
|---|---|---|---|---|---|
| 2026-10-30 | 13G/Ano. 1 | Vanguard Capital Managementinvestment adviser | 16.5M | 4.4% | 2026-09-30 |
| 2026-10-27 | 13G/Ano. 14 | BlackRock, Inc.parent holding company | 17.2M | 4.6% | 2026-09-30 |
| 2026-07-21 | 13D/Ano. 2 | WR Berkley & Others LLCparent holding company | 95.6M | 25.7% | 2026-07-17 |
| 2026-07-21 | 13D/Ano. 2 | WR Berkley & Others 2 LLCparent holding company | 95.6M | 25.7% | 2026-07-17 |
| 2026-07-21 | 13D/Ano. 2 | Estate of William R. Berkleyindividual | 95.6M | 25.7% | 2026-07-17 |
| 2026-07-21 | 13D/Ano. 2 | Marjorie J. Berkleyindividual | 95.6M | 25.7% | 2026-07-17 |
| 2026-07-21 | 13D/Ano. 2 | W. Robert Berkley, Jr.individual | 95.6M | 25.7% | 2026-07-17 |
| 2026-07-21 | 13D/Ano. 2 | The William R. Berkley 2011 GST Trust u/a dated December 20, 2011other entity | 95.6M | 25.7% | 2026-07-17 |
| 2026-07-21 | 13D/Ano. 2 | The William R. Berkley 2022 Family Trust f/b/o William R. Berkley, Jr. and His Issueother entity | 95.6M | 25.7% | 2026-07-17 |
| 2026-07-21 | 13D/Ano. 2 | The William R. Berkley 2022 Family Trust f/b/o Lauren Berkley and Her Issueother entity | 95.6M | 25.7% | 2026-07-17 |
| 2026-06-04 | 13D/Ano. 4 | Mitsui Sumitomo Insurance Co., Ltd.insurance company | 58.8M | 15.8% | 2026-06-03 |
| 2026-06-04 | 13D/Ano. 4 | MS&AD Insurance Group Holdings, Inc.parent holding company | 58.8M | 15.8% | 2026-06-03 |
| 2026-03-27 | 13G/Ano. 11 | The Vanguard Groupinvestment adviser | 0 | 0.0% | 2026-03-13 |
| 2026-03-05 | 13D/Ano. 1 | William R. Berkleyindividual | 95.6M | 25.5% | 2026-03-04 |
13F holders
Tracked managers holding WRB at their latest 13F. JSON6 of the 30 tracked managers held WRB at their latest 13F, $593.1M in total at quarter-end prices. AQR Capital Management is the largest at $259.6M (0.1% of its portfolio) as of 2026-06-30. Over the prior quarter 6 added shares and 0 cut.
| Fund | Quarter | Shares | Value | Of portfolio | Change in shares |
|---|---|---|---|---|---|
| AQR Capital Management | 2026-06-30 | 3.7M | $259.6M | 0.09% | +1.8M |
| Two Sigma Investments | 2026-06-30 | 2.0M | $142.0M | 0.10% | +1.7M |
| Citadel Advisors | 2026-06-30 | 1.5M | $104.1M | 0.01% | +82K |
| Millennium Management | 2026-06-30 | 936K | $66.0M | 0.02% | +477K |
| D. E. Shaw & Co. | 2026-06-30 | 290K | $20.5M | 0.01% | +90K |
| Bridgewater Associates | 2026-06-30 | 13K | $952K | 0.00% | new |
Only the 30 tracked managers on the funds hub; a 13F reports long positions in US listed stock at quarter end, 45 days late, and says nothing about shorts or positions sold since.
Financials
SEC XBRL, as filed. JSONIn Q2 FY 2026 (quarter ended 2026-06-30) W. R. Berkley reported revenue of $3.72B, up 1.2% from the same quarter a year earlier, and net income of $452.3M (1.15 diluted EPS). In FY 2025 it generated $3.58B of operating cash flow and spent $270.2M on buybacks and $700.3M on dividends.
- Cash
- $2.61B
- Equity
- $9.83B
- Total assets
- $45.68B
- Shares outstanding
- 371,227,529
Quarterly, last 8 quarters
| Quarter | Period end | Revenue | Net income | Margin | Diluted EPS |
|---|---|---|---|---|---|
| Q2 FY 2026 | 2026-06-30 | $3.72B | $452.3M | 12.2% | 1.15 |
| Q1 FY 2026 | 2026-03-31 | $3.69B | $515.2M | 14.0% | 1.31 |
| Q4 FY 2025derived | 2025-12-31 | $3.72B | $449.5M | 12.1% | n/a |
| Q3 FY 2025 | 2025-09-30 | $3.77B | $511.0M | 13.6% | 1.28 |
| Q2 FY 2025 | 2025-06-30 | $3.67B | $401.3M | 10.9% | 1.00 |
| Q1 FY 2025 | 2025-03-31 | $3.55B | $417.6M | 11.8% | 1.04 |
| Q4 FY 2024derived | 2024-12-31 | $3.67B | $576.1M | 15.7% | n/a |
| Q3 FY 2024 | 2024-09-30 | $3.40B | $365.6M | 10.8% | 0.91 |
Fiscal years, with buybacks and dividends
| Fiscal year | Ends | Revenue | Net income | Operating cash flow | Capex | Buybacks | Dividends |
|---|---|---|---|---|---|---|---|
| FY 2025 | 2025-12-31 | $14.71B | $1.78B | $3.58B | n/a | $270.2M | $700.3M |
| FY 2024 | 2024-12-31 | $13.64B | $1.76B | $3.68B | n/a | $303.7M | $532.0M |
| FY 2023 | 2023-12-31 | $12.14B | $1.38B | $2.93B | n/a | $537.2M | $501.5M |
| FY 2022 | 2022-12-31 | $11.17B | $1.38B | $2.57B | n/a | $94.1M | $235.2M |
| FY 2021 | 2021-12-31 | $9.46B | $1.02B | $2.18B | n/a | $122.4M | $355.7M |
Quarters are the three-month figures the company reports; a fourth quarter marked derived is the fiscal year less the three reported quarters, since companies report it only inside the 10-K. Fiscal years are the annual figures. Buybacks are the cash the company paid to repurchase its common stock in the year, not the amount authorized. Balance sheet lines are as of 2026-06-30; shares outstanding as of 2026-07-27 from the cover page.
What this page is
W. R. Berkley in the regulatory record
Regulators publish company data in separate files that never sit next to each other: FINRA's twice-monthly short interest, its daily short sale volume, the SEC's fails-to-deliver counts, and each insider's Form 4. A company page puts those series for one ticker on one URL, with planned sales, large holders, 13F holders and financials beside them, so the short position, the daily flow, the settlement fails and what insiders are doing can be read together.
Each section has its own history table, a one-line summary of the latest figures and its own JSON and CSV links, and says when its source last updated.
This page follows W. R. Berkley (WRB), SEC CIK 11544, listed on NYSE, classified by the SEC as fire, marine & casualty insurance. The cross-market tables live on the short interest and insider transactions hubs.
Source and updates
- Short interest
- FINRA consolidated short interestSource: FINRA.Twice a month, about eight business days after settlement. Latest 2026-10-15.JSON and CSV
- Daily short volume
- FINRA Reg SHO daily filesSource: FINRA.Every trading day, the morning after FINRA posts it. Latest 2026-11-03.JSON and CSV
- Fails to deliver
- SEC fails-to-deliver dataSource: SEC.Twice a month, a few weeks after the half month ends. Latest 2026-09-28.JSON and CSV
- Large holders
- SEC EDGAR Schedule 13D and 13GSource: SEC.New filings appear shortly after the SEC posts them. A 13D is due within five business days of crossing 5%; a 13G follows the passive schedule. Latest 2026-10-30.JSON and CSV
- 13F holders
- SEC EDGAR Form 13F-HRSource: SEC.Quarterly, filed within 45 days of quarter end; 30 tracked managers. Latest 2026-06-30.JSON and CSV
- Financials
- SEC EDGAR 10-K and 10-Q filingsSource: SEC.Weekly; values are as filed in the 10-Q and 10-K. Latest 2026-06-30.JSON and CSV
- Earnings dates
- SEC EDGAR 8-K filings (Item 2.02)Source: SEC.Twice a day. Reported dates come from the company's 8-K filings; the next date is marked as an estimate until the 8-K arrives. Latest 2026-10-19.JSON and CSV
- Insider trades
- SEC EDGAR Form 4Source: SEC.New filings appear shortly after the SEC posts them; they're due two business days after the trade. Latest 2026-08-03.JSON and CSV
- Company record
- EDGAR filing index for CIK 11544Ticker, name and exchange from the SEC's company list, refreshed weekly.
- Rate limits
- 10 requests a minute without a key, 30 with a free key from a free account.
How to read it
- Read the position against the flow: rising short interest with a high daily short share is new shorting; rising short interest with a normal short share is old shorts holding on.
- Insider buys next to a large short position are rare and stand out; insider sells next to one are common and mean little.
- Fails to deliver matter relative to the float, not in absolute shares; a million failed shares in a mega cap is noise.
Analysis of what the data shows, not advice. XOOMAR does not recommend buying, selling or holding anything.
Other companies the SEC classifies as fire, marine & casualty insurance
Other company pages
Datasets
Frequently Asked Questions
How much of WRB is sold short?
12,123,696 shares were held short at the 2026-10-15 settlement, 5.6 days of average volume. FINRA publishes the next count about eight business days after the 15th and the last business day of the month.
What is WRB's daily short volume?
On 2026-11-03, 184,604 of the 557,734 WRB shares reported to FINRA were sold short, 33.1% of the day's reported volume. Short volume is a flow for one day, not a position.
Does WRB have fails to deliver?
The SEC's latest file shows 8 WRB shares failed to deliver at settlement 2026-09-28. Fails are reported per settlement date and published twice a month with a lag.
Are WRB insiders buying or selling?
No open-market insider trades were reported for WRB in the last 90 days. The most recent filings are listed below. Latest filing: Welt Philip S (EVP & Secretary) on 2026-08-03.
Who owns 5% or more of WRB?
11 holders report 5% or more of WRB in their latest filing, all on Schedule 13D (active intent). The largest reported stake is WR Berkley & Others LLC at 25.7% of the class (95,557,324 shares), filed 2026-07-21 for an event on 2026-07-17.
What did WRB report last quarter?
In Q2 FY 2026 (quarter ended 2026-06-30) W. R. Berkley reported revenue of $3.72B, up 1.2% from the same quarter a year earlier, and net income of $452.3M (1.15 diluted EPS). In FY 2025 it generated $3.58B of operating cash flow and spent $270.2M on buybacks and $700.3M on dividends.
Which tracked 13F managers own WRB?
6 of the 30 tracked 13F managers held WRB shares at their latest filing, $593.1M in all. The largest: Cliff Asness's AQR Capital Management (3.7M shares, $259.6M), Two Sigma Investments (2.0M shares, $142.0M), Ken Griffin's Citadel Advisors (1.5M shares, $104.1M), Izzy Englander's Millennium Management (936K shares, $66.0M), D. E. Shaw & Co. (290K shares, $20.5M), Ray Dalio's Bridgewater Associates (13K shares, $952K).
Data on this page is provided for informational purposes only and is not financial advice. See our editorial policy.