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WRB · Berkley W R Corp · Short Volume

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$73.80 +0.25 (+0.34%)
S&P 500 member Russell 1000 member Rebalance outlook locked
Market Cap
$27.30B
Shares
371.23M
Volume · Oct 14 2.02M Avg daily vol (3M) 2.49M

Daily short-sale volume published by FINRA from its trade-reporting facilities. It measures how many shares were sold short each day as a share of total volume — a daily flow, not the total outstanding short position.

Pull daily short volume through the short interest API or MCP →
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    • Short Volume

    Date Short Volume Short Exempt Total Volume Short %
    2026-10-14 203,307 0 504,365 40.3%
    2026-10-13 326,080 869 641,496 50.8%
    2026-10-12 207,808 475 470,811 44.1%
    2026-10-09 313,126 444 646,927 48.4%
    2026-10-08 416,740 429 961,228 43.4%
    2026-10-07 480,709 343 787,870 61.0%
    2026-10-06 576,233 123 1,047,080 55.0%
    2026-10-05 301,122 139 747,001 40.3%
    2026-10-02 254,034 74 600,283 42.3%
    2026-10-01 373,864 5,620 717,566 52.1%
    2026-09-30 297,330 405 598,028 49.7%
    2026-09-29 261,695 1,196 567,306 46.1%
    2026-09-28 346,426 100 632,882 54.7%
    2026-09-25 358,936 548 758,259 47.3%
    2026-09-24 289,686 201 596,578 48.6%
    2026-09-23 225,574 204 591,946 38.1%
    2026-09-22 298,241 157 782,349 38.1%
    2026-09-21 209,322 2,518 771,284 27.1%
    2026-09-18 405,965 970 897,846 45.2%
    2026-09-17 433,761 0 801,451 54.1%
    2026-09-16 427,996 228 958,939 44.6%
    2026-09-15 412,029 185 685,117 60.1%
    2026-09-14 500,377 827 839,979 59.6%
    2026-09-11 639,066 125 940,936 67.9%
    2026-09-10 826,292 198 1,311,742 63.0%
    2026-09-09 791,730 4 1,186,833 66.7%
    2026-09-08 960,929 0 1,443,248 66.6%
    2026-09-04 430,201 587 652,037 66.0%
    2026-09-03 546,965 183 842,746 64.9%
    2026-09-02 388,109 5,793 652,351 59.5%
    2026-09-01 466,152 29 716,780 65.0%
    2026-08-31 267,867 0 476,201 56.3%
    2026-08-28 282,431 8,984 450,983 62.6%
    2026-08-27 451,105 543 650,309 69.4%
    2026-08-26 234,838 0 418,957 56.1%
    2026-08-25 308,327 932 561,724 54.9%
    2026-08-24 271,575 358 470,767 57.7%
    2026-08-21 294,333 1,050 466,178 63.1%
    2026-08-20 306,718 650 502,017 61.1%
    2026-08-19 253,636 182 478,825 53.0%
    2026-08-18 325,718 40 522,994 62.3%
    2026-08-17 221,672 223 372,217 59.6%
    2026-08-14 215,977 56 400,005 54.0%
    2026-08-13 243,210 525 467,636 52.0%
    2026-08-12 195,504 3,723 422,208 46.3%
    2026-08-11 178,313 4 361,335 49.3%
    2026-08-10 243,373 13 461,796 52.7%
    2026-08-07 218,039 10 504,120 43.3%
    2026-08-06 281,797 0 1,055,406 26.7%
    2026-08-05 168,661 136 445,305 37.9%
    Showing 1–50 of 66 days
    Key facts CIK 11544 CUSIP 084423102 13F (30d) 72 filings 64 filers Visit website Investor relations