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WLK · Westlake Corp · Short Volume

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$63.50 +1.03 (+1.65%)
S&P 400 member Russell 1000 member Rebalance outlook locked
Market Cap
$8.65B
Shares
127.80M
Volume · Oct 2 1.66M Avg daily vol (3M) 944.5K

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 %
    2026-10-02 336,889 175 559,731 60.2%
    2026-10-01 387,047 701 759,321 51.0%
    2026-09-30 310,075 193 472,091 65.7%
    2026-09-29 473,709 0 718,956 65.9%
    2026-09-28 105,201 0 179,546 58.6%
    2026-09-25 109,283 0 220,905 49.5%
    2026-09-24 158,203 0 254,792 62.1%
    2026-09-23 109,617 0 178,241 61.5%
    2026-09-22 109,663 0 221,532 49.5%
    2026-09-21 93,552 0 180,880 51.7%
    2026-09-18 102,533 0 179,534 57.1%
    2026-09-17 76,138 0 155,116 49.1%
    2026-09-16 80,193 16 148,714 53.9%
    2026-09-15 161,206 52 285,638 56.4%
    2026-09-14 212,570 525 417,162 51.0%
    2026-09-11 104,143 300 177,647 58.6%
    2026-09-10 233,416 0 356,775 65.4%
    2026-09-09 181,141 0 301,106 60.2%
    2026-09-08 93,279 0 187,742 49.7%
    2026-09-04 67,314 4 138,505 48.6%
    2026-09-03 90,928 0 186,461 48.8%
    2026-09-02 152,293 8 252,650 60.3%
    2026-09-01 118,872 14 186,879 63.6%
    2026-08-31 64,428 2 155,399 41.5%
    2026-08-28 142,484 3 250,916 56.8%
    2026-08-27 94,314 0 229,222 41.1%
    2026-08-26 171,589 85 328,504 52.2%
    2026-08-25 80,918 0 189,936 42.6%
    2026-08-24 132,510 1 219,770 60.3%
    2026-08-21 84,402 0 191,158 44.2%
    2026-08-20 112,070 143 236,346 47.4%
    2026-08-19 123,773 5 218,727 56.6%
    2026-08-18 210,035 3 353,528 59.4%
    2026-08-17 194,395 7 311,821 62.3%
    2026-08-14 233,793 0 325,756 71.8%
    2026-08-13 77,634 0 156,318 49.7%
    2026-08-12 136,159 14 228,197 59.7%
    2026-08-11 230,672 5,247 421,041 54.8%
    2026-08-10 298,950 0 463,871 64.4%
    2026-08-07 168,162 0 309,525 54.3%
    2026-08-06 200,656 0 354,959 56.5%
    2026-08-05 379,769 1 782,711 48.5%
    2026-08-04 371,143 300 1,283,206 28.9%
    2026-08-03 420,613 0 1,006,473 41.8%
    2026-07-31 231,100 1 455,284 50.8%
    2026-07-30 183,442 0 565,093 32.5%
    2026-07-29 114,879 87 655,125 17.5%
    2026-07-28 135,846 0 379,065 35.8%
    2026-07-27 166,981 57 579,168 28.8%
    2026-07-24 128,554 54 428,582 30.0%
    Showing 1–50 of 65 days
    Key facts CIK 1262823 CUSIP 960413102 13F (30d) 9 filings 9 filers Visit website Investor relations