WLK · Westlake Corp
$79.55
-0.64 (-0.80%)
At close · Aug 14
Market Cap
$10.12B
Shares
127.80M
Weekly off-exchange (dark pool / OTC) trading volume reported to FINRA under its OTC/ATS Transparency data. ATS volume is executed on alternating trading systems (dark pools); non-ATS OTC is other over-the-counter dealer volume. The off-exchange share is total off-exchange volume as a percentage of consolidated weekly trading volume for the same Monday–Friday week.
Off-Exchange Volume History
| Week Start | ATS Volume | Non-ATS OTC Volume | Total Off-Exchange | % of FINRA Weekly Volume |
|---|---|---|---|---|
| 2026-07-06 | 2,235,086 | 450,791 | 2,685,877 | 42.9% |
| 2026-06-29 | 1,900,446 | 570,833 | 2,471,279 | 44.2% |
| 2026-06-22 | 2,134,086 | 812,063 | 2,946,149 | 39.2% |
| 2026-06-15 | 1,168,777 | 314,947 | 1,483,724 | 35.2% |
| 2026-06-08 | 1,111,125 | 577,647 | 1,688,772 | 36.9% |
| 2026-06-01 | 999,203 | 400,503 | 1,399,706 | 34.0% |
| 2026-05-25 | 1,085,526 | 373,898 | 1,459,424 | 41.2% |
| 2026-05-18 | 1,611,113 | 313,753 | 1,924,866 | 37.0% |
| 2026-05-11 | 1,832,457 | 552,284 | 2,384,741 | 35.3% |
| 2026-05-04 | 2,650,024 | 621,752 | 3,271,776 | 40.9% |
| 2026-04-27 | 1,483,050 | 404,215 | 1,887,265 | 41.8% |
| 2026-04-20 | 1,486,120 | 447,958 | 1,934,078 | 39.8% |
| 2026-04-13 | 1,684,541 | 551,248 | 2,235,789 | 41.9% |
| 2026-04-06 | 1,687,974 | 545,937 | 2,233,911 | 38.2% |
| 2026-03-30 | 1,743,382 | 416,026 | 2,159,408 | 41.1% |
| 2026-03-23 | 1,789,875 | 602,932 | 2,392,807 | 40.8% |
| 2026-03-16 | 1,896,359 | 538,537 | 2,434,896 | 38.5% |
| 2026-03-09 | 2,157,962 | 366,820 | 2,524,782 | 39.3% |
| 2026-03-02 | 2,756,637 | 575,359 | 3,331,996 | 42.5% |
| 2026-02-23 | 2,425,668 | 715,100 | 3,140,768 | 41.5% |
| 2026-02-16 | 1,727,936 | 253,204 | 1,981,140 | 39.9% |
| 2026-02-09 | 2,010,469 | 595,588 | 2,606,057 | 43.0% |
| 2026-02-02 | 3,517,633 | 531,681 | 4,049,314 | 45.4% |
| 2026-01-26 | 2,242,945 | 785,517 | 3,028,462 | 41.5% |
| 2026-01-19 | 1,578,503 | 250,936 | 1,829,439 | 35.2% |
| 2026-01-12 | 2,835,321 | 541,908 | 3,377,229 | 42.9% |
| 2026-01-05 | 2,408,526 | 1,010,323 | 3,418,849 | 46.3% |
| 2025-12-29 | 1,100,424 | 273,374 | 1,373,798 | 35.3% |
| 2025-12-22 | 1,022,583 | 201,059 | 1,223,642 | 37.4% |
| 2025-12-15 | 3,851,544 | 683,562 | 4,535,106 | 39.6% |
| 2025-12-08 | 2,825,736 | 965,790 | 3,791,526 | 43.6% |
| 2025-12-01 | 3,017,438 | 1,043,211 | 4,060,649 | 46.5% |
| 2025-11-24 | 2,379,118 | 818,030 | 3,197,148 | 38.1% |
| 2025-11-17 | 2,326,182 | 1,505,914 | 3,832,096 | 47.0% |
| 2025-11-10 | 2,168,388 | 518,764 | 2,687,152 | 40.4% |
| 2025-11-03 | 1,504,643 | 446,511 | 1,951,154 | 36.4% |
| 2025-10-27 | 3,067,512 | 650,489 | 3,718,001 | 41.0% |
| 2025-10-20 | 1,535,473 | 355,515 | 1,890,988 | 37.3% |
| 2025-10-13 | 1,580,424 | 529,380 | 2,109,804 | 41.0% |
| 2025-10-06 | 2,241,810 | 650,418 | 2,892,228 | 45.8% |
| 2025-09-29 | 1,723,024 | 467,618 | 2,190,642 | 43.6% |
| 2025-09-22 | 1,844,390 | 837,038 | 2,681,428 | 47.0% |
| 2025-09-15 | 1,842,569 | 354,423 | 2,196,992 | 36.6% |
| 2025-09-08 | 1,636,441 | 260,018 | 1,896,459 | 44.4% |
| 2025-09-01 | 1,420,927 | 218,754 | 1,639,681 | 44.2% |
| 2025-08-25 | 2,051,037 | 468,854 | 2,519,891 | 46.4% |
| 2025-08-18 | 2,077,677 | 756,011 | 2,833,688 | 45.4% |
Showing 1–47 of 47 weeks
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CIK
1262823
CUSIP
960413102
13F (30d)
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