70.80 USD
↘ 0.02 (0.02%)AFTER HOURS (AS OF Fri 08:15 PM EDT)
WLK Stock After Hours
Westlake Corporation
WLKNYSE • USD
Market: CLOSED
After-hours trading runs 4:00 PM – 8:00 PM ET.
WLK last traded at $70.80 after hours, down $0.01 (0.02%) from its regular-session close of $70.81.
📅 WLK is expected to report earnings around Oct 29, 2026 before the open (estimated), with an estimated EPS of $1.39. WLK earnings details →
WLK After Hours Chart
WLK After Hours News
Gap Analytics — 5-year history, 5% minimum gap
Over the past 5 years, WLK has had 12 qualifying gap events (gaps of 5% or more at the open) — 4 gap-ups and 8 gap-downs. Gap-ups averaged +8.1%, 100% have fully filled, median time to fill 5 trading days. Gap-downs averaged -8.3%, 50% have fully filled, median time to fill 9.5 trading days. Most recent: a -5.1% gap down on May 6, 2026, still unfilled. Average 20-trading-day return after a WLK gap up: +5.96%. After a gap down: -1.46%.
Gap Ups4 events
Fill Rate
100.0%
Avg Gap
8.1%
Avg 50% Fill
2.5d
Avg Fill
5d
Gap Downs8 events
Fill Rate
50.0%
Avg Gap
8.3%
Avg 50% Fill
1d
Avg Fill
9.5d
Avg Gap Fill by Timeframes
Gap Ups
| 1 day | 1 week | 2 week | 4 week | |
|---|---|---|---|---|
| fills 25% | 100% | 100% | 100% | 100% |
| fills 50% | 50% | 100% | 100% | 100% |
| fills 75% | 0% | 75% | 75% | 75% |
| fills 100% | 0% | 75% | 75% | 75% |
Gap Downs
| 1 day | 1 week | 2 week | 4 week | |
|---|---|---|---|---|
| fills 25% | 100% | 100% | 100% | 100% |
| fills 50% | 75% | 75% | 88% | 88% |
| fills 75% | 50% | 63% | 63% | 63% |
| fills 100% | 13% | 25% | 25% | 38% |
Complete Gap History — 12 events
| Date | Gap From | Gap % | Status | Days to 50% | Days to Fill | % of Gap Filled After | |||
|---|---|---|---|---|---|---|---|---|---|
| 1 day | 1 week | 2 week | 4 week | ||||||
| 2026-05-06 | $104.78 | -5.06% | Open | 1d | — | 58% | 58% | 58% | 58% |
| 2026-05-05 | $114.87 | -10.59% | Open | — | — | 35% | 35% | 35% | 35% |
| 2026-04-08 | $123.39 | -7.41% | Open | 1d | — | 73% | 91% | 91% | 91% |
| 2026-02-24 | $93.02 | +10.43% | Filled | 1d | 56d | 50% | 50% | 50% | 50% |
| 2025-10-30 | $73.47 | -5.38% | Filled | 1d | 30d | 84% | 84% | 84% | 84% |
| 2025-08-05 | $76.25 | +8.84% | Filled | 4d | 5d | 34% | 100% | 100% | 100% |
| 2025-05-12 | $80.00 | +5.42% | Filled | 4d | 4d | 27% | 100% | 100% | 100% |
| 2025-05-02 | $92.27 | -13.86% | Open | 7d | — | 39% | 39% | 61% | 61% |
| 2024-02-20 | $144.15 | -12.39% | Filled | 1d | 17d | 79% | 85% | 86% | 100% |
| 2023-03-13 | $110.43 | -5.26% | Filled | 1d | 1d | 100% | 100% | 100% | 100% |
| 2022-11-03 | $96.07 | -6.38% | Filled | 1d | 2d | 80% | 100% | 100% | 100% |
| 2022-10-14 | $90.50 | +7.86% | Filled | 1d | 5d | 75% | 100% | 100% | 100% |
Frequently Asked Questions
What is WLK's after-hours price?
Westlake (WLK) is trading at $70.80 after hours, down $0.01 (0.02%) from its regular-session close of $70.81.
Why is WLK moving after hours?
WLK is down 0.02% in after-hours trading. Moves in this session almost always follow something released after the 4:00 PM ET close — an earnings report, guidance, a filing, or news — and trade on far thinner volume than the regular session, so the size of the move can overstate what the market will settle on at the next open.
When does WLK after-hours trading start and end?
After-hours trading in WLK on the NYSE runs from 4:00 PM to 8:00 PM ET on trading days, immediately after the regular session closes. Not every broker offers the full window, and liquidity thins sharply after about 6:30 PM ET.
Will WLK's after-hours move hold at the open?
An after-hours move that carries into the next session becomes an opening gap, and WLK's gap history is the best guide to what happens next: 100% of WLK gap-ups have fully filled, and 50% of gap-downs have filled over the past 5 years. Fill rates this high mean a large after-hours move is more often faded than extended.
When does WLK report earnings?
WLK is expected to report earnings around Oct 29, 2026 before the open (estimated), with an estimated EPS of $1.39. Earnings are the most common cause of a large after-hours move, since most companies report after the close.