Westlake Corporation (WLK) shares fell 1.3% to $66.84 as of September 29, 2026, a modest decline from the prior close of $67.71. BestStocks flagged the session as a major change for WLK. The move is tied to price move down. Below, we break down what changed for WLK, why it matters for investors, how the stock reacted, and the catalysts on the calendar.
What happened
WLK fell 1.3% to $66.84
WLK moved -2.40% from its $68.40 open to a $66.76 close on 2026-09-24. Monitor next session.
This summary describes the catalyst and move as first detected on Sep 24, 2026, 4:43 PM EDT; the stock has continued trading since, so the current price and percentage move (shown above) may be larger or smaller than the figures here.
Material / EarningsWeak confidence
Rel. volume
0.5×
Below Avg
Vs peers
—
No comparable peers
Market cap
$8.6B
New York Stock Exchange
Analyst target
$94
+40.8% vs price
Price chart
Aug 31 – Sep 29
E earnings
F filing
A analyst
V/N other
click a marker to highlight
Change events — click to jump to details
What it means for Westlake Corporation investors
For Westlake Corporation investors, the recent signals add up to a bearish shift. On the constructive side: Westlake Corporation (WLK) moved +9.72% from $73.49 to $80.63 on 2026-08-04; Westlake Corporation (WLK) moved +2.68% from $72.82 to $74.77 on 2026-07-02. Weighing against that: Material negative event; Negative session, down 1.3%. Wall Street's consensus price target sits at $94.14, implying +40.8% upside from $66.84. Over the past 90 days analysts logged 0 upgrades and 1 downgrade. BestStocks rates the overall signal quality weak (35/100). With earnings roughly 30 days out, the next report is the most likely near-term test of the move.
WLK price reaction
WLK last traded at $66.84, down $0.87 (-1.28%) from the previous close of $67.71. The session traded on 0.5× average volume (below avg), so participation was unremarkable. Over the past month the stock has ranged between $66.76 and $76.27, and it currently sits about 1% of the way up that band.
Bullish and bearish analyst opinions on Westlake Corporation (WLK)
The consensus analyst price target on Westlake Corporation (WLK) is $94.14, 40.8% above the recent $66.84. Over the past 90 days analysts logged 0 upgrades, 6 maintains, and 1 downgrade. Here is how the bullish and bearish cases on WLK line up.
▲ The bullish case
+Wall Street's consensus price target of $94.14 implies +40.8% upside from $66.84.
+The Street's most bullish target is $115.00 (+72.1%).
+Westlake Corporation (WLK) moved +9.72% from $73.49 to $80.63 on 2026-08-04.
▼ The bearish case
−1 analyst downgrade in the past 90 days, most recently BMO Capital to Market Perform (2026-09-09).
−Material negative event.
−Negative session, down 1.3%.
−WLK moved -2.88% from its $79.77 open to a $77.47 close on 2026-08-06.
Bull vs bear balanceBearish Shift
BearishNeutralBullish
Weighing both sides, BestStocks' composite read of recent signals is bearish, as the bull-versus-bear meter above shows. This is an educational summary of the bull and bear case, not investment advice.
Analyst price targets and ratings are FMP consensus figures as of Sep 29, 2026; other aggregators may differ. High and low targets show the range of estimates, not forecasts.
Westlake Corporation (WLK) moved −2.35% from $69.40 to $67.77 on September 21, 2026. We checked news, earnings announcements, analyst updates, SEC filings, and corporate actions — no company-specific catalyst was found. The move coincided with WLK reaching a new 30-day low; volume remained near its 5-day average.
Material / Earnings2026-09-14-2.6%
Westlake Corporation (WLK) moved -2.94% from $71.05 to $68.96 on 2026-09-14. We checked news, earnings, analyst updates, filings, and corporate actions — no company-specific catalyst was found. The move coincided with modestly elevated volume (1.4x the 5-day average) and WLK reaching a new 30-day low.
Material / Earnings2026-09-11-1.1%
Westlake Corporation (WLK) moved -1.57% from $71.94 to $70.81 on 2026-09-11. We checked news, earnings announcements, analyst updates, filings, and corporate actions — no company-specific catalyst was found. The stock reached a new 30-day low on below-average volume (0.8x the 5-day average).
Material / Earnings2026-09-10-0.2%
Westlake Corporation (WLK) moved −0.23% from $71.78 to $71.62 on 2026-09-10. We checked news, earnings announcements, analyst updates, SEC filings, and corporate actions — no company-specific catalyst was found. The move coincided with WLK reaching a new 30-day low; volume remained near its 5-day average.
Westlake Corporation shares declined 3.59% to $72.07 as investors digest institutional position adjustments and cautious market reaction to mixed fundamentals. Wellington Management Group LLP trimmed holdings in early September, while Q2 earnings showed a marginal revenue miss and conservative guidance on profitability improvement, according to MarketBeat reporting cited by Google's AI Overview. Volume of 555,149 shares (0.77x expected) reflects normal intraday activity.
Material / Earnings2026-09-03-2.2%
Westlake Corporation (WLK) moved -2.59% from $76.58 to $74.60 on 2026-09-03. We checked news, earnings announcements, analyst updates, SEC filings, and corporate actions — no company-specific catalyst was found. Volume was near its 5-day average, suggesting the move was not driven by unusual trading activity.
Material / Earnings2026-09-02+2.7%
Westlake Corporation (WLK) moved +3.14% from $73.95 to $76.27 on 2026-09-02. We checked news, earnings announcements, analyst updates, SEC filings, and corporate actions — no company-specific catalyst was found. Volume was near its 5-day average, suggesting the move was not driven by unusual trading activity.
Material / Earnings2026-08-24-3.1%
Westlake Corporation (WLK) moved -2.77% from $78.67 to $76.49 on 2026-08-24. We checked news, earnings announcements, analyst updates, SEC filings, and corporate actions — no company-specific catalyst was found.
Upcoming catalysts & outlook
Next earnings
2026-10-29 (est.)
in 30 days
10-Q Filing (est.)
2026-11-04
Medium impact
Thesis shift
Bearish Shift
bearish signal
Risk level
Medium
from change events
Frequently asked questions about WLK
Why did Westlake Corporation (WLK) stock move?
WLK fell 1.3% to $66.84. The move coincided with the context summarized above, though no single company-specific catalyst was independently confirmed.
How much did WLK stock fall?
WLK lost 1.28% ($0.87) versus the prior close of $67.71, last trading at $66.84 on 0.5× average volume.
When is Westlake Corporation's next earnings date?
WLK's next earnings report is estimated for 2026-10-29 — about 30 days away.
What is the analyst price target for WLK?
The consensus analyst price target for WLK is $94.14, about 40.8% above the current $66.84. Over the past 90 days, analysts recorded 0 upgrades, 6 maintains, and 1 downgrade.
How BestStocks tracks WLK
This page is generated automatically by BestStocks' change-detection system after price move down was detected and verified against independent data sources. It draws on 20 tracked change events for WLK, cross-checked against the data sources listed below. Price, volume, and market-capitalization figures are the live intraday quote as of September 29, 2026 and refresh as new information is detected; for companies with multiple share classes, market-cap figures can differ by data source. Analyst price targets and ratings are FMP consensus. This is an educational summary of what changed and why — not personalized investment advice.
