
Westlake fell 1.6% from $65.18 to $64.13, behind the S&P 500's +10.5%. Its worst day was May 5 (−8.8%), and its low came Nov 20 at $56.38.
Nov 10, 2025 – Nov 9, 2026 · picked from earnings, analyst actions, headlines and the biggest daily moves
Westlake closed at its lowest level of the year, 13.5% below where the year started.
−1.9% · S&P 500 −1.5%
Westlake shares rose 8.5%, while the S&P 500 fell 0.8%.
+8.5% · S&P 500 −0.8%
Story events cover the past 12 months · Times ET
EPS of $-0.25 beat the $-1.46 estimate on $2.5B revenue (est. $2.6B).
+12.0% · S&P 500 +0.7%
Westlake closed at its highest level of the year, 89.3% above where the year started.
+3.2% · S&P 500 0.0%
EPS of $-0.77 missed the $-0.23 estimate on $2.7B revenue (est. $2.8B).
−8.8%, the year's worst day · S&P 500 +0.8%
EPS of $2.01 beat the $1.91 estimate on $3.3B revenue (est. $3.3B).
+15.4%, the year's best day · S&P 500 +1.8%
EPS of $0.45 missed the $0.52 estimate on $3.0B revenue (est. $3.0B).
−0.8% · S&P 500 +1.7%
Where it ended: a close of $64.13 on Nov 9, 2026. Up next: Q4 2026 earnings on Feb 23, 2027 (EPS est. $-0.07, revenue est. $2.7B).
As of the Nov 9, 2026 close
Replay the year: the line draws itself and stops at each of the 7 moments with what happened and how the stock reacted.
Chart by ChartIQ. Events, ratings, quote and fundamentals from Benzinga APIs. Daily bars for WLK and SPY from Benzinga historical bars. Not investment advice.