WLK: Ascending Triangle detected on 31 Mar 2026

Westlake Corporation reported Q4 2025 results on February 24, 2026, and an ascending triangle has formed with the stock currently at $116.00—just 1% below its 52-week high. The pattern displays solid structure (15.0/15) and above-average volume (ratio 1.52x), with a breakout score of 11.7/13. At 63.1% win probability and 75.7 overall score, this pattern ranks as moderate-to-good quality. Key support sits at $112.44, resistance at $116.31, with a conservative target of $123.14 representing a 6.1% upside. RSI at 64.49 shows healthy momentum but not yet overbought, while the ascending triangle suggests consolidation ahead of a directional move.

Despite reporting a substantial earnings miss with an actual EPS of -$4.22 versus a forecasted -$1.40, the stock surged over 10% in premarket trading, signaling investor confidence in the company's Three Pillar Profitability Improvement Plan designed to deliver $600 million in EBITDA benefits during 2026. Management expects the 3-pillar strategy to deliver $600 million of earnings improvement in 2026 through cost reductions, plant closures, and operational enhancements, with Westlake having achieved $170 million of structural cost reductions in 2025. The HIP segment is expected to benefit from the January 2026 acquisition of ACI. However, management noted that macroeconomic conditions are not expected to be a tailwind to 2026 goals as global industrial and manufacturing activity remains challenging. This turnaround narrative is driving recent strength, with the stock rallying 58.1% over three months on restructuring optimism.

A successful breakout above the $116.31 resistance would target $123.14, representing the measured move in an ascending triangle. The pattern suggests higher lows and resistance being tested; confirmation requires volume above the 1.34M average threshold—currently exceeded at 2.03M shares. Invalidation occurs on a close below $112.44 support, which would break the ascending triangle's structural integrity. At 63.1% historical win probability, this pattern shows solid odds, though the combination of recent 58% three-month gains and moderate breakout score (11.7) suggests the pattern is already well-advanced in its cycle.

Westlake took $511 million in restructuring charges related to shutdowns of three North American chlorovinyls plants, one styrene plant, and the Pernis facility, signaling execution risk. Management noted that removing VAT drawback effective April 1 represents about a 13% impact in overall pricing for Chinese PVC exports—a material headwind to near-term margins. The industrial sector regime is bearish (-0.34), and broader market regime is bearish (-0.41), creating negative macro backdrop. Beta of 1.56 amplifies volatility risk. CFO M. Steven Bender announced plans to retire, with departure effective when a successor is appointed, introducing financial leadership uncertainty. With RSI at 64.49 and the stock 58% higher in three months, elevated volatility (44.05%) and recent 6.91% one-week gains indicate extended conditions vulnerable to profit-taking.