Westlake downgraded to Neutral from Outperform at Mizuho

Mizuho downgraded Westlake (WLK) to Neutral from Outperform with an unchanged price target of $88. The firm cites the company’s late December negative preannouncement and peer Olin’s recent weak March quarter guidance for the downgrade. Mizuho has a bearish industry view of Westlake’s vinyls and polyethylene businesses. The stock has rallied 60% from the November 2025 low on recovery expectations despite the weakening outlook of its core businesses, the analyst tells investors in a research note.