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ROCKWOOD RESEARCH · A CORPORATE FILINGS WEBSITE|STRAIGHT FROM THE SOURCE · SEC EDGAR|SPONSOREDYour message on this tape — bid on the Rockwood Ad Exchange · Rockwood Ad Exchange|
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WESTLAKE CORP

Industrial Organic Chemicals · SIC 2860CIK 1262823Held by 4 tracked managersEDGAR filings ↗10-K/10-Q ↗

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Shares held by quarter · Q1 2026–Q2 2026 (2 quarters stored)

Capital World Investors
Orbis Investment Management
Robotti & Company Advisors
First Eagle Investment Management

Stored snapshots only: quarters before the earliest stored filing are not shown, and the first stored quarter is not the start of any position.

Position history by manager