WESTLAKE CORP (WLK) Institutional Ownership and Insiders Activity

WESTLAKE CORP (WLK) is widely held by institutional investors, with 344 firms reporting positions valued at approximately $2.97B based on SEC Form 13F filings for the quarter ended June 30, 2026.

Blackrock, Inc. is the largest disclosed holder, reporting approximately $240.47M in WLK holdings in its latest filing.

Recent insider activity includes 12 tracked Form 4 transactions over the last three months, reflecting ongoing executive and director trading activity.