Westlake Corporation (WLK)Susquehanna Portfolio Strategies, LLC added to its stake +212K shares

230K

Shares reported · +212K vs prior quarter

0.27%

Disclosed portfolio weight

$16.8M

Reported value

Holdings as of

Jun 30, 2026

Filed

Aug 14, 2026

The story around this disclosure

Every dated public record OQRO holds about the company from 60 days before to 120 days after, oldest first. It shows what was going on; none of it is a stated reason for the trade.

1. Aug 4, 2026Company filing · Form 8-K · Results, Reg FDReported its results, and shared information with investors

What came next

1. Aug 31, 2026Company filing · Form 8-K · Executive changeChanged a top executive or board member“On August 31, 2026, Westlake Corporation (the “Company”) announced the appointment of Tommy E. Darby, age 45, to the position of Vice President, Chief Accounting Officer of the Company, effective immediately.”
2. Sep 24, 2026Company filing · Form 8-K · Restructuring, Reg FDAnnounced job cuts, closures or a restructuring, and shared information with investors“On September 24, 2026, Westlake Corporation (the “Company”) approved a plan to cease operation of its polyvinyl chloride (“PVC”) production plant located in Cologne, Germany, which has an annual production capacity of approximately 165,000 metric tons of PVC per year.”

How to read SEC Form 13F-HR

Form 13F is the quarterly report in which investment managers that oversee $100 million or more list the US-listed stocks and some other securities they held on the last day of the quarter.

Full guide: What is an SEC Form 13F?

What else is on file for Westlake Corporation

For Westlake Corporation, OQRO holds 8 fund holdings reports (13F) dated in the last 90 days.

These are records OQRO holds, counted by their date, not a measure of how much trading took place. Routine paperwork such as option exercises and tax withholding is left out. Everything for the company is on its WLK page.

How this filing works

• SEC Form 13F

Other disclosures at Westlake Corporation

• SEC Form 13F-HRAug 20, 2026
• SEC Form 13F-HRAug 14, 2026
• SEC Form 13F-HRAug 14, 2026
• SEC Form 13F-HRAug 14, 2026
• SEC Form 13F-HRAug 14, 2026
• SEC Form 13F-HRAug 14, 2026

Everything OQRO holds on this company is on its WLK page.