Boston Partners’s Westlake Corp WLK Stock Holding History

Boston Partners’s Portfolio WLK Stock Details WLK Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2026 Q2	–	Sell	-31,696	Closed	-$3.7M	–	853
2026 Q1	$3.7M	Buy	+31,696	New	+$3.07M	﹤0.01%	517

Other funds holding WLK

BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return

Capital World Investors Los Angeles, California $846B AUM 46.74% 1-Year Est. Return

T. Rowe Price Associates Baltimore, Maryland $999B AUM 46.22% 1-Year Est. Return

OAG

Orbis Allan Gray Hamilton, Bermuda $29.1B AUM 60.8% 1-Year Est. Return

Dimensional Fund Advisors Austin, Texas $552B AUM 44.19% 1-Year Est. Return

Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM

BIP

Brandes Investment Partners La Jolla, California $14.3B AUM 23.11% 1-Year Est. Return

AQR Capital Management Greenwich, Connecticut $287B AUM 42.33% 1-Year Est. Return

Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM

State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return

Boston Partners's WLK Position: Q2 2026 in Review

Boston Partners sold out of Westlake Corp (WLK) in Q2 2026, closing a stake of 31,696 shares — an estimated $3.7M sold.

Boston Partners first reported a position in WLK in Q1 2026 and held it in 1 quarter. The position peaked at $3.7M in Q1 2026. 358 funds tracked by Wall St. Rank hold WLK as of Q2 2026.

Boston Partners reported no remaining Westlake Corp position as of Q2 2026 after selling out during the quarter.
Boston Partners sold 31,696 Westlake Corp shares in Q2 2026, an estimated $3.7M.
Boston Partners first reported a position in Westlake Corp in Q1 2026 and held it in 1 quarter.
Boston Partners's Westlake Corp position peaked at $3.7M in Q1 2026.
358 funds tracked by Wall St. Rank held Westlake Corp as of Q2 2026.

Based on Boston Partners's 13F filing for Q2 2026, filed 4 Aug 2026.