UBS O'Connor’s Summit Materials, Inc. Class A Common Stock SUM Stock Holding History

UBS O'Connor’s Portfolio SUM Stock Details SUM Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2025 Q1	–	Sell	-2,033,333	Closed	-$103M	–	499
2024 Q4	$103M	Buy	+2,033,333	New	+$95M	2.56%	10
2016 Q4	–	Sell	-252,603	Closed	-$4.49M	–	493
2016 Q3	$4.49M	Buy	+252,603	New	+$4.89M	0.07%	222

Other funds holding SUM

SFCL

Strengthening Families & Communities LLC Boston, Massachusetts $401M AUM 33.17% 1-Year Est. Return

Principal Securities Des Moines, Iowa $8.31B AUM 21.94% 1-Year Est. Return

DekaBank Deutsche Girozentrale Frankfurt, Germany $59.2B AUM 26.02% 1-Year Est. Return

WAM

WFA Asset Management Whitefish Bay, Wisconsin $184M AUM 12.29% 1-Year Est. Return

IFP Advisors Tampa, Florida $5.54B AUM 27.43% 1-Year Est. Return

HNB

Huntington National Bank Columbus, Ohio $18.1B AUM 24.69% 1-Year Est. Return

UBS O'Connor's SUM Position: Q1 2025 in Review

UBS O'Connor sold out of Summit Materials, Inc. Class A Common Stock (SUM) in Q1 2025, closing a stake of 2,033,333 shares — an estimated $103M sold.

UBS O'Connor first reported a position in SUM in Q3 2016 and held it in 2 quarters. The position peaked at $103M in Q4 2024. 7 funds tracked by Wall St. Rank hold SUM as of Q1 2025.

UBS O'Connor reported no remaining Summit Materials, Inc. Class A Common Stock position as of Q1 2025 after selling out during the quarter.
UBS O'Connor sold 2,033,333 Summit Materials, Inc. Class A Common Stock shares in Q1 2025, an estimated $103M.
UBS O'Connor first reported a position in Summit Materials, Inc. Class A Common Stock in Q3 2016 and held it in 2 quarters.
UBS O'Connor's Summit Materials, Inc. Class A Common Stock position peaked at $103M in Q4 2024.
7 funds tracked by Wall St. Rank held Summit Materials, Inc. Class A Common Stock as of Q1 2025.

Based on UBS O'Connor's 13F filing for Q1 2025, filed 15 May 2025.