Hudson Bay Capital Management’s Summit Materials, Inc. Class A Common Stock SUM Stock Holding History

Hudson Bay Capital Management’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	-971,443	Closed	-$49.2M	–	1542
2024 Q4	$49.2M	Buy	+971,443	New	+$45.4M	0.17%	131
2021 Q1	–	Sell	-22,839	Closed	-$451K	–	970
2020 Q4	$451K	Sell	22,839 -131,324	-85%	-$2.44M	﹤0.01%	500
2020 Q3	$2.51M	Buy	154,163 +131,321	+575%	+$2.1M	0.04%	329
2020 Q2	$361K	Buy	+22,842	New	+$328K	0.01%	420
2020 Q1	–	Sell	-146,862	Closed	-$3.45M	–	594
2019 Q4	$3.45M	Sell	146,862 -58,886	-29%	-$1.34M	0.08%	224
2019 Q3	$4.49M	Buy	+205,748	New	+$4.06M	0.12%	165
2018 Q3	–	Sell	-55,918	Closed	-$1.44M	–	935
2018 Q2	$1.44M	Sell	55,918 -37,417	-40%	-$1.04M	0.02%	583
2018 Q1	$2.78M	Buy	+93,335	New	+$2.88M	0.06%	369
2015 Q4	–	Sell	-65,410	Closed	-$1.16M	–	237
2015 Q3	$1.16M	Buy	+65,410	New	+$1.51M	0.05%	154

Other funds holding SUM

SFCL

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

Principal Securities Des Moines, Iowa $6.82B AUM 17.15% 1-Year Est. Return

DekaBank Deutsche Girozentrale Frankfurt, Germany $60.6B AUM 23.27% 1-Year Est. Return

WAM

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

IFP Advisors Tampa, Florida $4.82B AUM 20.19% 1-Year Est. Return

HNB

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

Hudson Bay Capital Management's SUM Position: Q1 2025 in Review

Hudson Bay Capital Management sold out of Summit Materials, Inc. Class A Common Stock (SUM) in Q1 2025, closing a stake of 971,443 shares — an estimated $49.2M sold.

Hudson Bay Capital Management first reported a position in SUM in Q3 2015 and held it in 9 quarters. The position peaked at $49.2M in Q4 2024. 7 funds tracked by Wall St. Rank hold SUM as of Q1 2025.

Hudson Bay Capital Management reported no remaining Summit Materials, Inc. Class A Common Stock position as of Q1 2025 after selling out during the quarter.
Hudson Bay Capital Management sold 971,443 Summit Materials, Inc. Class A Common Stock shares in Q1 2025, an estimated $49.2M.
Hudson Bay Capital Management first reported a position in Summit Materials, Inc. Class A Common Stock in Q3 2015 and held it in 9 quarters.
Hudson Bay Capital Management's Summit Materials, Inc. Class A Common Stock position peaked at $49.2M in Q4 2024.
7 funds tracked by Wall St. Rank held Summit Materials, Inc. Class A Common Stock as of Q1 2025.

Based on Hudson Bay Capital Management's 13F filing for Q1 2025, filed 14 May 2025.