Summit Materials Inc. (SUM)

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Institutional Investors' Holdings

Filing Period:

No.	Name	Shares	Value	% Port
1.	Advisor Group Holdings, Inc.	13,701	$693,270	0%
2.	Wfa Asset Management Corp	188	$6,883	0%
3.	Huntington National Bank	2	$105	0%
4.	Principal Securities, Inc.	0	$0	0%
5.	Efficient Wealth Management Llc	0	$0	0%