Summit Materials Inc. (SUM)

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Institutional Investors' Holdings

Filing Period: Filing is Ongoing

No.	Name	Shares	Value	% Port
1.	Principal Securities, Inc.	1,922	$97,253	0%
2.	Wfa Asset Management Corp	188	$8,380	0%
3.	Ifp Advisors, Inc	38	$2,625	0%
4.	Dekabank Deutsche Girozentrale	1,753	$78	0%
5.	Schwab Charles Investment Management Inc	0	$0	0%