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UNAUDITED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Comprehensive income (loss)
Net income		$ 22,330		$ 41,455
Other Comprehensive Income (Loss), Net of Tax [Abstract]
Foreign currency translation adjustment	$ 12,537	3,231	$ 12,537	(1,749)
Net unrealized loss on available for sale investment	0	(28)	0	(5,024)
Other comprehensive income (loss)	12,537	3,203	12,537	(6,773)
Comprehensive income for the period	20,460	24,625	43,723	31,987
Comprehensive income attributable to the noncontrolling interests	(9,994)	(3,614)	(10,987)	(4,636)
Comprehensive income attributable to Stagwell Inc.	$ 10,466	$ 21,011	$ 32,736	$ 27,351

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