Spero Therapeutics Inc. (SPRO)

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Institutional Investors' Holdings

Filing Period:

No.	Name	Shares	Value	% Port
1.	Pfizer Inc	2,362,348	$1,700,891	0.34%
2.	Vanguard Group Inc	1,763,620	$1,269,807	0%
3.	Alphabet Inc.	889,979	$640,785	0.04%
4.	Murchinson Ltd.	873,910	$629,215	0.03%
5.	Geode Capital Management, Llc	524,869	$378,005	0%