Generation Bio Co. (GBIO)

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Institutional Investors' Holdings

Filing Period:

No.	Name	Shares	Value	% Port
1.	Atlas Venture Life Science Advisors, Llc	8,279,484	$3,353,190	0.64%
2.	Fmr Llc	4,752,415	$1,924,728	0%
3.	Blackrock, Inc.	3,405,178	$1,379,096	0%
4.	Vanguard Group Inc	2,619,709	$1,060,982	0%
5.	Bank Of America Corp	1,287,186	$521,311	0%