Bluebird Bio Inc. (BLUE)

Market is closed

Institutional Investors' Holdings

Filing Period:

No.	Name	Shares	Value	% Port
1.	Group One Trading, L.p.CALL	3,851,700	$32,123,178	0.07%
2.	Blackrock, Inc.	708,669	$5,910,299	0%
3.	Vanguard Group Inc	525,414	$4,381,953	0%
4.	Susquehanna International Group, LlpCALL	250,500	$2,089,170	0%
5.	Geode Capital Management, Llc	233,514	$1,947,932	0%