BLUE

bluebird bio
BLUE

Overview Fund Activity
Delisted

BLUE was delisted on the 30th of May, 2025.

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229 hedge funds and large institutions have $1.59B invested in bluebird bio in 2021 Q1 according to their latest regulatory filings, with 48 funds opening new positions, 85 increasing their positions, 64 reducing their positions, and 78 closing their positions.

New
Increased
Maintained
Reduced
Closed
Holders
229
Holders Change
-33
Holders Change %
-12.6%
% of All Funds
4.03%
Holding in Top 10
1
Holding in Top 10 Change
+1
Holding in Top 10 Change %
%
% of All Funds
0.02%
New
48
Increased
85
Reduced
64
Closed
78
Calls
$25.8M
Puts
$45.8M
Net Calls
-$20M
Net Calls Change
-$16.8M

Top Buyers

1
Wellington Management Group
1
Wellington Management Group
Massachusetts
$209M
2
AC
2
Armistice Capital
New York
$59.2M
3
SCM
3
Suvretta Capital Management
New York
$39.3M
4
SC
4
Sessa Capital
New York
$26.4M
5
CS
5
Credit Suisse
Switzerland
$70M

Top Sellers

1
Capital Research Global Investors
1
Capital Research Global Investors
California
$0
2
Sands Capital Management
2
Sands Capital Management
Virginia
$0
3
Capital World Investors
3
Capital World Investors
California
$0
4
Capital International Investors
4
Capital International Investors
California
$0
5
CC
5
Casdin Capital
New York
$0
Name Holding Trade Value Shares
Change 		Shares
Change %
DA
76
Duality Advisers
Florida
$1.83M -$1.04M -2,656 -36%
PP
77
PDT Partners
New York
$1.8M -$782K -2,001 -30%
UR
78
USCA RIA
Texas
$1.72M +$600K +1,537 +53%
Wolverine Trading
79
Wolverine Trading
Illinois
$1.68M +$1.68M +4,532 New
GF
80
Gabelli Funds
New York
$1.67M +$1.67M +4,264 New
LP
81
LMR Partners
United Kingdom
$1.57M +$1.57M +4,016 New
State of New Jersey Common Pension Fund D
82
State of New Jersey Common Pension Fund D
New Jersey
$1.56M +$218K +558 +16%
BNP Paribas Financial Markets
83
BNP Paribas Financial Markets
France
$1.52M -$191K -488 -11%
Barclays
84
Barclays
United Kingdom
$1.48M +$140K +358 +10%
GC
85
Guggenheim Capital
Illinois
$1.34M +$102K +261 +8%
VRS
86
Virginia Retirement Systems
Virginia
$1.33M +$636K +1,629 +92%
Legal & General Group
87
Legal & General Group
United Kingdom
$1.27M +$134K +343 +12%
Citadel Advisors
88
Citadel Advisors
Florida
$1.26M -$960K -2,459 -43%
FAIM
89
Financial Advocates Investment Management
Washington
$1.17M +$1.05M +2,232 +930%
Ohio Public Employees Retirement System (OPERS)
90
Ohio Public Employees Retirement System (OPERS)
Ohio
$1.16M +$178K +456 +18%
VIA
91
Vident Investment Advisory
Georgia
$1.16M – – –
AA
92
AlphaCentric Advisors
Puerto Rico
$1.13M +$854K +2,185 +308%
PM
93
Parametrica Management
Hong Kong
$1.08M +$1.08M +2,911 New
WP
94
Woodline Partners
California
$1.04M +$1.04M +2,663 New
Deutsche Bank
95
Deutsche Bank
Germany
$994K -$2.33M -5,976 -70%
Franklin Resources
96
Franklin Resources
California
$968K -$1.49M -3,819 -61%
SEI Investments
97
SEI Investments
Pennsylvania
$918K -$632K -1,173 -41%
Vontobel Holding
98
Vontobel Holding
Switzerland
$905K -$2.74K -7 -0.3%
ECG
99
EPIQ Capital Group
California
$852K – – –
DekaBank Deutsche Girozentrale
100
DekaBank Deutsche Girozentrale
Germany
$850K +$82.9K +223 +11%
2 3
4
5 6