BLUE

bluebird bio
BLUE

Overview Fund Activity
Delisted

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

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241 hedge funds and large institutions have $5.17B invested in bluebird bio in 2017 Q2 according to their latest regulatory filings, with 50 funds opening new positions, 95 increasing their positions, 66 reducing their positions, and 19 closing their positions.

New
Increased
Maintained
Reduced
Closed
Holders
241
Holders Change
+31
Holders Change %
+14.76%
% of All Funds
6.02%
Holding in Top 10
4
Holding in Top 10 Change
+2
Holding in Top 10 Change %
+100%
% of All Funds
0.1%
New
50
Increased
95
Reduced
66
Closed
19
Calls
$109M
Puts
$49M
Net Calls
+$59.7M
Net Calls Change
+$34.8M

Top Buyers

1
Wellington Management Group
Wellington Management Group
Massachusetts
+$63.1M
2
Fidelity Investments
Fidelity Investments
Massachusetts
+$61.7M
3
Capital Research Global Investors
Capital Research Global Investors
California
+$51.8M
4
Vanguard Group
Vanguard Group
Pennsylvania
+$36.1M
5
CAM
Cormorant Asset Management
Massachusetts
+$28.9M

Top Sellers

1
Franklin Resources
Franklin Resources
California
-$50.4M
2
Alyeska Investment Group
Alyeska Investment Group
Illinois
-$25.4M
3
Balyasny Asset Management
Balyasny Asset Management
Illinois
-$21.1M
4
T. Rowe Price Associates
T. Rowe Price Associates
Maryland
-$16.6M
5
State Street
State Street
Massachusetts
-$16.3M
Name Holding Trade Value Shares
Change 		Shares
Change %
Millennium Management
76
Millennium Management
New York
$3.8M +$3.8M +2,790 New
Citigroup
77
Citigroup
New York
$3.78M +$540K +397 +17%
LP
78
LMR Partners
United Kingdom
$3.75M +$3.75M +2,758 New
GC
79
Guggenheim Capital
Illinois
$3.74M -$863K -634 -19%
BJL
80
Brighton Jones LLC
Washington
$3.55M +$3.55M +2,610 New
FLAM
81
First Light Asset Management
Minnesota
$3.55M -$1.63M -1,196 -31%
Susquehanna International Group
82
Susquehanna International Group
Pennsylvania
$3.49M -$1.88M -1,380 -35%
D.E. Shaw & Co
83
D.E. Shaw & Co
New York
$3.47M +$2.07M +1,518 +147%
TRSOTSOK
84
Teachers Retirement System of the State of Kentucky
Kentucky
$3.42M +$261K +192 +8%
RSCM
85
Rock Springs Capital Management
Maryland
$3.36M +$157K +115 +5%
Manulife (Manufacturers Life Insurance)
86
Manulife (Manufacturers Life Insurance)
Ontario, Canada
$3.3M +$16.3K +12 +0.5%
TAM
87
Tocqueville Asset Management
New York
$3.29M – – –
State of Wisconsin Investment Board
88
State of Wisconsin Investment Board
Wisconsin
$3.26M +$3.26M +2,393 New
GH
89
GAM Holding
Switzerland
$3.25M – – –
TAM
90
Tiverton Asset Management
Delaware
$3.07M +$175K +129 +6%
USAA
91
United Services Automobile Association
Texas
$3.05M +$136K +100 +5%
CCS
92
Crosspoint Capital Strategies
California
$3.04M +$3.04M +2,234 New
QF
93
QVT Financial
New York
$3.02M -$5.28M -3,881 -64%
UBS Group
94
UBS Group
Switzerland
$2.99M +$2.35M +1,729 +367%
MLICM
95
Metropolitan Life Insurance Company (MetLife)
New York
$2.95M – – –
AC
96
Armistice Capital
New York
$2.94M +$420K +309 +17%
ProShare Advisors
97
ProShare Advisors
Maryland
$2.68M -$196K -144 -7%
AIG
98
American International Group
New York
$2.67M +$83K +61 +3%
AQR Capital Management
99
AQR Capital Management
Connecticut
$2.63M +$670K +492 +34%
ACM
100
Atika Capital Management
New York
$2.63M +$630K +463 +32%
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