BLUE

bluebird bio
BLUE

Overview Fund Activity
Delisted

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

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187 hedge funds and large institutions have $1.71B invested in bluebird bio in 2016 Q1 according to their latest regulatory filings, with 35 funds opening new positions, 81 increasing their positions, 48 reducing their positions, and 38 closing their positions.

New
Increased
Maintained
Reduced
Closed
Holders
187
Holders Change
-6
Holders Change %
-3.11%
% of All Funds
4.99%
Holding in Top 10
4
Holding in Top 10 Change
+1
Holding in Top 10 Change %
+33.33%
% of All Funds
0.11%
New
35
Increased
81
Reduced
48
Closed
38
Calls
$16.8M
Puts
$31M
Net Calls
-$14.2M
Net Calls Change
-$1.39M

Top Buyers

1
Wellington Management Group
Wellington Management Group
Massachusetts
+$51.1M
2
GPP
Great Point Partners
Connecticut
+$16.7M
3
ACH
ArrowMark Colorado Holdings
Colorado
+$10.7M
4
State Street
State Street
Massachusetts
+$10.5M
5
Susquehanna International Group
Susquehanna International Group
Pennsylvania
+$10.4M

Top Sellers

1
PHS
PFM Health Sciences
California
-$42.9M
2
Capital World Investors
Capital World Investors
California
-$31.2M
3
Ameriprise
Ameriprise
Minnesota
-$16.7M
4
Capital Fund Management (CFM)
Capital Fund Management (CFM)
France
-$16.6M
5
State of Tennessee, Department of Treasury
State of Tennessee, Department of Treasury
Tennessee
-$12.3M
Name Holding Trade Value Shares
Change 		Shares
Change %
State Board of Administration of Florida Retirement System
76
State Board of Administration of Florida Retirement System
Florida
$1.62M +$6.61K +12 +0.4%
AQR Capital Management
77
AQR Capital Management
Connecticut
$1.6M -$4.1M -7,451 -72%
CG
78
Cutler Group
California
$1.54M -$786K -1,428 -34%
RhumbLine Advisers
79
RhumbLine Advisers
Massachusetts
$1.5M -$20.9K -38 -1%
FAM
80
Fred Alger Management
New York
$1.45M -$621K -1,127 -30%
USAA
81
United Services Automobile Association
Texas
$1.43M +$1.43M +2,589 New
PPA
82
Parametric Portfolio Associates
Washington
$1.38M +$768K +1,395 +125%
LCM
83
Laurion Capital Management
New York
$1.33M +$1.33M +2,409 New
SFM
84
Sphera Funds Management
Israel
$1.28M +$1.28M +2,316 New
CPIM
85
Columbia Partners Investment Management
Virginia
$1.27M -$16K -29 -1%
MIG
86
Mariner Investment Group
New York
$1.23M -$213K -386 -15%
BG
87
Bellevue Group
Switzerland
$1.23M +$1.23M +2,239 New
TI
88
Turner Investments
Pennsylvania
$1.23M +$1.22M +2,211 +11,637%
ProShare Advisors
89
ProShare Advisors
Maryland
$1.2M -$116K -211 -9%
Citadel Advisors
90
Citadel Advisors
Florida
$1.18M +$239K +434 +25%
Jane Street
91
Jane Street
New York
$1.12M +$16K +29 +1%
Creative Planning
92
Creative Planning
Kansas
$1.12M +$188K +342 +20%
IHM
93
Iguana Healthcare Management
New York
$1.06M +$1.06M +1,930 New
SGH
94
Sivik Global Healthcare
Connecticut
$1.06M +$1.06M +1,930 New
State of Wisconsin Investment Board
95
State of Wisconsin Investment Board
Wisconsin
$1.06M -$39.6K -72 -4%
BG
96
BlackRock Group
United Kingdom
$1.05M +$106K +193 +11%
WBC
97
Westpac Banking Corp
Australia
$1.05M +$1.05M +1,899 New
GH
98
GAM Holding
Switzerland
$1.04M -$761K -1,382 -42%
CWM
99
Cabot Wealth Management
Massachusetts
$899K -$19.8K -36 -2%
TI
100
Trexquant Investment
Connecticut
$893K +$893K +1,621 New
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4
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