BLUE

bluebird bio
BLUE

Overview Fund Activity
Delisted

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

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251 hedge funds and large institutions have $6.04B invested in bluebird bio in 2018 Q4 according to their latest regulatory filings, with 37 funds opening new positions, 98 increasing their positions, 76 reducing their positions, and 73 closing their positions.

New
Increased
Maintained
Reduced
Closed
Holders
251
Holders Change
-37
Holders Change %
-12.85%
% of All Funds
5.6%
Holding in Top 10
1
Holding in Top 10 Change
-1
Holding in Top 10 Change %
-50%
% of All Funds
0.02%
New
37
Increased
98
Reduced
76
Closed
73
Calls
$169M
Puts
$88.3M
Net Calls
+$80.8M
Net Calls Change
+$54.9M

Top Buyers

1
Wellington Management Group
Wellington Management Group
Massachusetts
+$300M
2
Capital International Investors
Capital International Investors
California
+$178M
3
Fiera Capital (Canada)
Fiera Capital (Canada)
Quebec, Canada
+$33M
4
Capital World Investors
Capital World Investors
California
+$28.5M
5
Two Sigma Investments
Two Sigma Investments
New York
+$25.3M

Top Sellers

1
T. Rowe Price Associates
T. Rowe Price Associates
Maryland
-$137M
2
RG
Redmile Group
California
-$36.8M
3
Bank of New York Mellon
Bank of New York Mellon
New York
-$35.3M
4
MCM
Masters Capital Management
Georgia
-$30.7M
5
AllianceBernstein
AllianceBernstein
Tennessee
-$27.9M
Name Holding Trade Value Shares
Change 		Shares
Change %
BBA
76
Baker Bros. Advisors
New York
$3.97M -$1.93M -1,501 -33%
Alyeska Investment Group
77
Alyeska Investment Group
Illinois
$3.96M +$3.96M +3,085 New
Principal Financial Group
78
Principal Financial Group
Iowa
$3.89M -$238K -185 -6%
TD Asset Management
79
TD Asset Management
Ontario, Canada
$3.87M -$1.2M -933 -24%
GC
80
Guggenheim Capital
Illinois
$3.75M +$129K +100 +4%
EAM
81
Erste Asset Management
Austria
$3.53M +$3.53M +2,799 New
FLAM
82
First Light Asset Management
Minnesota
$3.27M -$20.6K -16 -0.6%
Group One Trading
83
Group One Trading
Illinois
$3.21M -$1.74M -1,355 -35%
FAM
84
Fred Alger Management
New York
$3.18M -$2.09M -1,627 -40%
Squarepoint
85
Squarepoint
New York
$3.14M +$3.14M +2,440 New
AllianceBernstein
86
AllianceBernstein
Tennessee
$3.05M -$27.9M -21,731 -90%
GH
87
GAM Holding
Switzerland
$2.92M -$1.36M -1,057 -32%
VOYA Investment Management
88
VOYA Investment Management
Georgia
$2.87M +$59.1K +46 +2%
DCM
89
DAFNA Capital Management
California
$2.68M +$644K +501 +32%
Legal & General Group
90
Legal & General Group
United Kingdom
$2.64M +$257K +200 +11%
PPA
91
Parametric Portfolio Associates
Washington
$2.62M +$29.6K +23 +1%
BJL
92
Brighton Jones LLC
Washington
$2.41M +$3.86K +3 +0.2%
Treasurer of the State of North Carolina
93
Treasurer of the State of North Carolina
North Carolina
$2.36M +$12.9K +10 +0.5%
TRSOTSOK
94
Teachers Retirement System of the State of Kentucky
Kentucky
$2.3M +$412K +321 +22%
EVM
95
Eaton Vance Management
Massachusetts
$2.24M +$803K +625 +56%
Fidelity International
96
Fidelity International
Bermuda
$2.21M -$20.2M -15,700 -90%
Retirement Systems of Alabama
97
Retirement Systems of Alabama
Alabama
$2.19M +$397K +309 +22%
CII
98
Capital International Inc
California
$2.12M -$64.3K -50 -3%
WM
99
WS Management
Florida
$2.03M -$1.31M -1,019 -39%
ProShare Advisors
100
ProShare Advisors
Maryland
$2M -$373K -290 -16%
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