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 %
PA
101
Profund Advisors
Maryland
$889K -$207K -375 -19%
Principal Financial Group
102
Principal Financial Group
Iowa
$872K – – –
RSCM
103
Rock Springs Capital Management
Maryland
$850K – – –
Federated Hermes
104
Federated Hermes
Pennsylvania
$850K +$510K +926 +150%
WC
105
Woodstock Corp
Massachusetts
$833K – – –
AllianceBernstein
106
AllianceBernstein
Tennessee
$830K +$8.81K +16 +1%
NIT
107
NumerixS Investment Technologies
British Columbia, Canada
$829K +$829K +1,505 New
Simplex Trading
108
Simplex Trading
Illinois
$817K +$488K +887 +148%
Canada Pension Plan Investment Board
109
Canada Pension Plan Investment Board
Ontario, Canada
$816K -$497K -902 -38%
BA
110
BlackRock Advisors
Delaware
$734K -$15.4K -28 -2%
Squarepoint
111
Squarepoint
New York
$723K +$723K +1,312 New
Allianz Asset Management
112
Allianz Asset Management
Germany
$668K +$8.27K +15 +1%
VOYA Investment Management
113
VOYA Investment Management
Georgia
$664K -$6.05K -11 -0.9%
BIM
114
BlackRock Investment Management
Delaware
$574K -$165K -300 -22%
Ohio Public Employees Retirement System (OPERS)
115
Ohio Public Employees Retirement System (OPERS)
Ohio
$553K -$181K -328 -25%
NIP
116
Nicholas Investment Partners
California
$513K -$266K -483 -34%
DCM
117
DAFNA Capital Management
California
$510K +$255K +463 +100%
KBC Group
118
KBC Group
Belgium
$509K +$267K +485 +110%
KA
119
KLCM Advisors
Wisconsin
$499K +$499K +906 New
WJA
120
Williams Jones & Associates
New York
$460K -$394K -716 -46%
Macquarie Group
121
Macquarie Group
Australia
$457K +$457K +831 New
Marshall Wace
122
Marshall Wace
United Kingdom
$441K -$6.73M -12,203 -94%
CGL
123
Clarius Group LLC
Washington
$410K +$410K +746 New
PAMU
124
Pictet Asset Management (UK)
United Kingdom
$393K – – –
Neuberger Berman Group
125
Neuberger Berman Group
New York
$374K +$374K +679 New
3 4
5
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