BLUE

bluebird bio
BLUE

Overview Fund Activity
Delisted

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

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104 hedge funds and large institutions have $742M invested in bluebird bio in 2014 Q2 according to their latest regulatory filings, with 41 funds opening new positions, 34 increasing their positions, 21 reducing their positions, and 19 closing their positions.

New
Increased
Maintained
Reduced
Closed
Holders
104
Holders Change
+21
Holders Change %
+25.3%
% of All Funds
2.99%
Holding in Top 10
1
Holding in Top 10 Change
–
Holding in Top 10 Change %
–
% of All Funds
0.03%
New
41
Increased
34
Reduced
21
Closed
19
Calls
$6.52M
Puts
$2.68M
Net Calls
+$3.84M
Net Calls Change
+$3.91M

Top Buyers

1
DM
1
Deerfield Management
New York
$41.5M
2
Goldman Sachs
2
Goldman Sachs
New York
$12.2M
3
BFA
3
BlackRock Fund Advisors
California
$29.3M
4
PC
4
PointState Capital
New York
$10.6M
5
Vanguard Group
5
Vanguard Group
Pennsylvania
$15.5M

Top Sellers

1
WRF
1
Waddell & Reed Financial
Kansas
$0
2
PHS
2
PFM Health Sciences
California
$0
3
O
3
OrbiMed
New York
$0
4
Millennium Management
4
Millennium Management
New York
$5.46M
5
BA
5
BlackRock Advisors
Delaware
$2.34M
Name Holding Trade Value Shares
Change 		Shares
Change %
WA
101
Winfield Associates
Ohio
$3K +$3K +8 New
LTFS
102
Ladenburg Thalmann Financial Services
Florida
$2K +$2K +4 New
PTC
103
Private Trust Company
Ohio
$1K – – –
WRF
104
Waddell & Reed Financial
Kansas
– -$25M -84,866 Closed
PHS
105
PFM Health Sciences
California
– -$6.62M -22,468 Closed
O
106
OrbiMed
New York
– -$6.57M -22,311 Closed
T. Rowe Price Associates
107
T. Rowe Price Associates
Maryland
– -$4.06M -13,787 Closed
SCA
108
SAC Capital Advisors
Connecticut
– -$2.83M -9,619 Closed
SM
109
Sabby Management
Florida
– -$2.32M -7,858 Closed
AC
110
Ascend Capital
California
– -$1.37M -4,636 Closed
SFM
111
Sphera Funds Management
Israel
– -$1.31M -4,434 Closed
SCM
112
Sigma Capital Management
Connecticut
– -$1.14M -3,860 Closed
BG
113
BlackRock Group
United Kingdom
– -$832K -2,826 Closed
PA
114
Perceptive Advisors
New York
– -$455K -1,544 Closed
JRP
115
Jasper Ridge Partners
California
– -$428K -1,451 Closed
TC
116
TFS Capital
Pennsylvania
– -$302K -1,024 Closed
PIM
117
Partner Investment Management
California
– -$260K -884 Closed
SKK
118
Shepherd Kaplan Krochuk
Massachusetts
– -$224K -760 Closed
Group One Trading
119
Group One Trading
Illinois
– -$51K -173 Closed
Fifth Third Bancorp
120
Fifth Third Bancorp
Ohio
– -$48K -163 Closed
SF
121
Synovus Financial
Georgia
– -$46K -154 Closed
BJ
122
BlackRock Japan
Japan
– -$25K -86 Closed
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