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 %
AL
76
Airain Ltd
Guernsey
$240K +$240K +481 New
Citadel Advisors
77
Citadel Advisors
Florida
$239K +$239K +477 New
Barclays
78
Barclays
United Kingdom
$236K +$73.6K +150 +45%
Bank of Montreal
79
Bank of Montreal
Ontario, Canada
$231K +$231K +463 New
TDC
80
Thompson Davis & Co
Virginia
$216K +$216K +433 New
VKH
81
Virtu KCG Holdings
New York
$214K +$214K +429 New
Wells Fargo
82
Wells Fargo
California
$209K +$2.51K +5 +1%
GGHC
83
Gilder Gagnon Howe & Co
New York
$169K +$169K +337 New
MAA
84
Managed Account Advisors
New Jersey
$136K -$117K -233 -46%
ACH
85
ArrowMark Colorado Holdings
Colorado
$96K +$96K +193 New
QT
86
Quantbot Technologies
New York
$80K +$80K +162 New
U
87
UBS
Switzerland
$77K +$43.7K +88 +131%
VFA
88
Virtus Fund Advisers
Connecticut
$63K +$63K +126 New
FMT
89
First Mercantile Trust
Tennessee
$61K +$61K +122 New
Citigroup
90
Citigroup
New York
$45K -$127K -254 -74%
PNC Financial Services Group
91
PNC Financial Services Group
Pennsylvania
$26K +$26K +54 New
BPBT
92
Boston Private Bank & Trust
Massachusetts
$23K +$23K +46 New
Teacher Retirement System of Texas
93
Teacher Retirement System of Texas
Texas
$22K – – –
Ameriprise
94
Ameriprise
Minnesota
$22K +$19K +38 +633%
BlackRock
95
BlackRock
New York
$17K +$8.74K +18 +106%
TRCT
96
Tower Research Capital (TRC)
New York
$12K -$13K -26 -52%
ClearBridge Investments
97
ClearBridge Investments
New York
$12K +$480 +1 +4%
NFG
98
Next Financial Group
Texas
$7K +$7K +15 New
BNP Paribas Financial Markets
99
BNP Paribas Financial Markets
France
$6.52K +$5.01K +10 +333%
GSC
100
Ground Swell Capital
South Carolina
$5K +$5K +10 New
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4
5