BLUE

bluebird bio
BLUE

Overview Fund Activity
Delisted

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

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275 hedge funds and large institutions have $3.41B invested in bluebird bio in 2020 Q3 according to their latest regulatory filings, with 40 funds opening new positions, 100 increasing their positions, 84 reducing their positions, and 42 closing their positions.

New
Increased
Maintained
Reduced
Closed
Holders
275
Holders Change
-3
Holders Change %
-1.08%
% of All Funds
5.56%
Holding in Top 10
1
Holding in Top 10 Change
-3
Holding in Top 10 Change %
-75%
% of All Funds
0.02%
New
40
Increased
100
Reduced
84
Closed
42
Calls
$55.7M
Puts
$54.3M
Net Calls
+$1.4M
Net Calls Change
+$7.91M

Top Buyers

1
Massachusetts Financial Services
Massachusetts Financial Services
Massachusetts
+$18.4M
2
Royal Bank of Canada
Royal Bank of Canada
Ontario, Canada
+$14.2M
3
AC
Armistice Capital
New York
+$12.5M
4
Vanguard Group
Vanguard Group
Pennsylvania
+$12.1M
5
GLA
Great Lakes Advisors
Illinois
+$11.9M

Top Sellers

1
Fidelity Investments
Fidelity Investments
Massachusetts
-$42M
2
T. Rowe Price Associates
T. Rowe Price Associates
Maryland
-$25.7M
3
Adage Capital Partners
Adage Capital Partners
Massachusetts
-$22.9M
4
FCM
Frontier Capital Management
Massachusetts
-$19.8M
5
Alyeska Investment Group
Alyeska Investment Group
Illinois
-$16.7M
Name Holding Trade Value Shares
Change 		Shares
Change %
RhumbLine Advisers
76
RhumbLine Advisers
Massachusetts
$4.26M +$105K +150 +3%
Mirae Asset Global Investments
77
Mirae Asset Global Investments
South Korea
$3.88M +$1.19M +1,686 +44%
PP
78
PDT Partners
New York
$3.85M -$625K -894 -14%
Two Sigma Investments
79
Two Sigma Investments
New York
$3.25M +$3.25M +4,650 New
BC
80
Birchview Capital
Vermont
$3.24M – – –
DA
81
Duality Advisers
Florida
$3.08M +$3.08M +4,401 New
ECG
82
EPIQ Capital Group
California
$2.92M – – –
Legal & General Group
83
Legal & General Group
United Kingdom
$2.78M -$5.59K -8 -0.2%
Los Angeles Capital Management
84
Los Angeles Capital Management
California
$2.75M -$461K -659 -14%
State of New Jersey Common Pension Fund D
85
State of New Jersey Common Pension Fund D
New Jersey
$2.53M +$382K +547 +18%
Ameriprise
86
Ameriprise
Minnesota
$2.5M -$5.1M -7,295 -67%
PAMU
87
Pictet Asset Management (UK)
United Kingdom
$2.45M +$1.59M +2,280 +185%
Fidelity Investments
88
Fidelity Investments
Massachusetts
$2.4M -$42M -60,123 -95%
GC
89
Guggenheim Capital
Illinois
$2.35M -$467K -669 -17%
RCM
90
Ratan Capital Management
Florida
$2.32M +$2.32M +3,320 New
UR
91
USCA RIA
Texas
$2.27M +$442K +632 +24%
Rafferty Asset Management
92
Rafferty Asset Management
New York
$2.2M +$1.4M +1,999 +173%
IC
93
Ikarian Capital
Texas
$2.17M -$3.48M -4,986 -62%
AG
94
Aperio Group
California
$2.11M +$481K +688 +29%
EAM
95
Erste Asset Management
Austria
$1.96M – – –
UBS Group
96
UBS Group
Switzerland
$1.95M +$108K +155 +6%
Invesco
97
Invesco
Georgia
$1.85M -$17.5K -25 -0.9%
SEI Investments
98
SEI Investments
Pennsylvania
$1.8M +$280K +405 +18%
Simplex Trading
99
Simplex Trading
Illinois
$1.74M +$680K +973 +64%
Thrivent Financial for Lutherans
100
Thrivent Financial for Lutherans
Minnesota
$1.63M -$633K -905 -28%
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