BLUE

bluebird bio
BLUE

Overview Fund Activity
Delisted

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

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199 hedge funds and large institutions have $2.88B invested in bluebird bio in 2016 Q4 according to their latest regulatory filings, with 31 funds opening new positions, 90 increasing their positions, 58 reducing their positions, and 30 closing their positions.

New
Increased
Maintained
Reduced
Closed
Holders
199
Holders Change
-1
Holders Change %
-0.5%
% of All Funds
4.98%
Holding in Top 10
3
Holding in Top 10 Change
+2
Holding in Top 10 Change %
+200%
% of All Funds
0.08%
New
31
Increased
90
Reduced
58
Closed
30
Calls
$50.2M
Puts
$44M
Net Calls
+$6.24M
Net Calls Change
+$12.3M

Top Buyers

1
Wellington Management Group
1
Wellington Management Group
Massachusetts
$188M
2
Capital Research Global Investors
2
Capital Research Global Investors
California
$291M
3
Fidelity Investments
3
Fidelity Investments
Massachusetts
$376M
4
Vanguard Group
4
Vanguard Group
Pennsylvania
$190M
5
BFA
5
BlackRock Fund Advisors
California
$112M

Top Sellers

1
O
1
OrbiMed
New York
$17.5M
2
Millennium Management
2
Millennium Management
New York
$0
3
PC
3
Passport Capital
California
$0
4
Franklin Resources
4
Franklin Resources
California
$57.1M
5
EA
5
Emerald Advisers
Pennsylvania
$10.2M
Name Holding Trade Value Shares
Change 		Shares
Change %
FAM
76
Fred Alger Management
New York
$2.82M +$172K +215 +6%
TAM
77
Tocqueville Asset Management
New York
$2.64M +$342K +428 +15%
CC
78
CQS Cayman
Cayman Islands
$2.53M – – –
AC
79
Armistice Capital
New York
$2.47M +$2.47M +3,088 New
VanEck Associates
80
VanEck Associates
New York
$2.44M -$217K -272 -8%
TWMP
81
Taylor Wealth Management Partners
Massachusetts
$2.41M +$877K +1,097 +57%
AA
82
ALPS Advisors
Colorado
$2.21M -$711K -890 -24%
USAA
83
United Services Automobile Association
Texas
$2.1M +$52.7K +66 +3%
WBC
84
Westpac Banking Corp
Australia
$2.02M -$199K -235 -9%
ProShare Advisors
85
ProShare Advisors
Maryland
$1.96M +$225K +281 +13%
GH
86
GAM Holding
Switzerland
$1.91M +$401K +501 +27%
TRSOTSOK
87
Teachers Retirement System of the State of Kentucky
Kentucky
$1.87M +$1.87M +2,338 New
GTC
88
Ghost Tree Capital
New York
$1.85M -$1.85M -2,316 -50%
Federated Hermes
89
Federated Hermes
Pennsylvania
$1.85M +$1.11M +1,390 +150%
BG
90
BlackRock Group
United Kingdom
$1.8M -$3.01M -3,766 -63%
BG
91
Bellevue Group
Switzerland
$1.79M – – –
MLICM
92
Metropolitan Life Insurance Company (MetLife)
New York
$1.76M +$125K +156 +8%
RSCM
93
Rock Springs Capital Management
Maryland
$1.76M +$524K +656 +42%
TAM
94
Tiverton Asset Management
Delaware
$1.7M – – –
Manulife (Manufacturers Life Insurance)
95
Manulife (Manufacturers Life Insurance)
Ontario, Canada
$1.66M +$105K +131 +7%
Nuveen Asset Management
96
Nuveen Asset Management
Illinois
$1.57M -$44K -55 -3%
DCM
97
Driehaus Capital Management
Illinois
$1.54M +$1.54M +1,929 New
AR
98
Advisory Research
Illinois
$1.5M +$1.5M +1,882 New
VKH
99
Virtu KCG Holdings
New York
$1.5M +$1.31M +1,640 +707%
Russell Investments Group
100
Russell Investments Group
United Kingdom
$1.48M +$1.48M +1,837 New
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4
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