BLUE

bluebird bio
BLUE

Overview Fund Activity
Delisted

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

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210 hedge funds and large institutions have $3.8B invested in bluebird bio in 2015 Q1 according to their latest regulatory filings, with 59 funds opening new positions, 71 increasing their positions, 68 reducing their positions, and 18 closing their positions.

Holders
210
Holders Change
+41
Holders Change %
+24.26%
% of All Funds
5.6%
Holding in Top 10
4
Holding in Top 10 Change
-3
Holding in Top 10 Change %
-42.86%
% of All Funds
0.11%
New
59
Increased
71
Reduced
68
Closed
18
Calls
$97.3M
Puts
$70M
Net Calls
+$27.3M
Net Calls Change
-$1.56M

Top Buyers

1
Baillie Gifford & Co
1
Baillie Gifford & Co
United Kingdom
$155M
2
Vanguard Group
2
Vanguard Group
Pennsylvania
$167M
3
O
3
OrbiMed
New York
$66.5M
4
Capital World Investors
4
Capital World Investors
California
$164M
5
T. Rowe Price Associates
5
T. Rowe Price Associates
Maryland
$232M

Top Sellers

1
TRV
1
Third Rock Ventures
Massachusetts
$0
2
RCM
2
RA Capital Management
Massachusetts
$24.2M
3
FCM
3
Frontier Capital Management
Massachusetts
$30.2M
4
DM
4
Deerfield Management
New York
$76.2M
5
PHS
5
PFM Health Sciences
California
$24.1M
Name Holding Trade Value Shares
Change 		Shares
Change %
Bank of America
76
Bank of America
North Carolina
$5.49M +$508K +325 +10%
California State Teachers Retirement System (CalSTRS)
77
California State Teachers Retirement System (CalSTRS)
California
$5.47M +$568K +363 +12%
Wellington Management Group
78
Wellington Management Group
Massachusetts
$5.39M -$6.41M -4,094 -54%
EI
79
EAM Investors
California
$5.28M -$2.16M -1,380 -29%
TRSOTSOK
80
Teachers Retirement System of the State of Kentucky
Kentucky
$5.21M -$665K -425 -11%
TD Asset Management
81
TD Asset Management
Ontario, Canada
$5.21M +$917K +586 +21%
GGHC
82
Gilder Gagnon Howe & Co
New York
$5.04M +$4.39M +2,805 +669%
NIP
83
Nicholas Investment Partners
California
$4.83M +$2.45M +1,567 +103%
AllianceBernstein
84
AllianceBernstein
Tennessee
$4.71M +$463K +296 +11%
TWMP
85
Taylor Wealth Management Partners
Massachusetts
$4.71M +$4.71M +3,008 New
CCM
86
Cadence Capital Management
Massachusetts
$4.54M -$2.9M -1,855 -39%
UBS Group
87
UBS Group
Switzerland
$4.14M -$5.3M -3,387 -56%
Dimensional Fund Advisors
88
Dimensional Fund Advisors
Texas
$3.93M +$3.93M +2,509 New
ProShare Advisors
89
ProShare Advisors
Maryland
$3.75M +$874K +559 +30%
CWM
90
Cabot Wealth Management
Massachusetts
$3.71M +$185K +118 +5%
Swiss National Bank
91
Swiss National Bank
Switzerland
$3.71M – – –
GTC
92
Ghost Tree Capital
New York
$3.62M – – –
D.E. Shaw & Co
93
D.E. Shaw & Co
New York
$3.43M +$724K +463 +27%
PAM
94
Paradigm Asset Management
New York
$3.22M +$3.22M +2,061 New
California Public Employees Retirement System
95
California Public Employees Retirement System
California
$3.21M – – –
RhumbLine Advisers
96
RhumbLine Advisers
Massachusetts
$3.15M +$935K +598 +42%
Morgan Stanley
97
Morgan Stanley
New York
$3.12M -$1.43M -912 -31%
RSCM
98
Rock Springs Capital Management
Maryland
$3.02M – – –
RFC
99
Russell Frank Company
Washington
$2.99M -$2.14M -1,368 -42%
TAM
100
Tocqueville Asset Management
New York
$2.88M +$950K +607 +49%
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4
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