BLUE

bluebird bio
BLUE

Overview Fund Activity
Delisted

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

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81 hedge funds and large institutions have $378M invested in bluebird bio in 2013 Q4 according to their latest regulatory filings, with 26 funds opening new positions, 32 increasing their positions, 16 reducing their positions, and 12 closing their positions.

Holders
81
Holders Change
+14
Holders Change %
+20.9%
% of All Funds
2.35%
Holding in Top 10
2
Holding in Top 10 Change
+2
Holding in Top 10 Change %
%
% of All Funds
0.06%
New
26
Increased
32
Reduced
16
Closed
12
Calls
–
Puts
–
Net Calls
–
Net Calls Change
–

Top Buyers

1
TRV
1
Third Rock Ventures
Massachusetts
$78.9M
2
Fidelity Investments
2
Fidelity Investments
Massachusetts
$74.8M
3
Capital Research Global Investors
3
Capital Research Global Investors
California
$54.8M
4
T. Rowe Price Associates
4
T. Rowe Price Associates
Maryland
$10.1M
5
BFA
5
BlackRock Fund Advisors
California
$9.68M

Top Sellers

1
O
1
OrbiMed
New York
$0
2
Ameriprise
2
Ameriprise
Minnesota
$4.22M
3
PC
3
PointState Capital
New York
$2.1M
4
QF
4
QVT Financial
New York
$0
5
PAM
5
Panagora Asset Management
Massachusetts
$0
Name Market Value Shares Shares
Change 		Shares
Change %
TRV
1
Third Rock Ventures
Massachusetts
$78.9M 3,313,974 +3,313,974 New
Fidelity Investments
2
Fidelity Investments
Massachusetts
$74.8M 3,564,631 +1,997,526 +127%
Capital Research Global Investors
3
Capital Research Global Investors
California
$54.8M 2,612,792 +1,580,792 +153%
WRF
4
Waddell & Reed Financial
Kansas
$23.1M 1,099,300 +198,200 +22%
Jennison Associates
5
Jennison Associates
New York
$17M 809,530 +203,708 +34%
T. Rowe Price Associates
6
T. Rowe Price Associates
Maryland
$10.1M 483,617 +483,617 New
RCM
7
RA Capital Management
Massachusetts
$9.81M 467,418 – –
BFA
8
BlackRock Fund Advisors
California
$9.68M 461,513 +268,926 +140%
DM
9
Deerfield Management
New York
$8.88M 423,224 – –
Franklin Resources
10
Franklin Resources
California
$6.9M 328,832 -10,800 -3%
RIM
11
RS Investment Management
California
$6.33M 301,800 +86,800 +40%
PHS
12
PFM Health Sciences
California
$6.18M 294,326 +96,429 +49%
UBS AM
13
UBS AM
Illinois
$5.05M 240,791 -4,580 -2%
FAM
14
Fred Alger Management
New York
$4.98M 237,465 +237,465 New
CCM
15
Camber Capital Management
Massachusetts
$4.34M 206,900 +56,900 +38%
Ameriprise
16
Ameriprise
Minnesota
$4.22M 201,073 -121,964 -38%
BA
17
BlackRock Advisors
Delaware
$3.47M 165,202 -3,039 -2%
WMSA
18
Weiss Multi-Strategy Advisers
New York
$3.46M 165,000 – –
CI
19
Cowen Inc
New York
$3.33M 158,709 +158,709 New
AG
20
Artal Group
Luxembourg
$3.15M 150,000 – –
Vanguard Group
21
Vanguard Group
Pennsylvania
$2.6M 123,817 +18,889 +18%
BBA
22
Baker Bros. Advisors
New York
$2.4M 114,461 +2,940 +3%
SM
23
Sabby Management
Florida
$2.14M 102,035 +102,035 New
PC
24
PointState Capital
New York
$2.1M 100,000 -100,000 -50%
SCA
25
SAC Capital Advisors
Connecticut
$2.1M 100,000 +100,000 New
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