BLUE

bluebird bio
BLUE

Overview Fund Activity
Delisted

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

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235 hedge funds and large institutions have $5.86B invested in bluebird bio in 2015 Q2 according to their latest regulatory filings, with 53 funds opening new positions, 71 increasing their positions, 88 reducing their positions, and 24 closing their positions.

New
Increased
Maintained
Reduced
Closed
Holders
235
Holders Change
+25
Holders Change %
+11.9%
% of All Funds
6.34%
Holding in Top 10
8
Holding in Top 10 Change
+4
Holding in Top 10 Change %
+100%
% of All Funds
0.22%
New
53
Increased
71
Reduced
88
Closed
24
Calls
$117M
Puts
$112M
Net Calls
+$4.88M
Net Calls Change
-$22.4M

Top Buyers

1
Baillie Gifford & Co
1
Baillie Gifford & Co
United Kingdom
$623M
2
Vanguard Group
2
Vanguard Group
Pennsylvania
$349M
3
Fidelity Investments
3
Fidelity Investments
Massachusetts
$903M
4
O
4
OrbiMed
New York
$161M
5
Capital Research Global Investors
5
Capital Research Global Investors
California
$738M

Top Sellers

1
Millennium Management
1
Millennium Management
New York
$26.1M
2
BFA
2
BlackRock Fund Advisors
California
$116M
3
DM
3
Deerfield Management
New York
$55M
4
UBS AM
4
UBS AM
Illinois
$44M
5
FCM
5
Frontier Capital Management
Massachusetts
$3.71M
Name Holding Trade Value Shares
Change 		Shares
Change %
Norges Bank
26
Norges Bank
Norway
$40.4M +$17M +7,792 +73%
PC
27
Passport Capital
California
$36.2M +$36.2M +16,621 New
JHIU
28
Janus Henderson Investors US
Colorado
$35.5M +$35.5M +16,285 New
Point72 Asset Management
29
Point72 Asset Management
Connecticut
$34.9M +$34.9M +15,988 New
AG
30
Artal Group
Luxembourg
$33.7M -$25.3M -11,580 -43%
Two Sigma Investments
31
Two Sigma Investments
New York
$32.6M +$31.9M +14,638 +4,863%
Geode Capital Management
32
Geode Capital Management
Massachusetts
$30.5M -$1.87M -857 -6%
Bank of New York Mellon
33
Bank of New York Mellon
New York
$27.3M -$253K -116 -0.9%
FAM
34
Fred Alger Management
New York
$26.7M +$5.52M +2,529 +26%
CS
35
Credit Suisse
Switzerland
$26.4M +$13M +5,944 +97%
Millennium Management
36
Millennium Management
New York
$26.1M -$101M -46,127 -79%
CCI
37
Columbus Circle Investors
$25.8M -$18.5M -8,471 -42%
BBA
38
Baker Bros. Advisors
New York
$25.4M +$761K +349 +3%
TCIM
39
TIAA CREF Investment Management
New York
$25.1M -$1.29M -593 -5%
KCM
40
Kingdon Capital Management
New York
$25M +$17M +7,775 +210%
American Century Companies
41
American Century Companies
Missouri
$21.5M +$18.4M +8,459 +609%
PHS
42
PFM Health Sciences
California
$21.4M -$12.2M -5,602 -36%
Mitsubishi UFJ Trust & Banking
43
Mitsubishi UFJ Trust & Banking
Japan
$20.9M +$98.1K +45 +0.5%
JPMorgan Chase & Co
44
JPMorgan Chase & Co
New York
$20.8M -$3.13M -1,433 -13%
GL
45
GLG LLC
New York
$20M +$12M +5,510 +151%
QF
46
QVT Financial
New York
$19.8M – – –
RCM
47
RA Capital Management
Massachusetts
$18.4M -$15.3M -7,025 -45%
Ameriprise
48
Ameriprise
Minnesota
$18M -$11.8M -5,393 -40%
RI
49
RTW Investments
New York
$17.7M +$842K +386 +5%
Susquehanna International Group
50
Susquehanna International Group
Pennsylvania
$17.6M -$6.12M -2,806 -26%
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