BLUE

bluebird bio
BLUE

Overview Fund Activity
Delisted

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

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262 hedge funds and large institutions have $2.73B invested in bluebird bio in 2020 Q4 according to their latest regulatory filings, with 46 funds opening new positions, 93 increasing their positions, 86 reducing their positions, and 57 closing their positions.

New
Increased
Maintained
Reduced
Closed
Holders
262
Holders Change
-13
Holders Change %
-4.73%
% of All Funds
4.65%
Holding in Top 10
–
Holding in Top 10 Change
-1
Holding in Top 10 Change %
-100%
% of All Funds
–
New
46
Increased
93
Reduced
86
Closed
57
Calls
$45.9M
Puts
$49.1M
Net Calls
-$3.22M
Net Calls Change
-$4.62M

Top Buyers

1
CS
Credit Suisse
Switzerland
+$36.6M
2
State Street
State Street
Massachusetts
+$24.6M
3
Royal Bank of Canada
Royal Bank of Canada
Ontario, Canada
+$18.8M
4
JPMorgan Chase & Co
JPMorgan Chase & Co
New York
+$18.5M
5
SCM
Suvretta Capital Management
New York
+$18.5M

Top Sellers

1
Wellington Management Group
Wellington Management Group
Massachusetts
-$80.6M
2
Baillie Gifford & Co
Baillie Gifford & Co
United Kingdom
-$29.6M
3
TCM
TimesSquare Capital Management
New York
-$26.7M
4
ACA
Anchor Capital Advisors
Massachusetts
-$21.4M
5
GGHC
Gilder Gagnon Howe & Co
New York
-$19.7M
Name Holding Trade Value Shares
Change 		Shares
Change %
Man Group
51
Man Group
United Kingdom
$5.77M -$1.73M -3,094 -23%
SM
52
Senvest Management
New York
$5.61M -$2.98M -5,309 -35%
N
53
Natixis
France
$5.46M +$5.46M +9,740 New
FCM
54
Frontier Capital Management
Massachusetts
$5.39M +$1.8M +3,219 +50%
AA
55
ALPS Advisors
Colorado
$5.18M +$5.18M +9,241 New
Squarepoint
56
Squarepoint
New York
$5.16M +$826K +1,474 +19%
California State Teachers Retirement System (CalSTRS)
57
California State Teachers Retirement System (CalSTRS)
California
$5.07M +$97K +173 +2%
CSS
58
Cubist Systematic Strategies
Connecticut
$5.01M +$3.81M +6,806 +319%
Mirae Asset Global Investments
59
Mirae Asset Global Investments
South Korea
$5.01M +$1.92M +3,429 +62%
Principal Financial Group
60
Principal Financial Group
Iowa
$4.96M +$119K +213 +2%
Deutsche Bank
61
Deutsche Bank
Germany
$4.77M -$9.01M -16,086 -65%
Jane Street
62
Jane Street
New York
$4.68M +$513K +915 +12%
DA
63
Duality Advisers
Florida
$4.11M +$1.64M +2,929 +67%
AIMCA
64
Alberta Investment Management Corp (AIMCo)
Alberta, Canada
$4.11M -$603K -1,075 -13%
State Board of Administration of Florida Retirement System
65
State Board of Administration of Florida Retirement System
Florida
$4.05M -$35.9K -64 -0.9%
PP
66
PDT Partners
New York
$3.7M +$614K +1,096 +20%
Franklin Resources
67
Franklin Resources
California
$3.53M +$42.6K +76 +1%
Millennium Management
68
Millennium Management
New York
$3.51M -$1.05M -1,875 -23%
TC
69
Tarsadia Capital
New York
$3.49M – – –
Group One Trading
70
Group One Trading
Illinois
$3.49M +$2.56M +4,561 +275%
RhumbLine Advisers
71
RhumbLine Advisers
Massachusetts
$3.24M -$174K -310 -5%
Citadel Advisors
72
Citadel Advisors
Florida
$3.19M -$8.7M -15,525 -73%
Citigroup
73
Citigroup
New York
$3.09M -$816K -1,457 -21%
Arrowstreet Capital
74
Arrowstreet Capital
Massachusetts
$3.02M +$3.02M +5,381 New
Qube Research & Technologies (QRT)
75
Qube Research & Technologies (QRT)
United Kingdom
$2.92M +$2.03M +3,629 +230%
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