BLUE

bluebird bio
BLUE

Overview Fund Activity
Delisted

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

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229 hedge funds and large institutions have $1.59B invested in bluebird bio in 2021 Q1 according to their latest regulatory filings, with 48 funds opening new positions, 85 increasing their positions, 64 reducing their positions, and 78 closing their positions.

New
Increased
Maintained
Reduced
Closed
Holders
229
Holders Change
-33
Holders Change %
-12.6%
% of All Funds
4.03%
Holding in Top 10
1
Holding in Top 10 Change
+1
Holding in Top 10 Change %
%
% of All Funds
0.02%
New
48
Increased
85
Reduced
64
Closed
78
Calls
$25.8M
Puts
$45.8M
Net Calls
-$20M
Net Calls Change
-$16.8M

Top Buyers

1
Wellington Management Group
Wellington Management Group
Massachusetts
$209M
2
AC
Armistice Capital
New York
$59.2M
3
SCM
Suvretta Capital Management
New York
$39.3M
4
SC
Sessa Capital
New York
$26.4M
5
CS
Credit Suisse
Switzerland
$70M

Top Sellers

1
Capital Research Global Investors
Capital Research Global Investors
California
$0
2
Sands Capital Management
Sands Capital Management
Virginia
$0
3
Capital World Investors
Capital World Investors
California
$0
4
Capital International Investors
Capital International Investors
California
$0
5
CC
Casdin Capital
New York
$0
Name Holding Trade Value Shares
Change 		Shares
Change %
D.E. Shaw & Co
51
D.E. Shaw & Co
New York
$4.38M -$1.31M -3,350 -23%
Squarepoint
52
Squarepoint
New York
$4.08M +$484K +1,240 +13%
Swedbank
53
Swedbank
Sweden
$4.07M +$4.07M +10,422 New
California Public Employees Retirement System
54
California Public Employees Retirement System
California
$4.06M -$602K -1,542 -13%
E
55
Ergoteles
New York
$3.88M +$3.88M +9,945 New
AA
56
ALPS Advisors
Colorado
$3.62M +$11.3K +29 +0.3%
California State Teachers Retirement System (CalSTRS)
57
California State Teachers Retirement System (CalSTRS)
California
$3.51M -$18.7K -48 -0.5%
TC
58
Tarsadia Capital
New York
$3.02M +$581K +1,487 +24%
State Board of Administration of Florida Retirement System
59
State Board of Administration of Florida Retirement System
Florida
$2.79M -$32.8K -84 -1%
PPA
60
Parametric Portfolio Associates
Washington
$2.76M -$2.73M -6,990 -50%
UBS AM
61
UBS AM
Illinois
$2.74M -$11.9M -30,527 -81%
GCP
62
GSA Capital Partners
United Kingdom
$2.71M +$2.71M +6,948 New
KCM
63
Kennedy Capital Management
Missouri
$2.58M +$2.58M +6,613 New
Invesco
64
Invesco
Georgia
$2.55M +$876K +2,242 +52%
Simplex Trading
65
Simplex Trading
Illinois
$2.47M +$852K +2,183 +53%
Schroder Investment Management Group
66
Schroder Investment Management Group
United Kingdom
$2.32M +$2.32M +5,953 New
PAMU
67
Pictet Asset Management (UK)
United Kingdom
$2.3M +$1.03M +2,626 +80%
BC
68
Birchview Capital
Vermont
$2.28M +$407K +1,043 +22%
CM
69
Caption Management
Oklahoma
$2.18M +$1.7M +4,351 +352%
RhumbLine Advisers
70
RhumbLine Advisers
Massachusetts
$2.17M -$91.8K -235 -4%
UBS Group
71
UBS Group
Switzerland
$2.14M +$1.28M +3,290 +150%
New York State Common Retirement Fund
72
New York State Common Retirement Fund
New York
$2.13M -$3.21M -8,209 -60%
Two Sigma Advisers
73
Two Sigma Advisers
New York
$2.07M -$3.25M -8,330 -61%
BAM
74
Bullseye Asset Management
Colorado
$2.05M +$1.06M +2,704 +107%
Canada Pension Plan Investment Board
75
Canada Pension Plan Investment Board
Ontario, Canada
$1.88M +$55.1K +141 +3%
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