BLUE

bluebird bio
BLUE

Overview Fund Activity
Delisted

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

Back to rankings

273 hedge funds and large institutions have $7.92B invested in bluebird bio in 2019 Q2 according to their latest regulatory filings, with 31 funds opening new positions, 106 increasing their positions, 81 reducing their positions, and 42 closing their positions.

New
Increased
Maintained
Reduced
Closed
Holders
273
Holders Change
-15
Holders Change %
-5.21%
% of All Funds
5.94%
Holding in Top 10
1
Holding in Top 10 Change
–
Holding in Top 10 Change %
–
% of All Funds
0.02%
New
31
Increased
106
Reduced
81
Closed
42
Calls
$100M
Puts
$131M
Net Calls
-$31M
Net Calls Change
-$84.9M

Top Buyers

1
Sands Capital Management
Sands Capital Management
Virginia
+$141M
2
Invesco
Invesco
Georgia
+$121M
3
Nuveen Asset Management
Nuveen Asset Management
Illinois
+$53.1M
4
Capital World Investors
Capital World Investors
California
+$48.9M
5
EVM
Eaton Vance Management
Massachusetts
+$26.9M

Top Sellers

1
Vanguard Group
Vanguard Group
Pennsylvania
-$138M
2
MWNA
Marshall Wace North America
New York
-$74.9M
3
Bank of America
Bank of America
North Carolina
-$35.4M
4
EAM
Eventide Asset Management
Massachusetts
-$32.9M
5
Baillie Gifford & Co
Baillie Gifford & Co
United Kingdom
-$32.5M
Name Holding Trade Value Shares
Change 		Shares
Change %
TCM
51
Tekla Capital Management
Massachusetts
$13M +$1.39M +841 +12%
AG
52
Artal Group
Luxembourg
$12.7M – – –
AC
53
Armistice Capital
New York
$12.7M +$4.07M +2,470 +47%
Morgan Stanley
54
Morgan Stanley
New York
$12.2M -$14.6M -8,837 -54%
Kayne Anderson Rudnick Investment Management
55
Kayne Anderson Rudnick Investment Management
California
$12.1M +$529K +321 +5%
PAMU
56
Pictet Asset Management (UK)
United Kingdom
$11.6M -$1.58M -961 -12%
California State Teachers Retirement System (CalSTRS)
57
California State Teachers Retirement System (CalSTRS)
California
$11.1M +$241K +146 +2%
Millennium Management
58
Millennium Management
New York
$10.6M -$6.78M -4,112 -39%
CBT
59
Capital Bank & Trust
California
$10.2M +$3.54M +2,151 +53%
State Board of Administration of Florida Retirement System
60
State Board of Administration of Florida Retirement System
Florida
$10.1M +$896K +544 +10%
BNP Paribas Asset Management
61
BNP Paribas Asset Management
France
$9.92M -$33K -20 -0.3%
SFM
62
Sphera Funds Management
Israel
$9.54M -$1.12M -679 -10%
RPAM
63
Rhenman & Partners Asset Management
Sweden
$8.9M +$1.91M +1,158 +27%
California Public Employees Retirement System
64
California Public Employees Retirement System
California
$8.29M -$180K -109 -2%
Citigroup
65
Citigroup
New York
$7.95M +$5.59M +3,396 +238%
Allianz Asset Management
66
Allianz Asset Management
Germany
$7.93M -$3.24M -1,967 -29%
Principal Financial Group
67
Principal Financial Group
Iowa
$7.47M +$2.14M +1,300 +40%
JPMorgan Chase & Co
68
JPMorgan Chase & Co
New York
$7.21M -$331K -206 -4%
PP
69
Paloma Partners
Connecticut
$6.67M +$4.19M +2,541 +169%
GH
70
GAM Holding
Switzerland
$6.3M – – –
RSCM
71
Rock Springs Capital Management
Maryland
$5.98M +$254K +154 +4%
RhumbLine Advisers
72
RhumbLine Advisers
Massachusetts
$5.95M -$955K -580 -14%
Hudson Bay Capital Management
73
Hudson Bay Capital Management
Connecticut
$5.72M +$3.82M +2,316 +200%
CSS
74
Cubist Systematic Strategies
Connecticut
$5.58M +$5.03M +3,052 +919%
AllianceBernstein
75
AllianceBernstein
Tennessee
$5.54M +$1.2M +727 +28%
1 2
3
4 5