BLUE

bluebird bio
BLUE

Overview Fund Activity
Delisted

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

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303 hedge funds and large institutions have $9B invested in bluebird bio in 2018 Q1 according to their latest regulatory filings, with 56 funds opening new positions, 93 increasing their positions, 113 reducing their positions, and 44 closing their positions.

New
Increased
Maintained
Reduced
Closed
Holders
303
Holders Change
+7
Holders Change %
+2.36%
% of All Funds
6.95%
Holding in Top 10
2
Holding in Top 10 Change
-1
Holding in Top 10 Change %
-33.33%
% of All Funds
0.05%
New
56
Increased
93
Reduced
113
Closed
44
Calls
$185M
Puts
$168M
Net Calls
+$17.5M
Net Calls Change
-$69.5M

Top Buyers

1
Capital International Investors
Capital International Investors
California
+$174M
2
Goldman Sachs
Goldman Sachs
New York
+$64.5M
3
Capital World Investors
Capital World Investors
California
+$56.9M
4
CGT
Capital Guardian Trust
California
+$49.9M
5
First Trust Advisors
First Trust Advisors
Illinois
+$46.7M

Top Sellers

1
Wellington Management Group
Wellington Management Group
Massachusetts
-$52.9M
2
Franklin Resources
Franklin Resources
California
-$52.1M
3
1832 Asset Management
1832 Asset Management
Ontario, Canada
-$51M
4
MWNA
Marshall Wace North America
New York
-$47.3M
5
ACH
ArrowMark Colorado Holdings
Colorado
-$39.5M
Name Holding Trade Value Shares
Change 		Shares
Change %
Lord, Abbett & Co
26
Lord, Abbett & Co
New Jersey
$49.3M -$11.7M -5,305 -19%
TA
27
Teachers Advisors
New York
$48.9M -$358K -162 -0.7%
AllianceBernstein
28
AllianceBernstein
Tennessee
$48.5M +$32.8M +14,810 +208%
EAM
29
Eventide Asset Management
Massachusetts
$47.4M – – –
Ameriprise
30
Ameriprise
Minnesota
$46.7M -$13.9M -6,287 -23%
RG
31
Redmile Group
California
$45.6M +$1.25M +563 +3%
CS
32
Credit Suisse
Switzerland
$45.3M +$18.1M +8,205 +67%
Two Sigma Advisers
33
Two Sigma Advisers
New York
$42.9M -$36.1M -16,312 -46%
TCIM
34
TIAA CREF Investment Management
New York
$39.8M -$1.3M -586 -3%
EAM
35
Eagle Asset Management
Florida
$39.3M -$389K -176 -1%
Balyasny Asset Management
36
Balyasny Asset Management
Illinois
$36.7M +$2.48M +1,120 +7%
BBA
37
Baker Bros. Advisors
New York
$34.2M – – –
MCM
38
Masters Capital Management
Georgia
$34.2M +$12.8M +5,790 +60%
AIM
39
ARK Investment Management
Florida
$33.7M +$13M +5,862 +63%
VOYA Investment Management
40
VOYA Investment Management
Georgia
$33.4M -$1.73M -781 -5%
American Century Companies
41
American Century Companies
Missouri
$33M -$6.96M -3,148 -17%
CBT
42
Capital Bank & Trust
California
$29.5M +$29.5M +13,330 New
Mitsubishi UFJ Trust & Banking
43
Mitsubishi UFJ Trust & Banking
Japan
$27.6M -$1.28M -578 -4%
PAMU
44
Pictet Asset Management (UK)
United Kingdom
$27.2M -$883K -399 -3%
Invesco
45
Invesco
Georgia
$26.9M +$3M +1,356 +13%
PI
46
Putnam Investments
Massachusetts
$26.7M +$26.7M +12,064 New
GGHC
47
Gilder Gagnon Howe & Co
New York
$26.1M +$24.9M +11,272 +2,123%
AG
48
Artal Group
Luxembourg
$25.6M – – –
CC
49
Casdin Capital
New York
$24.8M – – –
Dimensional Fund Advisors
50
Dimensional Fund Advisors
Texas
$24.7M -$230K -104 -0.9%
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