BLUE

bluebird bio
BLUE

Overview Fund Activity
Delisted

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

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251 hedge funds and large institutions have $6.04B invested in bluebird bio in 2018 Q4 according to their latest regulatory filings, with 37 funds opening new positions, 98 increasing their positions, 76 reducing their positions, and 73 closing their positions.

New
Increased
Maintained
Reduced
Closed
Holders
251
Holders Change
-37
Holders Change %
-12.85%
% of All Funds
5.6%
Holding in Top 10
1
Holding in Top 10 Change
-1
Holding in Top 10 Change %
-50%
% of All Funds
0.02%
New
37
Increased
98
Reduced
76
Closed
73
Calls
$169M
Puts
$88.3M
Net Calls
+$80.8M
Net Calls Change
+$54.9M

Top Buyers

1
Wellington Management Group
Wellington Management Group
Massachusetts
+$300M
2
Capital International Investors
Capital International Investors
California
+$178M
3
Fiera Capital (Canada)
Fiera Capital (Canada)
Quebec, Canada
+$33M
4
Capital World Investors
Capital World Investors
California
+$28.5M
5
Two Sigma Investments
Two Sigma Investments
New York
+$25.3M

Top Sellers

1
T. Rowe Price Associates
T. Rowe Price Associates
Maryland
-$137M
2
RG
Redmile Group
California
-$36.8M
3
Bank of New York Mellon
Bank of New York Mellon
New York
-$35.3M
4
MCM
Masters Capital Management
Georgia
-$30.7M
5
AllianceBernstein
AllianceBernstein
Tennessee
-$27.9M
Name Holding Trade Value Shares
Change 		Shares
Change %
Invesco
51
Invesco
Georgia
$9.96M +$1.09M +848 +12%
TCM
52
Tekla Capital Management
Massachusetts
$9.76M +$1.06M +822 +12%
Swiss National Bank
53
Swiss National Bank
Switzerland
$9.5M +$267K +208 +3%
Wells Fargo
54
Wells Fargo
California
$9.28M +$2.32M +1,808 +33%
UBS Group
55
UBS Group
Switzerland
$9.15M +$4.92M +3,830 +116%
Allianz Asset Management
56
Allianz Asset Management
Germany
$9.08M -$919K -718 -9%
California State Teachers Retirement System (CalSTRS)
57
California State Teachers Retirement System (CalSTRS)
California
$8.52M +$105K +82 +1%
DG
58
Delek Group
Israel
$7.73M +$3.86M +2,924 +100%
Kayne Anderson Rudnick Investment Management
59
Kayne Anderson Rudnick Investment Management
California
$7.68M -$1.13M -877 -13%
PI
60
Putnam Investments
Massachusetts
$7.31M – – –
State Board of Administration of Florida Retirement System
61
State Board of Administration of Florida Retirement System
Florida
$7.21M +$791K +616 +12%
Balyasny Asset Management
62
Balyasny Asset Management
Illinois
$7.07M -$16.3M -12,700 -70%
California Public Employees Retirement System
63
California Public Employees Retirement System
California
$6.72M -$938K -730 -12%
BNP Paribas Asset Management
64
BNP Paribas Asset Management
France
$5.7M -$822K -653 -13%
RhumbLine Advisers
65
RhumbLine Advisers
Massachusetts
$5.53M -$72K -56 -1%
Voloridge Investment Management
66
Voloridge Investment Management
Florida
$5.47M +$5.47M +4,254 New
JPMorgan Chase & Co
67
JPMorgan Chase & Co
New York
$4.98M -$131K -102 -3%
VanEck Associates
68
VanEck Associates
New York
$4.96M -$281K -219 -5%
Citigroup
69
Citigroup
New York
$4.59M -$4.85M -3,772 -51%
RSCM
70
Rock Springs Capital Management
Maryland
$4.46M -$744K -579 -14%
CIS
71
Capital International Sarl
California
$4.44M +$623K +485 +16%
Two Sigma Advisers
72
Two Sigma Advisers
New York
$4.39M +$4.39M +3,412 New
CBT
73
Capital Bank & Trust
California
$4.38M -$13.1M -10,196 -75%
Bank of Montreal
74
Bank of Montreal
Ontario, Canada
$4.17M +$167K +130 +4%
USAA
75
United Services Automobile Association
Texas
$4.09M +$509K +396 +14%
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