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 %
Ohio Public Employees Retirement System (OPERS)
101
Ohio Public Employees Retirement System (OPERS)
Ohio
$2M -$92.5K -72 -4%
Royal Bank of Canada
102
Royal Bank of Canada
Ontario, Canada
$1.99M -$4.66M -3,629 -70%
Russell Investments Group
103
Russell Investments Group
United Kingdom
$1.95M +$1.66M +1,294 +573%
BNP Paribas Financial Markets
104
BNP Paribas Financial Markets
France
$1.83M +$606K +472 +49%
KBC Group
105
KBC Group
Belgium
$1.82M +$308K +240 +20%
TMAM
106
Tokio Marine Asset Management
Japan
$1.59M – – –
State of Wisconsin Investment Board
107
State of Wisconsin Investment Board
Wisconsin
$1.57M – – –
VIA
108
Vident Investment Advisory
Georgia
$1.57M +$353K +275 +29%
GGHC
109
Gilder Gagnon Howe & Co
New York
$1.53M -$20.1M -15,677 -93%
PA
110
Profund Advisors
Maryland
$1.49M -$344K -268 -19%
CRC
111
Curi RMB Capital
Illinois
$1.49M -$51.4K -40 -3%
LCM
112
Laurion Capital Management
New York
$1.36M -$8.86M -6,895 -87%
Jane Street
113
Jane Street
New York
$1.35M -$153K -119 -10%
IBT
114
International Biotechnology Trust
United Kingdom
$1.32M – – –
BG
115
Bellevue Group
Switzerland
$1.28M +$149K +116 +13%
TWMP
116
Taylor Wealth Management Partners
Massachusetts
$1.26M -$7.71K -6 -0.6%
AAM
117
Advisors Asset Management
Colorado
$1.2M -$199K -155 -14%
Los Angeles Capital Management
118
Los Angeles Capital Management
California
$1.17M -$1.82M -1,414 -61%
AB
119
Amalgamated Bank
New York
$1.14M +$321K +250 +39%
UR
120
USCA RIA
Texas
$1.09M +$167K +130 +18%
Asset Management One
121
Asset Management One
Japan
$1.07M +$63.1K +50 +6%
URS
122
Utah Retirement Systems
Utah
$1M – – –
AG
123
Aperio Group
California
$960K +$307K +239 +47%
XK
124
Xact Kapitalforvaltning
Sweden
$916K +$60.4K +47 +7%
Public Employees Retirement Association of Colorado
125
Public Employees Retirement Association of Colorado
Colorado
$902K -$2.57K -2 -0.3%
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5
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