BLUE

bluebird bio
BLUE

Overview Fund Activity
Delisted

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

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175 hedge funds and large institutions have $308M invested in bluebird bio in 2023 Q2 according to their latest regulatory filings, with 26 funds opening new positions, 67 increasing their positions, 41 reducing their positions, and 29 closing their positions.

Holders
175
Holders Change
-3
Holders Change %
-1.69%
% of All Funds
2.76%
Holding in Top 10
2
Holding in Top 10 Change
+1
Holding in Top 10 Change %
+100%
% of All Funds
0.03%
New
26
Increased
67
Reduced
41
Closed
29
Calls
$3.89M
Puts
$5.74M
Net Calls
-$1.85M
Net Calls Change
-$1.36M

Top Buyers

1
GIM
1
Granahan Investment Management
Massachusetts
$16M
2
PHS
2
PFM Health Sciences
California
$24M
3
PAMS
3
Pictet Asset Management (Switzerland)
Switzerland
$15.4M
4
Walleye Capital
4
Walleye Capital
New York
$2.75M
5
Jacobs Levy Equity Management
5
Jacobs Levy Equity Management
New Jersey
$6.88M

Top Sellers

1
TCM
1
Tang Capital Management
California
$24.3M
2
DM
2
Deerfield Management
New York
$0
3
Citadel Advisors
3
Citadel Advisors
Florida
$1.44M
4
Millennium Management
4
Millennium Management
New York
$0
5
State Street
5
State Street
Massachusetts
$53.8M
Name Market Value Shares Shares
Change 		Shares
Change %
MAM
101
Martingale Asset Management
Massachusetts
$92K 27,967 – –
Osaic Holdings
102
Osaic Holdings
Arizona
$91.6K 27,847 -1,384 -5%
RJFSA
103
Raymond James Financial Services Advisors
Florida
$89.8K 27,309 -400 -1%
QOP
104
Quinn Opportunity Partners
Virginia
$87.6K 26,624 -17,500 -40%
BJL
105
Brighton Jones LLC
Washington
$81.3K 24,710 -2,849 -10%
SIG
106
Sargent Investment Group
Maryland
$80K 24,324 +24,324 New
Franklin Resources
107
Franklin Resources
California
$79.8K 24,268 +33 +0.1%
TRCT
108
Tower Research Capital (TRC)
New York
$76.2K 23,160 +3,104 +15%
Daiwa Securities Group
109
Daiwa Securities Group
Japan
$76K 23,084 +13,726 +147%
Walleye Trading
110
Walleye Trading
New York
$74.3K 22,585 +18,188 +414%
UBS AM
111
UBS AM
Illinois
$69.7K 21,905 – –
ProShare Advisors
112
ProShare Advisors
Maryland
$68.4K 20,804 +1,539 +8%
HIC
113
Holderness Investments Company
North Carolina
$67.9K 20,649 +150 +0.7%
AAM
114
Advisors Asset Management
Colorado
$66.4K 20,176 -525 -3%
Marshall Wace
115
Marshall Wace
United Kingdom
$64.8K 19,700 +19,700 New
Prudential Financial
116
Prudential Financial
New Jersey
$64.5K 19,600 -11,100 -36%
Royal Bank of Canada
117
Royal Bank of Canada
Ontario, Canada
$64K 19,263 +1,311 +7%
Wolverine Trading
118
Wolverine Trading
Illinois
$63K 19,575 -3,942 -17%
Fiera Capital (Canada)
119
Fiera Capital (Canada)
Quebec, Canada
$61.9K 18,827 – –
Zurich Cantonal Bank
120
Zurich Cantonal Bank
Switzerland
$54.9K 16,685 -744 -4%
GF
121
Gabelli Funds
New York
$52.6K 16,000 – –
DT
122
Diversified Trust
Tennessee
$50K 15,208 -361 -2%
FT
123
Fiduciary Trust
Massachusetts
$49.7K 15,102 – –
RJA
124
Raymond James & Associates
Florida
$46.4K 14,117 -142 -1%
CW
125
Channel Wealth
California
$41.1K 12,500 +12,500 New
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5
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