BLUE

bluebird bio
BLUE

Overview Fund Activity
Delisted

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

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186 hedge funds and large institutions have $182M invested in bluebird bio in 2023 Q4 according to their latest regulatory filings, with 54 funds opening new positions, 63 increasing their positions, 39 reducing their positions, and 32 closing their positions.

New
Increased
Maintained
Reduced
Closed
Holders
186
Holders Change
+19
Holders Change %
+11.38%
% of All Funds
2.73%
Holding in Top 10
–
Holding in Top 10 Change
-1
Holding in Top 10 Change %
-100%
% of All Funds
–
New
54
Increased
63
Reduced
39
Closed
32
Calls
$5.42M
Puts
$5.25M
Net Calls
+$166K
Net Calls Change
+$1.28M

Top Buyers

1
Alyeska Investment Group
1
Alyeska Investment Group
Illinois
$9.54M
2
Norges Bank
2
Norges Bank
Norway
$5.51M
3
PAI
3
Palo Alto Investors
California
$4.6M
4
Vanguard Group
4
Vanguard Group
Pennsylvania
$12.1M
5
GCM
5
Ghisallo Capital Management
Massachusetts
$4.35M

Top Sellers

1
BBA
1
Baker Bros. Advisors
New York
$0
2
PHS
2
PFM Health Sciences
California
$2.82M
3
TCM
3
Tang Capital Management
California
$2.35M
4
WP
4
Woodline Partners
California
$690K
5
CS
5
Credit Suisse
Switzerland
$97.5K
Name Holding Trade Value Shares
Change 		Shares
Change %
VEA
76
Virtus ETF Advisers
New York
$136K +$27.6K +1,001 +25%
Invesco
77
Invesco
Georgia
$131K +$8.72K +316 +7%
CSS
78
Cubist Systematic Strategies
Connecticut
$128K +$128K +4,654 New
PI
79
Pennant Investors
New Jersey
$121K +$121K +4,370 New
CAPTRUST Financial Advisors
80
CAPTRUST Financial Advisors
North Carolina
$120K +$41.6K +1,507 +53%
Russell Investments Group
81
Russell Investments Group
United Kingdom
$117K -$19.3K -699 -14%
CS
82
Credit Suisse
Switzerland
$97.5K -$2.37M -85,702 -96%
EFM
83
E Fund Management
China
$96.7K +$4.25K +154 +5%
Mitsubishi UFJ Asset Management
84
Mitsubishi UFJ Asset Management
Japan
$87.9K -$19K -692 -18%
Cerity Partners
85
Cerity Partners
New York
$82.3K +$82.3K +2,981 New
Mariner
86
Mariner
Kansas
$79.7K +$2.82K +102 +4%
MIM
87
MetLife Investment Management
New Jersey
$75.2K – – –
AIG
88
American International Group
New York
$73.4K -$276 -10 -0.4%
Osaic Holdings
89
Osaic Holdings
Arizona
$70.1K +$21.9K +795 +46%
Wells Fargo
90
Wells Fargo
California
$69.1K -$321K -11,618 -82%
SRL
91
Scientech Research LLC
New Jersey
$68.8K +$68.8K +2,492 New
SPA
92
Sherbrooke Park Advisers
New York
$64.3K +$64.3K +2,330 New
Wolverine Trading
93
Wolverine Trading
Illinois
$62.6K +$27.9K +1,010 +80%
TRCT
94
Tower Research Capital (TRC)
New York
$61.9K +$32.3K +1,169 +109%
VOYA Investment Management
95
VOYA Investment Management
Georgia
$59.6K -$525 -19 -0.9%
Manulife (Manufacturers Life Insurance)
96
Manulife (Manufacturers Life Insurance)
Ontario, Canada
$59.4K – – –
DAS
97
Dynamic Advisor Solutions
Arizona
$53.7K +$53.7K +1,892 New
HKAM
98
Horizon Kinetics Asset Management
New York
$50.3K -$2.13K -77 -4%
Royal Bank of Canada
99
Royal Bank of Canada
Ontario, Canada
$50K +$14K +505 +39%
Balyasny Asset Management
100
Balyasny Asset Management
Illinois
$47.1K +$47.1K +1,707 New
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