BLUE

bluebird bio
BLUE

Overview Fund Activity
Delisted

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

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168 hedge funds and large institutions have $272M invested in bluebird bio in 2023 Q3 according to their latest regulatory filings, with 15 funds opening new positions, 56 increasing their positions, 47 reducing their positions, and 21 closing their positions.

Holders
168
Holders Change
-7
Holders Change %
-4%
% of All Funds
2.68%
Holding in Top 10
1
Holding in Top 10 Change
-1
Holding in Top 10 Change %
-50%
% of All Funds
0.02%
New
15
Increased
56
Reduced
47
Closed
21
Calls
$4.45M
Puts
$5.56M
Net Calls
-$1.11M
Net Calls Change
+$732K

Top Buyers

1
Pictet Asset Management
1
Pictet Asset Management
Switzerland
$15.6M
2
Ameriprise
2
Ameriprise
Minnesota
$7M
3
WP
3
Woodline Partners
California
$8.3M
4
CIM
4
Contrarius Investment Management
Jersey
$3.98M
5
BL
5
Bleichroeder LP
New York
$2.74M

Top Sellers

1
State Street
1
State Street
Massachusetts
$38.5M
2
TCM
2
Tang Capital Management
California
$13M
3
PHS
3
PFM Health Sciences
California
$18.4M
4
Walleye Capital
4
Walleye Capital
New York
$0
5
Bank of America
5
Bank of America
North Carolina
$3.7M
Name Market Value Shares Shares
Change 		Shares
Change %
Group One Trading
26
Group One Trading
Illinois
$2.02M 664,722 -131,231 -16%
Barclays
27
Barclays
United Kingdom
$1.91M 627,815 -122,938 -16%
Jane Street
28
Jane Street
New York
$1.85M 607,082 -346,213 -36%
Susquehanna International Group
29
Susquehanna International Group
Pennsylvania
$1.8M 593,346 +80,212 +16%
Wellington Management Group
30
Wellington Management Group
Massachusetts
$1.77M 582,168 +26,573 +5%
Mirae Asset Global Investments
31
Mirae Asset Global Investments
South Korea
$1.74M 570,932 +30,461 +6%
Citigroup
32
Citigroup
New York
$1.7M 557,969 +30,532 +6%
LPC
33
Lion Point Capital
New York
$1.62M 531,256 – –
Renaissance Technologies
34
Renaissance Technologies
New York
$1.44M 474,900 -75,300 -14%
BC
35
Birchview Capital
Vermont
$1.38M 455,200 +206,000 +83%
ECM
36
ExodusPoint Capital Management
New York
$1.29M 423,733 +152,106 +56%
Morgan Stanley
37
Morgan Stanley
New York
$1.28M 420,778 -45,035 -10%
Bank of New York Mellon
38
Bank of New York Mellon
New York
$1.25M 411,466 +6,044 +1%
PAM
39
Panagora Asset Management
Massachusetts
$1.07M 352,614 +11 +0%
Hudson Bay Capital Management
40
Hudson Bay Capital Management
Connecticut
$996K 327,500 +27,500 +9%
Millennium Management
41
Millennium Management
New York
$979K 322,187 +322,187 New
Nuveen Asset Management
42
Nuveen Asset Management
Illinois
$928K 305,308 -2,447 -0.8%
Charles Schwab
43
Charles Schwab
California
$887K 291,701 -353 -0.1%
UBS Group
44
UBS Group
Switzerland
$875K 287,870 -131,317 -31%
Wells Fargo
45
Wells Fargo
California
$859K 282,438 -68,433 -20%
ECM
46
Endurant Capital Management
California
$765K 251,785 -29,656 -11%
Simplex Trading
47
Simplex Trading
Illinois
$762K 250,705 +11,414 +5%
Swiss National Bank
48
Swiss National Bank
Switzerland
$704K 231,600 – –
PA
49
Profund Advisors
Maryland
$658K 216,366 -78,315 -27%
BNP Paribas Financial Markets
50
BNP Paribas Financial Markets
France
$652K 214,502 -115,795 -35%
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