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 %
Tudor Investment Corp
51
Tudor Investment Corp
Connecticut
$537K 176,718 +127,014 +256%
RhumbLine Advisers
52
RhumbLine Advisers
Massachusetts
$506K 166,358 +528 +0.3%
Fidelity Investments
53
Fidelity Investments
Massachusetts
$502K 165,221 +11,082 +7%
SXL
54
Summit X LLC
Missouri
$494K 162,368 -60,077 -27%
AllianceBernstein
55
AllianceBernstein
Tennessee
$479K 157,640 – –
Ohio Public Employees Retirement System (OPERS)
56
Ohio Public Employees Retirement System (OPERS)
Ohio
$478K 157,338 – –
CANY
57
Caxton Associates (New York)
New York
$463K 152,389 +99,464 +188%
UBS AM
58
UBS AM
Illinois
$411K 135,337 +113,432 +518%
HF
59
HRT Financial
New York
$395K 130,097 +17,004 +15%
California State Teachers Retirement System (CalSTRS)
60
California State Teachers Retirement System (CalSTRS)
California
$358K 117,650 -11,515 -9%
Squarepoint
61
Squarepoint
New York
$352K 115,706 -66,350 -36%
New York State Common Retirement Fund
62
New York State Common Retirement Fund
New York
$347K 114,195 +16,603 +17%
Legal & General Group
63
Legal & General Group
United Kingdom
$315K 103,658 -306,899 -75%
Russell Investments Group
64
Russell Investments Group
United Kingdom
$300K 98,578 -580 -0.6%
Invesco
65
Invesco
Georgia
$270K 88,893 +157 +0.2%
PMEF
66
Point72 Middle East FZE
United Arab Emirates
$268K 88,141 +24,789 +39%
BC
67
BIT Capital
Germany
$245K 81,154 – –
VEA
68
Virtus ETF Advisers
New York
$240K 78,827 -10,195 -11%
Mitsubishi UFJ Asset Management
69
Mitsubishi UFJ Asset Management
Japan
$237K 77,996 +4,751 +6%
EFM
70
E Fund Management
China
$204K 66,978 -21,612 -24%
CAPTRUST Financial Advisors
71
CAPTRUST Financial Advisors
North Carolina
$172K 56,469 +7,495 +15%
Mariner
72
Mariner
Kansas
$169K 55,726 +20,074 +56%
MIM
73
MetLife Investment Management
New Jersey
$166K 54,527 – –
Verition Fund Management
74
Verition Fund Management
Connecticut
$163K 53,652 +53,652 New
AIG
75
American International Group
New York
$162K 53,408 +1,898 +4%
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