BLUE

bluebird bio
BLUE

Overview Fund Activity
Delisted

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

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174 hedge funds and large institutions have $308M invested in bluebird bio in 2023 Q2 according to their latest regulatory filings, with 27 funds opening new positions, 66 increasing their positions, 41 reducing their positions, and 29 closing their positions.

New
Increased
Maintained
Reduced
Closed
Holders
174
Holders Change
-2
Holders Change %
-1.14%
% of All Funds
2.74%
Holding in Top 10
2
Holding in Top 10 Change
+1
Holding in Top 10 Change %
+100%
% of All Funds
0.03%
New
27
Increased
66
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 Holding Trade Value Shares
Change 		Shares
Change %
Swiss National Bank
51
Swiss National Bank
Switzerland
$762K +$30.9K +470 +4%
SXL
52
Summit X LLC
Missouri
$732K +$101K +1,537 +16%
JF
53
Jump Financial
Illinois
$731K +$652K +9,908 +822%
Squarepoint
54
Squarepoint
New York
$599K -$1.4M -21,300 -70%
Two Sigma Investments
55
Two Sigma Investments
New York
$555K +$555K +8,430 New
RhumbLine Advisers
56
RhumbLine Advisers
Massachusetts
$546K +$5.2K +79 +1%
AllianceBernstein
57
AllianceBernstein
Tennessee
$519K +$194K +2,941 +60%
Ohio Public Employees Retirement System (OPERS)
58
Ohio Public Employees Retirement System (OPERS)
Ohio
$518K +$292K +4,442 +130%
Fidelity Investments
59
Fidelity Investments
Massachusetts
$507K +$148K +2,252 +41%
California State Teachers Retirement System (CalSTRS)
60
California State Teachers Retirement System (CalSTRS)
California
$425K +$1.38K +21 +0.3%
HF
61
HRT Financial
New York
$372K +$372K +5,655 New
GCM
62
Ghisallo Capital Management
Massachusetts
$329K – – –
Russell Investments Group
63
Russell Investments Group
United Kingdom
$326K +$987 +15 +0.3%
New York State Common Retirement Fund
64
New York State Common Retirement Fund
New York
$321K +$214K +3,250 +199%
Los Angeles Capital Management
65
Los Angeles Capital Management
California
$320K +$4.94K +75 +2%
GCM
66
Graham Capital Management
Connecticut
$313K +$313K +4,753 New
VEA
67
Virtus ETF Advisers
New York
$293K +$172K +2,611 +142%
Invesco
68
Invesco
Georgia
$292K +$7.04K +107 +2%
EFM
69
E Fund Management
China
$291K -$11.6K -177 -4%
BC
70
BIT Capital
Germany
$261K +$149K +2,308 +132%
AQR Capital Management
71
AQR Capital Management
Connecticut
$255K -$7.11K -108 -3%
Mitsubishi UFJ Asset Management
72
Mitsubishi UFJ Asset Management
Japan
$241K +$116K +1,766 +93%
BFM
73
Boothbay Fund Management
New York
$238K – – –
PMEF
74
Point72 Middle East FZE
United Arab Emirates
$208K +$208K +3,168 New
HWAM
75
Hennion & Walsh Asset Management
New Jersey
$192K -$138K -2,102 -42%
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