BLUE

bluebird bio
BLUE

Overview Fund Activity
Delisted

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

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275 hedge funds and large institutions have $3.41B invested in bluebird bio in 2020 Q3 according to their latest regulatory filings, with 40 funds opening new positions, 100 increasing their positions, 84 reducing their positions, and 42 closing their positions.

New
Increased
Maintained
Reduced
Closed
Holders
275
Holders Change
-3
Holders Change %
-1.08%
% of All Funds
5.56%
Holding in Top 10
1
Holding in Top 10 Change
-3
Holding in Top 10 Change %
-75%
% of All Funds
0.02%
New
40
Increased
100
Reduced
84
Closed
42
Calls
$55.7M
Puts
$54.3M
Net Calls
+$1.4M
Net Calls Change
+$7.91M

Top Buyers

1
Massachusetts Financial Services
Massachusetts Financial Services
Massachusetts
+$18.4M
2
Royal Bank of Canada
Royal Bank of Canada
Ontario, Canada
+$14.2M
3
AC
Armistice Capital
New York
+$12.5M
4
Vanguard Group
Vanguard Group
Pennsylvania
+$12.1M
5
GLA
Great Lakes Advisors
Illinois
+$11.9M

Top Sellers

1
Fidelity Investments
Fidelity Investments
Massachusetts
-$42M
2
T. Rowe Price Associates
T. Rowe Price Associates
Maryland
-$25.7M
3
Adage Capital Partners
Adage Capital Partners
Massachusetts
-$22.9M
4
FCM
Frontier Capital Management
Massachusetts
-$19.8M
5
Alyeska Investment Group
Alyeska Investment Group
Illinois
-$16.7M
Name Holding Trade Value Shares
Change 		Shares
Change %
American Century Companies
51
American Century Companies
Missouri
$9.51M +$9.09K +13 +0.1%
Man Group
52
Man Group
United Kingdom
$9.36M +$4.9M +7,015 +110%
Axa
53
Axa
France
$8.9M +$1.69M +2,423 +23%
Swiss National Bank
54
Swiss National Bank
Switzerland
$7.92M +$119K +170 +2%
KBC Group
55
KBC Group
Belgium
$7.86M +$3.64M +5,214 +87%
Susquehanna International Group
56
Susquehanna International Group
Pennsylvania
$7.57M -$437K -626 -5%
California Public Employees Retirement System
57
California Public Employees Retirement System
California
$7.45M +$350K +501 +5%
PPA
58
Parametric Portfolio Associates
Washington
$6.84M +$2.86M +4,099 +72%
California State Teachers Retirement System (CalSTRS)
59
California State Teachers Retirement System (CalSTRS)
California
$6.2M +$255K +365 +4%
Principal Financial Group
60
Principal Financial Group
Iowa
$6.04M -$42.6K -61 -0.7%
AIMCA
61
Alberta Investment Management Corp (AIMCo)
Alberta, Canada
$5.87M – – –
RPAM
62
Rhenman & Partners Asset Management
Sweden
$5.82M – – –
Squarepoint
63
Squarepoint
New York
$5.4M +$3.63M +5,199 +206%
Jane Street
64
Jane Street
New York
$5.19M +$1.82M +2,610 +54%
GIM
65
Granahan Investment Management
Massachusetts
$5.12M -$602K -861 -11%
State Board of Administration of Florida Retirement System
66
State Board of Administration of Florida Retirement System
Florida
$5.1M +$528K +755 +12%
Balyasny Asset Management
67
Balyasny Asset Management
Illinois
$4.96M +$4.96M +7,103 New
Citigroup
68
Citigroup
New York
$4.87M -$49.6K -71 -1%
Barclays
69
Barclays
United Kingdom
$4.62M -$1.06M -1,514 -19%
TCM
70
Tekla Capital Management
Massachusetts
$4.54M – – –
AllianceBernstein
71
AllianceBernstein
Tennessee
$4.49M +$2.77M +3,960 +161%
FCM
72
Frontier Capital Management
Massachusetts
$4.47M -$19.8M -28,328 -82%
TC
73
Tarsadia Capital
New York
$4.36M – – –
Franklin Resources
74
Franklin Resources
California
$4.35M +$9.78K +14 +0.2%
PCM
75
Peregrine Capital Management
Minnesota
$4.26M -$406K -581 -9%
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