BLUE

bluebird bio
BLUE

Overview Fund Activity
Delisted

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

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157 hedge funds and large institutions have $134M invested in bluebird bio in 2024 Q1 according to their latest regulatory filings, with 24 funds opening new positions, 62 increasing their positions, 41 reducing their positions, and 53 closing their positions.

Holders
157
Holders Change
-30
Holders Change %
-16.04%
% of All Funds
2.28%
Holding in Top 10
–
Holding in Top 10 Change
–
Holding in Top 10 Change %
–
% of All Funds
–
New
24
Increased
62
Reduced
41
Closed
53
Calls
$1.48M
Puts
$2.49M
Net Calls
-$1.01M
Net Calls Change
-$1.18M

Top Buyers

1
BlackRock
1
BlackRock
New York
$19.4M
2
Ameriprise
2
Ameriprise
Minnesota
$8.18M
3
Millennium Management
3
Millennium Management
New York
$7.99M
4
Geode Capital Management
4
Geode Capital Management
Massachusetts
$5.53M
5
Vanguard Group
5
Vanguard Group
Pennsylvania
$13.4M

Top Sellers

1
State Street
1
State Street
Massachusetts
$4.39M
2
Pictet Asset Management
2
Pictet Asset Management
Switzerland
$0
3
Alyeska Investment Group
3
Alyeska Investment Group
Illinois
$1.61M
4
Norges Bank
4
Norges Bank
Norway
$0
5
GCM
5
Ghisallo Capital Management
Massachusetts
$0
Name Market Value Shares Shares
Change 		Shares
Change %
BlackRock
1
BlackRock
New York
$19.4M 15,178,562 +6,195,561 +69%
Vanguard Group
2
Vanguard Group
Pennsylvania
$13.4M 10,498,460 +1,723,081 +20%
GIM
3
Granahan Investment Management
Massachusetts
$9.87M 7,711,669 -366,028 -5%
Ameriprise
4
Ameriprise
Minnesota
$8.18M 6,392,198 +3,636,498 +132%
Millennium Management
5
Millennium Management
New York
$7.99M 6,239,541 +2,825,929 +83%
PAI
6
Palo Alto Investors
California
$5.84M 4,560,171 +1,226,838 +37%
Geode Capital Management
7
Geode Capital Management
Massachusetts
$5.53M 4,318,267 +1,948,583 +82%
State Street
8
State Street
Massachusetts
$4.39M 3,428,135 -10,437,584 -75%
Two Sigma Investments
9
Two Sigma Investments
New York
$3.55M 2,774,042 -136,770 -5%
TCM
10
Tang Capital Management
California
$3.2M 2,500,000 +800,000 +47%
Fidelity Investments
11
Fidelity Investments
Massachusetts
$3.05M 2,380,610 +4,044 +0.2%
Renaissance Technologies
12
Renaissance Technologies
New York
$2.8M 2,187,700 -451,000 -17%
PHS
13
PFM Health Sciences
California
$2.61M 2,042,651 – –
JPMorgan Chase & Co
14
JPMorgan Chase & Co
New York
$2.47M 1,933,076 +177,241 +10%
FLSM
15
Frazier Life Sciences Management
California
$2.19M 1,709,907 – –
Dimensional Fund Advisors
16
Dimensional Fund Advisors
Texas
$2.11M 1,647,546 -1,347,728 -45%
Northern Trust
17
Northern Trust
Illinois
$2.08M 1,621,230 +620,992 +62%
Susquehanna International Group
18
Susquehanna International Group
Pennsylvania
$1.71M 1,333,299 -150,568 -10%
Bank of America
19
Bank of America
North Carolina
$1.66M 1,295,173 -328,635 -20%
Morgan Stanley
20
Morgan Stanley
New York
$1.64M 1,278,854 -1,146,158 -47%
Alyeska Investment Group
21
Alyeska Investment Group
Illinois
$1.61M 1,255,937 -5,656,565 -82%
Hudson Bay Capital Management
22
Hudson Bay Capital Management
Connecticut
$1.51M 1,180,115 -1,003,322 -46%
Two Sigma Advisers
23
Two Sigma Advisers
New York
$1.49M 1,160,800 +792,200 +215%
Mirae Asset Global Investments
24
Mirae Asset Global Investments
South Korea
$1.39M 325,111 +90,139 +38%
BL
25
Bleichroeder LP
New York
$1.33M 1,037,379 -1,462,621 -59%
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