BLUE

bluebird bio
BLUE

Overview Fund Activity
Delisted

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

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178 hedge funds and large institutions have $309M invested in bluebird bio in 2023 Q1 according to their latest regulatory filings, with 24 funds opening new positions, 70 increasing their positions, 42 reducing their positions, and 30 closing their positions.

Holders
178
Holders Change
-6
Holders Change %
-3.26%
% of All Funds
2.85%
Holding in Top 10
1
Holding in Top 10 Change
–
Holding in Top 10 Change %
–
% of All Funds
0.02%
New
24
Increased
70
Reduced
42
Closed
30
Calls
$3.48M
Puts
$3.97M
Net Calls
-$489K
Net Calls Change
-$4.06M

Top Buyers

1
TCM
1
Tang Capital Management
California
$31.4M
2
State Street
2
State Street
Massachusetts
$56.5M
3
PHS
3
PFM Health Sciences
California
$14.6M
4
DM
4
Deerfield Management
New York
$6.92M
5
PAMS
5
Pictet Asset Management (Switzerland)
Switzerland
$9.87M

Top Sellers

1
Adage Capital Partners
1
Adage Capital Partners
Massachusetts
$0
2
Nuveen Asset Management
2
Nuveen Asset Management
Illinois
$936K
3
HF
3
HRT Financial
New York
$0
4
Invesco
4
Invesco
Georgia
$275K
5
WP
5
Woodline Partners
California
$2.51M
Name Market Value Shares Shares
Change 		Shares
Change %
State Street
1
State Street
Massachusetts
$56.5M 17,765,546 +5,006,075 +39%
TCM
2
Tang Capital Management
California
$31.4M 9,882,827 +5,247,299 +113%
BlackRock
3
BlackRock
New York
$28.4M 8,945,977 +1,577,315 +21%
Vanguard Group
4
Vanguard Group
Pennsylvania
$17.2M 5,422,274 +1,155,954 +27%
PHS
5
PFM Health Sciences
California
$14.6M 4,585,782 +4,340,915 +1,773%
PAMS
6
Pictet Asset Management (Switzerland)
Switzerland
$9.87M 3,104,751 +2,013,689 +185%
Dimensional Fund Advisors
7
Dimensional Fund Advisors
Texas
$8.26M 2,596,469 +573,662 +28%
BBA
8
Baker Bros. Advisors
New York
$7.95M 2,499,715 – –
Citadel Advisors
9
Citadel Advisors
Florida
$6.94M 2,181,370 +1,938,566 +798%
DM
10
Deerfield Management
New York
$6.92M 2,175,000 +2,175,000 New
Geode Capital Management
11
Geode Capital Management
Massachusetts
$6.67M 2,098,642 +465,935 +29%
Bank of America
12
Bank of America
North Carolina
$6.25M 1,965,273 +1,265,034 +181%
Rafferty Asset Management
13
Rafferty Asset Management
New York
$5.43M 1,708,443 +545,280 +47%
CS
14
Credit Suisse
Switzerland
$5.37M 1,688,224 +32,691 +2%
Millennium Management
15
Millennium Management
New York
$5.15M 1,619,161 +896,076 +124%
Goldman Sachs
16
Goldman Sachs
New York
$5.11M 1,607,761 -150,279 -9%
Balyasny Asset Management
17
Balyasny Asset Management
Illinois
$4.61M 1,450,239 +502,632 +53%
GIM
18
Granahan Investment Management
Massachusetts
$4.6M 1,445,257 +735,728 +104%
FLSM
19
Frazier Life Sciences Management
California
$4.58M 1,440,757 – –
Jacobs Levy Equity Management
20
Jacobs Levy Equity Management
New Jersey
$4.3M 1,351,923 +596,779 +79%
Citigroup
21
Citigroup
New York
$4.19M 1,319,168 +836,097 +173%
Susquehanna International Group
22
Susquehanna International Group
Pennsylvania
$4.1M 1,288,819 +841,766 +188%
JPMorgan Chase & Co
23
JPMorgan Chase & Co
New York
$3.96M 1,244,967 -48,079 -4%
Voloridge Investment Management
24
Voloridge Investment Management
Florida
$3.35M 1,052,249 -188,524 -15%
Northern Trust
25
Northern Trust
Illinois
$2.93M 922,760 +141,983 +18%
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