BLUE

bluebird bio
BLUE

Overview Fund Activity
Delisted

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

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175 hedge funds and large institutions have $581M invested in bluebird bio in 2021 Q4 according to their latest regulatory filings, with 27 funds opening new positions, 61 increasing their positions, 46 reducing their positions, and 48 closing their positions.

Holders
175
Holders Change
-23
Holders Change %
-11.62%
% of All Funds
2.7%
Holding in Top 10
–
Holding in Top 10 Change
–
Holding in Top 10 Change %
–
% of All Funds
–
New
27
Increased
61
Reduced
46
Closed
48
Calls
$4.39M
Puts
$6.11M
Net Calls
-$1.73M
Net Calls Change
+$6.91M

Top Buyers

1
State Street
1
State Street
Massachusetts
$76.1M
2
First Trust Advisors
2
First Trust Advisors
Illinois
$52M
3
Bank of America
3
Bank of America
North Carolina
$6.94M
4
Rafferty Asset Management
4
Rafferty Asset Management
New York
$5.88M
5
Citigroup
5
Citigroup
New York
$5.07M

Top Sellers

1
EC
1
EcoR1 Capital
California
$0
2
SC
2
Sessa Capital
New York
$9.11M
3
Wellington Management Group
3
Wellington Management Group
Massachusetts
$61.3M
4
Voloridge Investment Management
4
Voloridge Investment Management
Florida
$1.8M
5
Principal Financial Group
5
Principal Financial Group
Iowa
$2.07M
Name Market Value Shares Shares
Change 		Shares
Change %
State Street
1
State Street
Massachusetts
$76.1M 7,617,310 +3,147,374 +70%
Vanguard Group
2
Vanguard Group
Pennsylvania
$72.3M 7,233,590 +144,386 +2%
Wellington Management Group
3
Wellington Management Group
Massachusetts
$61.3M 6,140,000 -778,987 -11%
BlackRock
4
BlackRock
New York
$59.1M 5,912,002 +142,293 +2%
First Trust Advisors
5
First Trust Advisors
Illinois
$52M 5,204,825 +2,904,800 +126%
BBA
6
Baker Bros. Advisors
New York
$25M 2,499,715 – –
AC
7
Armistice Capital
New York
$23.5M 2,348,000 -124,000 -5%
JPMorgan Chase & Co
8
JPMorgan Chase & Co
New York
$22.1M 2,215,910 +283,213 +15%
CS
9
Credit Suisse
Switzerland
$22M 2,199,297 +195,005 +10%
Goldman Sachs
10
Goldman Sachs
New York
$15.2M 1,520,751 +17,219 +1%
Geode Capital Management
11
Geode Capital Management
Massachusetts
$12.4M 1,237,612 +71,197 +6%
SC
12
Sessa Capital
New York
$9.11M 912,328 -922,637 -50%
Northern Trust
13
Northern Trust
Illinois
$7.19M 719,985 +2,348 +0.3%
Bank of America
14
Bank of America
North Carolina
$6.94M 694,929 +581,642 +513%
Rafferty Asset Management
15
Rafferty Asset Management
New York
$5.88M 588,528 +414,254 +238%
BCLSI
16
Bain Capital Life Sciences Investors
Massachusetts
$5.38M 538,179 – –
Millennium Management
17
Millennium Management
New York
$5.31M 531,177 +259,870 +96%
Citigroup
18
Citigroup
New York
$5.07M 507,458 +358,494 +241%
Morgan Stanley
19
Morgan Stanley
New York
$4.87M 487,080 +192,508 +65%
Dimensional Fund Advisors
20
Dimensional Fund Advisors
Texas
$4.54M 453,869 +116,621 +35%
Nuveen Asset Management
21
Nuveen Asset Management
Illinois
$4.52M 451,977 -103,004 -19%
Norges Bank
22
Norges Bank
Norway
$4.13M 413,232 -113,322 -22%
Jacobs Levy Equity Management
23
Jacobs Levy Equity Management
New Jersey
$4.02M 401,985 -1,241 -0.3%
UBS Group
24
UBS Group
Switzerland
$3.95M 395,413 +205,602 +108%
Susquehanna International Group
25
Susquehanna International Group
Pennsylvania
$3.67M 367,007 +54,985 +18%
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