BLUE

bluebird bio
BLUE

Overview Fund Activity
Delisted

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

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168 hedge funds and large institutions have $272M invested in bluebird bio in 2023 Q3 according to their latest regulatory filings, with 15 funds opening new positions, 56 increasing their positions, 47 reducing their positions, and 21 closing their positions.

Holders
168
Holders Change
-7
Holders Change %
-4%
% of All Funds
2.68%
Holding in Top 10
1
Holding in Top 10 Change
-1
Holding in Top 10 Change %
-50%
% of All Funds
0.02%
New
15
Increased
56
Reduced
47
Closed
21
Calls
$4.45M
Puts
$5.56M
Net Calls
-$1.11M
Net Calls Change
+$732K

Top Buyers

1
Pictet Asset Management
1
Pictet Asset Management
Switzerland
$15.6M
2
Ameriprise
2
Ameriprise
Minnesota
$7M
3
WP
3
Woodline Partners
California
$8.3M
4
CIM
4
Contrarius Investment Management
Jersey
$3.98M
5
BL
5
Bleichroeder LP
New York
$2.74M

Top Sellers

1
State Street
1
State Street
Massachusetts
$38.5M
2
TCM
2
Tang Capital Management
California
$13M
3
PHS
3
PFM Health Sciences
California
$18.4M
4
Walleye Capital
4
Walleye Capital
New York
$0
5
Bank of America
5
Bank of America
North Carolina
$3.7M
Name Market Value Shares Shares
Change 		Shares
Change %
State Street
1
State Street
Massachusetts
$38.5M 12,665,116 -3,693,014 -23%
BlackRock
2
BlackRock
New York
$26.8M 8,828,413 +35,691 +0.4%
PHS
3
PFM Health Sciences
California
$18.4M 6,040,934 -1,244,187 -17%
Vanguard Group
4
Vanguard Group
Pennsylvania
$17.1M 5,617,460 +46,216 +0.8%
Pictet Asset Management
5
Pictet Asset Management
Switzerland
$15.6M 5,147,553 +5,147,553 New
GIM
6
Granahan Investment Management
Massachusetts
$15.6M 5,137,778 +281,456 +6%
TCM
7
Tang Capital Management
California
$13M 4,282,827 -3,100,000 -42%
WP
8
Woodline Partners
California
$8.3M 2,728,737 +1,945,845 +249%
BBA
9
Baker Bros. Advisors
New York
$7.6M 2,499,715 – –
Ameriprise
10
Ameriprise
Minnesota
$7M 2,302,473 +2,053,639 +825%
Geode Capital Management
11
Geode Capital Management
Massachusetts
$6.75M 2,221,494 +1,736 +0.1%
Jacobs Levy Equity Management
12
Jacobs Levy Equity Management
New Jersey
$5.6M 1,841,584 -249,326 -12%
CS
13
Credit Suisse
Switzerland
$5.43M 1,784,680 -67,128 -4%
FLSM
14
Frazier Life Sciences Management
California
$5.2M 1,709,907 – –
Dimensional Fund Advisors
15
Dimensional Fund Advisors
Texas
$5.13M 1,688,583 +303,763 +22%
JPMorgan Chase & Co
16
JPMorgan Chase & Co
New York
$5.08M 1,670,781 -93,540 -5%
Rafferty Asset Management
17
Rafferty Asset Management
New York
$4.53M 1,491,411 -346,051 -19%
CIM
18
Contrarius Investment Management
Jersey
$3.98M 1,308,002 +1,308,002 New
Bank of America
19
Bank of America
North Carolina
$3.7M 1,217,012 -717,587 -37%
Northern Trust
20
Northern Trust
Illinois
$3.44M 1,132,014 +8,523 +0.8%
BL
21
Bleichroeder LP
New York
$2.74M 900,000 +900,000 New
Citadel Advisors
22
Citadel Advisors
Florida
$2.38M 782,375 +343,341 +78%
Goldman Sachs
23
Goldman Sachs
New York
$2.31M 760,774 -297,834 -28%
JFG
24
Jefferies Financial Group
New York
$2.23M 732,900 +701,447 +2,230%
Deutsche Bank
25
Deutsche Bank
Germany
$2.11M 692,881 +309,690 +81%
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