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 $308M invested in bluebird bio in 2023 Q2 according to their latest regulatory filings, with 26 funds opening new positions, 67 increasing their positions, 41 reducing their positions, and 29 closing their positions.

Holders
175
Holders Change
-3
Holders Change %
-1.69%
% of All Funds
2.76%
Holding in Top 10
2
Holding in Top 10 Change
+1
Holding in Top 10 Change %
+100%
% of All Funds
0.03%
New
26
Increased
67
Reduced
41
Closed
29
Calls
$3.89M
Puts
$5.74M
Net Calls
-$1.85M
Net Calls Change
-$1.36M

Top Buyers

1
GIM
1
Granahan Investment Management
Massachusetts
$16M
2
PHS
2
PFM Health Sciences
California
$24M
3
PAMS
3
Pictet Asset Management (Switzerland)
Switzerland
$15.4M
4
Walleye Capital
4
Walleye Capital
New York
$2.75M
5
Jacobs Levy Equity Management
5
Jacobs Levy Equity Management
New Jersey
$6.88M

Top Sellers

1
TCM
1
Tang Capital Management
California
$24.3M
2
DM
2
Deerfield Management
New York
$0
3
Citadel Advisors
3
Citadel Advisors
Florida
$1.44M
4
Millennium Management
4
Millennium Management
New York
$0
5
State Street
5
State Street
Massachusetts
$53.8M
Name Market Value Shares Shares
Change 		Shares
Change %
State Street
1
State Street
Massachusetts
$53.8M 16,358,130 -1,407,416 -8%
BlackRock
2
BlackRock
New York
$28.9M 8,792,722 -153,255 -2%
TCM
3
Tang Capital Management
California
$24.3M 7,382,827 -2,500,000 -25%
PHS
4
PFM Health Sciences
California
$24M 7,285,121 +2,699,339 +59%
Vanguard Group
5
Vanguard Group
Pennsylvania
$18.3M 5,571,244 +148,970 +3%
GIM
6
Granahan Investment Management
Massachusetts
$16M 4,856,322 +3,411,065 +236%
PAMS
7
Pictet Asset Management (Switzerland)
Switzerland
$15.4M 4,666,813 +1,562,062 +50%
BBA
8
Baker Bros. Advisors
New York
$8.22M 2,499,715 – –
Geode Capital Management
9
Geode Capital Management
Massachusetts
$7.3M 2,219,758 +121,116 +6%
Jacobs Levy Equity Management
10
Jacobs Levy Equity Management
New Jersey
$6.88M 2,090,910 +738,987 +55%
Bank of America
11
Bank of America
North Carolina
$6.36M 1,934,599 -30,674 -2%
CS
12
Credit Suisse
Switzerland
$6.09M 1,851,808 +163,584 +10%
Rafferty Asset Management
13
Rafferty Asset Management
New York
$6.05M 1,837,462 +129,019 +8%
JPMorgan Chase & Co
14
JPMorgan Chase & Co
New York
$5.8M 1,764,321 +519,354 +42%
FLSM
15
Frazier Life Sciences Management
California
$5.63M 1,709,907 +269,150 +19%
Dimensional Fund Advisors
16
Dimensional Fund Advisors
Texas
$4.56M 1,384,820 -1,211,649 -47%
Northern Trust
17
Northern Trust
Illinois
$3.7M 1,123,491 +200,731 +22%
Goldman Sachs
18
Goldman Sachs
New York
$3.48M 1,058,608 -549,153 -34%
Jane Street
19
Jane Street
New York
$3.14M 953,295 +439,219 +85%
Walleye Capital
20
Walleye Capital
New York
$2.75M 836,760 +836,760 New
Group One Trading
21
Group One Trading
Illinois
$2.62M 795,953 +635,031 +395%
WP
22
Woodline Partners
California
$2.58M 782,892 -5,033 -0.6%
Barclays
23
Barclays
United Kingdom
$2.47M 750,753 +193,676 +35%
Wellington Management Group
24
Wellington Management Group
Massachusetts
$1.83M 555,595 +325,234 +141%
Renaissance Technologies
25
Renaissance Technologies
New York
$1.81M 550,200 +550,200 New
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