BLUE

bluebird bio
BLUE

Overview Fund Activity
Delisted

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

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210 hedge funds and large institutions have $3.8B invested in bluebird bio in 2015 Q1 according to their latest regulatory filings, with 59 funds opening new positions, 71 increasing their positions, 68 reducing their positions, and 18 closing their positions.

New
Increased
Maintained
Reduced
Closed
Holders
210
Holders Change
+41
Holders Change %
+24.26%
% of All Funds
5.6%
Holding in Top 10
4
Holding in Top 10 Change
-3
Holding in Top 10 Change %
-42.86%
% of All Funds
0.11%
New
59
Increased
71
Reduced
68
Closed
18
Calls
$97.3M
Puts
$70M
Net Calls
+$27.3M
Net Calls Change
-$1.56M

Top Buyers

1
Baillie Gifford & Co
Baillie Gifford & Co
United Kingdom
$155M
2
Vanguard Group
Vanguard Group
Pennsylvania
$167M
3
O
OrbiMed
New York
$66.5M
4
Capital World Investors
Capital World Investors
California
$164M
5
T. Rowe Price Associates
T. Rowe Price Associates
Maryland
$232M

Top Sellers

1
TRV
Third Rock Ventures
Massachusetts
$0
2
RCM
RA Capital Management
Massachusetts
$24.2M
3
FCM
Frontier Capital Management
Massachusetts
$30.2M
4
DM
Deerfield Management
New York
$76.2M
5
PHS
PFM Health Sciences
California
$24.1M
Name Holding Trade Value Shares
Change 		Shares
Change %
FCM
26
Frontier Capital Management
Massachusetts
$30.2M -$27.5M -17,554 -48%
Invesco
27
Invesco
Georgia
$29.1M +$3.07M +1,961 +12%
RCM
28
RA Capital Management
Massachusetts
$24.2M -$36.9M -23,604 -60%
PHS
29
PFM Health Sciences
California
$24.1M -$21.2M -13,549 -47%
Citadel Advisors
30
Citadel Advisors
Florida
$23.2M +$239K +153 +1%
Geode Capital Management
31
Geode Capital Management
Massachusetts
$23.2M +$8.87M +5,668 +62%
DFO
32
Duquesne Family Office
New York
$22.2M -$20.7M -13,226 -48%
Ameriprise
33
Ameriprise
Minnesota
$21.3M -$8.83M -5,643 -29%
Bank of New York Mellon
34
Bank of New York Mellon
New York
$19.8M +$4.31M +2,753 +28%
TCIM
35
TIAA CREF Investment Management
New York
$19M +$4.52M +2,890 +31%
BBA
36
Baker Bros. Advisors
New York
$17.7M -$413K -264 -2%
JPMorgan Chase & Co
37
JPMorgan Chase & Co
New York
$17.1M +$704K +450 +4%
Susquehanna International Group
38
Susquehanna International Group
Pennsylvania
$17M +$12.4M +7,916 +266%
Norges Bank
39
Norges Bank
Norway
$16.8M +$16.8M +10,741 New
PA
40
Perceptive Advisors
New York
$16.3M -$10.9M -6,948 -40%
Deutsche Bank
41
Deutsche Bank
Germany
$15.6M -$2M -1,280 -11%
FAM
42
Fred Alger Management
New York
$15.2M -$7.03M -4,495 -32%
Mitsubishi UFJ Trust & Banking
43
Mitsubishi UFJ Trust & Banking
Japan
$14.9M +$14.9M +9,534 New
CCM
44
Cadian Capital Management
New York
$14.5M +$14.5M +9,264 New
QF
45
QVT Financial
New York
$14.2M -$5.43M -3,470 -28%
Nuveen Asset Management
46
Nuveen Asset Management
Illinois
$14.2M -$1.17M -748 -8%
TA
47
Teachers Advisors
New York
$13M +$8.28M +5,293 +175%
BNP Paribas Asset Management
48
BNP Paribas Asset Management
France
$13M -$3.17M -2,029 -20%
Allianz Asset Management
49
Allianz Asset Management
Germany
$13M +$5.8M +3,707 +81%
Marshall Wace
50
Marshall Wace
United Kingdom
$12.5M -$1.01M -644 -7%
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