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

Top Sellers

1
TRV
1
Third Rock Ventures
Massachusetts
$0
2
RCM
2
RA Capital Management
Massachusetts
$24.2M
3
FCM
3
Frontier Capital Management
Massachusetts
$30.2M
4
DM
4
Deerfield Management
New York
$76.2M
5
PHS
5
PFM Health Sciences
California
$24.1M
Name Holding Trade Value Shares
Change 		Shares
Change %
RI
51
RTW Investments
New York
$12.1M +$12.1M +7,720 New
EA
52
Emerald Advisers
Pennsylvania
$11M -$18.1M -10,539 -62%
DCM
53
Driehaus Capital Management
Illinois
$10.2M +$1.99M +1,272 +24%
Axa
54
Axa
France
$10.1M +$1.74M +1,114 +21%
Connor, Clark & Lunn Investment Management (CC&L)
55
Connor, Clark & Lunn Investment Management (CC&L)
British Columbia, Canada
$10M +$3.2M +2,046 +47%
Charles Schwab
56
Charles Schwab
California
$9.72M +$2.87M +1,834 +42%
CS
57
Credit Suisse
Switzerland
$9.62M -$1.33M -850 -12%
GC
58
Guggenheim Capital
Illinois
$9.56M +$2.27M +1,453 +31%
BA
59
BlackRock Advisors
Delaware
$9.34M +$1.26M +803 +16%
BIM
60
BlackRock Investment Management
Delaware
$9.09M +$1.13M +725 +14%
Artisan Partners
61
Artisan Partners
Wisconsin
$9.01M -$537K -343 -6%
EMFAT
62
Emerald Mutual Fund Advisers Trust
Pennsylvania
$7.96M -$15.2M -8,813 -66%
WJA
63
Williams Jones & Associates
New York
$7.85M +$6.03M +3,856 +332%
NFA
64
Nationwide Fund Advisors
Ohio
$7.57M -$249K -159 -3%
Renaissance Technologies
65
Renaissance Technologies
New York
$7.55M -$8.26M -5,280 -52%
HRCM
66
Hood River Capital Management
Florida
$7.13M -$300K -192 -4%
AQR Capital Management
67
AQR Capital Management
Connecticut
$7.05M -$5.7M -3,643 -45%
ARTA
68
A.R.T. Advisors
New York
$6.94M +$3.99M +2,550 +135%
TCM
69
Tekla Capital Management
Massachusetts
$6.59M – – –
Principal Financial Group
70
Principal Financial Group
Iowa
$6.09M +$68.8K +44 +1%
CS
71
Candriam SCA
Luxembourg
$5.8M -$361K -231 -6%
KCM
72
Kingdon Capital Management
New York
$5.79M -$17M -10,862 -75%
GL
73
GLG LLC
New York
$5.72M +$4.76M +3,043 +497%
New York State Common Retirement Fund
74
New York State Common Retirement Fund
New York
$5.55M +$4.39M +2,809 +380%
FT
75
Fiduciary Trust
Massachusetts
$5.5M -$299K -191 -5%
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