BLUE

bluebird bio
BLUE

Overview Fund Activity
Delisted

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

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235 hedge funds and large institutions have $5.86B invested in bluebird bio in 2015 Q2 according to their latest regulatory filings, with 53 funds opening new positions, 71 increasing their positions, 88 reducing their positions, and 24 closing their positions.

New
Increased
Maintained
Reduced
Closed
Holders
235
Holders Change
+25
Holders Change %
+11.9%
% of All Funds
6.34%
Holding in Top 10
8
Holding in Top 10 Change
+4
Holding in Top 10 Change %
+100%
% of All Funds
0.22%
New
53
Increased
71
Reduced
88
Closed
24
Calls
$117M
Puts
$112M
Net Calls
+$4.88M
Net Calls Change
-$22.4M

Top Buyers

1
Baillie Gifford & Co
Baillie Gifford & Co
United Kingdom
$623M
2
Vanguard Group
Vanguard Group
Pennsylvania
$349M
3
Fidelity Investments
Fidelity Investments
Massachusetts
$903M
4
O
OrbiMed
New York
$161M
5
Capital Research Global Investors
Capital Research Global Investors
California
$738M

Top Sellers

1
Millennium Management
Millennium Management
New York
$26.1M
2
BFA
BlackRock Fund Advisors
California
$116M
3
DM
Deerfield Management
New York
$55M
4
UBS AM
UBS AM
Illinois
$44M
5
FCM
Frontier Capital Management
Massachusetts
$3.71M
Name Holding Trade Value Shares
Change 		Shares
Change %
DCM
151
DAFNA Capital Management
California
$1.01M -$338K -155 -25%
URS
152
Utah Retirement Systems
Utah
$994K +$994K +455 New
IRF
153
IBM Retirement Fund
New York
$988K +$988K +453 New
Barclays
154
Barclays
United Kingdom
$900K +$634K +291 +239%
DCM
155
Dupont Capital Management
Delaware
$891K -$487K -223 -35%
Janus Henderson Group
156
Janus Henderson Group
United Kingdom
$842K +$842K +386 New
VKH
157
Virtu KCG Holdings
New York
$785K +$225K +103 +40%
US Bancorp
158
US Bancorp
Minnesota
$726K -$126K -58 -15%
MIG
159
Mariner Investment Group
New York
$673K -$168K -77 -20%
WS
160
Wedbush Securities
California
$671K -$144K -66 -18%
NMIMC
161
Northwestern Mutual Investment Management Company
Wisconsin
$650K +$650K +298 New
AB
162
Amalgamated Bank
New York
$636K +$213K +98 +51%
CAN
163
Cetera Advisor Networks
California
$629K – – –
CCM
164
Cupps Capital Management
Illinois
$619K +$619K +284 New
AIM
165
Advantage Investment Management
Iowa
$617K +$32.7K +15 +6%
WA
166
Winfield Associates
Ohio
$600K +$323K +148 +117%
ECM
167
Endurant Capital Management
California
$589K -$724K -332 -55%
PCM
168
Prelude Capital Management
New York
$573K -$67.5K -31 -11%
Wellington Management Group
169
Wellington Management Group
Massachusetts
$569K -$6.93M -3,181 -92%
PAM
170
Panagora Asset Management
Massachusetts
$539K +$408K +187 +312%
CI
171
Cowen Inc
New York
$533K -$276K -127 -34%
NCCM
172
Nine Chapters Capital Management
New Jersey
$522K +$522K +239 New
KBC Group
173
KBC Group
Belgium
$505K +$505K +232 New
PIM
174
Partner Investment Management
California
$482K -$142K -65 -23%
CIM
175
CenturyLink Investment Management
Colorado
$480K +$329K +151 +219%
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