BLUE

bluebird bio
BLUE

Overview Fund Activity
Delisted

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

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192 hedge funds and large institutions have $3.12B invested in bluebird bio in 2015 Q3 according to their latest regulatory filings, with 21 funds opening new positions, 93 increasing their positions, 59 reducing their positions, and 63 closing their positions.

New
Increased
Maintained
Reduced
Closed
Holders
192
Holders Change
-43
Holders Change %
-18.3%
% of All Funds
5.37%
Holding in Top 10
4
Holding in Top 10 Change
-4
Holding in Top 10 Change %
-50%
% of All Funds
0.11%
New
21
Increased
93
Reduced
59
Closed
63
Calls
$59.5M
Puts
$64M
Net Calls
-$4.52M
Net Calls Change
-$9.39M

Top Buyers

1
Baillie Gifford & Co
Baillie Gifford & Co
United Kingdom
$409M
2
Viking Global Investors
Viking Global Investors
Connecticut
$52.7M
3
O
OppenheimerFunds
New York
$96.5M
4
First Trust Advisors
First Trust Advisors
Illinois
$28.2M
5
O
OrbiMed
New York
$102M

Top Sellers

1
TCP
Tourbillon Capital Partners
New York
$0
2
PC
Passport Capital
California
$0
3
Lord, Abbett & Co
Lord, Abbett & Co
New Jersey
$17.1M
4
Two Sigma Investments
Two Sigma Investments
New York
$0
5
KCM
Kingdon Capital Management
New York
$0
Name Holding Trade Value Shares
Change 		Shares
Change %
Janus Henderson Group
226
Janus Henderson Group
United Kingdom
– -$842K -386 Closed
MIG
227
Mariner Investment Group
New York
– -$673K -309 Closed
CCM
228
Cupps Capital Management
Illinois
– -$619K -284 Closed
ECM
229
Endurant Capital Management
California
– -$589K -270 Closed
Wellington Management Group
230
Wellington Management Group
Massachusetts
– -$569K -261 Closed
CI
231
Cowen Inc
New York
– -$533K -245 Closed
NCCM
232
Nine Chapters Capital Management
New Jersey
– -$522K -239 Closed
PIM
233
Partner Investment Management
California
– -$482K -221 Closed
MSU
234
Maple Securities USA
New Jersey
– -$463K -212 Closed
PAG
235
Private Advisor Group
New Jersey
– -$459K -210 Closed
Verition Fund Management
236
Verition Fund Management
Connecticut
– -$389K -178 Closed
CG
237
Clinton Group
New York
– -$383K -175 Closed
EMG
238
Ellington Management Group
Connecticut
– -$354K -162 Closed
FBC
239
Fairfield, Bush & Co
Connecticut
– -$337K -154 Closed
FAB
240
First American Bank
Illinois
– -$324K -149 Closed
JPTCCM
241
J.P. Turner & Co Capital Management
Georgia
– -$310K -141 Closed
William Blair & Company
242
William Blair & Company
Illinois
– -$289K -133 Closed
JT
243
Jump Trading
Illinois
– -$289K -133 Closed
FNYS
244
First New York Securities
New York
– -$289K -132 Closed
ACH
245
ArrowMark Colorado Holdings
Colorado
– -$278K -127 Closed
ICAS
246
Investors Capital Advisory Services
Massachusetts
– -$269K -124 Closed
Prudential Financial
247
Prudential Financial
New Jersey
– -$232K -107 Closed
KIA
248
Kopp Investment Advisors
Minnesota
– -$212K -97 Closed
VAM
249
Visium Asset Management
New York
– -$202K -93 Closed
SGC
250
South Georgia Capital
Illinois
– -$51K -23 Closed
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