BLUE

bluebird bio
BLUE

Overview Fund Activity
Delisted

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

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229 hedge funds and large institutions have $1.59B invested in bluebird bio in 2021 Q1 according to their latest regulatory filings, with 48 funds opening new positions, 85 increasing their positions, 64 reducing their positions, and 78 closing their positions.

New
Increased
Maintained
Reduced
Closed
Holders
229
Holders Change
-33
Holders Change %
-12.6%
% of All Funds
4.03%
Holding in Top 10
1
Holding in Top 10 Change
+1
Holding in Top 10 Change %
%
% of All Funds
0.02%
New
48
Increased
85
Reduced
64
Closed
78
Calls
$25.8M
Puts
$45.8M
Net Calls
-$20M
Net Calls Change
-$16.8M

Top Buyers

1
Wellington Management Group
Wellington Management Group
Massachusetts
$209M
2
AC
Armistice Capital
New York
$59.2M
3
SCM
Suvretta Capital Management
New York
$39.3M
4
SC
Sessa Capital
New York
$26.4M
5
CS
Credit Suisse
Switzerland
$70M

Top Sellers

1
Capital Research Global Investors
Capital Research Global Investors
California
$0
2
Sands Capital Management
Sands Capital Management
Virginia
$0
3
Capital World Investors
Capital World Investors
California
$0
4
Capital International Investors
Capital International Investors
California
$0
5
CC
Casdin Capital
New York
$0
Name Holding Trade Value Shares
Change 		Shares
Change %
SWM
226
Sugarloaf Wealth Management
Georgia
$19 -$17 -36 -47%
Capital Research Global Investors
227
Capital Research Global Investors
California
– -$352M -627,504 Closed
Sands Capital Management
228
Sands Capital Management
Virginia
– -$137M -244,234 Closed
Capital World Investors
229
Capital World Investors
California
– -$135M -241,417 Closed
Capital International Investors
230
Capital International Investors
California
– -$48.8M -87,057 Closed
CC
231
Casdin Capital
New York
– -$39.6M -70,638 Closed
Renaissance Technologies
232
Renaissance Technologies
New York
– -$26.1M -46,606 Closed
PIM
233
Platinum Investment Management
Australia
– -$23.2M -41,346 Closed
Massachusetts Financial Services
234
Massachusetts Financial Services
Massachusetts
– -$19.4M -34,661 Closed
Bessemer Group
235
Bessemer Group
New Jersey
– -$17.2M -30,764 Closed
Axa
236
Axa
France
– -$8.98M -16,024 Closed
TCM
237
TimesSquare Capital Management
New York
– -$8.22M -14,660 Closed
GLA
238
Great Lakes Advisors
Illinois
– -$5.85M -10,428 Closed
SM
239
Senvest Management
New York
– -$5.61M -10,008 Closed
N
240
Natixis
France
– -$5.46M -9,740 Closed
FCM
241
Frontier Capital Management
Massachusetts
– -$5.39M -9,619 Closed
AIMCA
242
Alberta Investment Management Corp (AIMCo)
Alberta, Canada
– -$4.11M -7,323 Closed
Arrowstreet Capital
243
Arrowstreet Capital
Massachusetts
– -$3.02M -5,381 Closed
Qube Research & Technologies (QRT)
244
Qube Research & Technologies (QRT)
United Kingdom
– -$2.92M -5,208 Closed
GIM
245
Granahan Investment Management
Massachusetts
– -$2.6M -4,639 Closed
DLPIC
246
Davide Leone & Partners Investment Company
United Kingdom
– -$1.7M -3,035 Closed
WC
247
Wexford Capital
Florida
– -$1.47M -2,623 Closed
DCM
248
DAFNA Capital Management
California
– -$1.31M -2,337 Closed
Thrivent Financial for Lutherans
249
Thrivent Financial for Lutherans
Minnesota
– -$1.31M -2,336 Closed
EGM
250
Engineers Gate Manager
New York
– -$1.25M -2,232 Closed
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