BLUE

bluebird bio
BLUE

Overview Fund Activity
Delisted

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

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288 hedge funds and large institutions have $8.48B invested in bluebird bio in 2018 Q3 according to their latest regulatory filings, with 37 funds opening new positions, 108 increasing their positions, 99 reducing their positions, and 54 closing their positions.

New
Increased
Maintained
Reduced
Closed
Holders
288
Holders Change
-19
Holders Change %
-6.19%
% of All Funds
6.59%
Holding in Top 10
2
Holding in Top 10 Change
-2
Holding in Top 10 Change %
-50%
% of All Funds
0.05%
New
37
Increased
108
Reduced
99
Closed
54
Calls
$177M
Puts
$151M
Net Calls
+$25.9M
Net Calls Change
-$69.3M

Top Buyers

1
Capital International Investors
Capital International Investors
California
+$311M
2
Wellington Management Group
Wellington Management Group
Massachusetts
+$207M
3
Capital World Investors
Capital World Investors
California
+$136M
4
Fidelity Investments
Fidelity Investments
Massachusetts
+$88.4M
5
Capital Research Global Investors
Capital Research Global Investors
California
+$72.2M

Top Sellers

1
Goldman Sachs
Goldman Sachs
New York
-$54M
2
Millennium Management
Millennium Management
New York
-$53.8M
3
Baillie Gifford & Co
Baillie Gifford & Co
United Kingdom
-$29.2M
4
MWNA
Marshall Wace North America
New York
-$29M
5
Citigroup
Citigroup
New York
-$26M
Name Holding Trade Value Shares
Change 		Shares
Change %
CM
301
Crestline Management
Texas
– -$2.54M -1,251 Closed
KCM
302
Kennedy Capital Management
Missouri
– -$2.31M -1,138 Closed
JG
303
Jefferies Group
New York
– -$2.23M -1,096 Closed
MSL
304
Mackay Shields LLC
New York
– -$2.22M -1,093 Closed
SSA
305
Schonfeld Strategic Advisors
New York
– -$2.04M -1,004 Closed
CIP
306
Chartwell Investment Partners
Pennsylvania
– -$1.44M -707 Closed
AR
307
Advisory Research
Illinois
– -$1.17M -576 Closed
CI
308
Cowen Inc
New York
– -$942 -463 Closed
FRM
309
Fox Run Management
Connecticut
– -$908K -446 Closed
EMG
310
ETF Managers Group
New Jersey
– -$1.78K -440 Closed
CEP
311
Chicago Equity Partners
Illinois
– -$785K -386 Closed
PVI
312
Pura Vida Investments
New York
– -$785K -386 Closed
CAM
313
Congress Asset Management
Massachusetts
– -$765K -376 Closed
PVAM
314
Pacific View Asset Management
California
– -$737K -362 Closed
SLG
315
Stanley-Laman Group
Pennsylvania
– -$686K -337 Closed
VF
316
Virtu Financial
New York
– -$608K -299 Closed
ZCA
317
Zeke Capital Advisors
Pennsylvania
– -$481K -237 Closed
HMS
318
Hanseatic Management Services
New Mexico
– -$412K -203 Closed
AB
319
AT Bancorp
Iowa
– -$409K -201 Closed
AIA
320
Affinity Investment Advisors
California
– -$405K -199 Closed
SGAM
321
Smith Group Asset Management
Texas
– -$350K -172 Closed
Janus Henderson Group
322
Janus Henderson Group
United Kingdom
– -$345K -170 Closed
DTL
323
Dynamic Technology Lab
Singapore
– -$320K -157 Closed
CPIA
324
Cornell Pochily Investment Advisors
New York
– -$223K -110 Closed
XS
325
XR Securities
Illinois
– -$212K -104 Closed
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