BLUE

bluebird bio
BLUE

Overview Fund Activity
Delisted

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

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303 hedge funds and large institutions have $9B invested in bluebird bio in 2018 Q1 according to their latest regulatory filings, with 56 funds opening new positions, 93 increasing their positions, 113 reducing their positions, and 44 closing their positions.

New
Increased
Maintained
Reduced
Closed
Holders
303
Holders Change
+7
Holders Change %
+2.36%
% of All Funds
6.95%
Holding in Top 10
2
Holding in Top 10 Change
-1
Holding in Top 10 Change %
-33.33%
% of All Funds
0.05%
New
56
Increased
93
Reduced
113
Closed
44
Calls
$185M
Puts
$168M
Net Calls
+$17.5M
Net Calls Change
-$69.5M

Top Buyers

1
Capital International Investors
Capital International Investors
California
+$174M
2
Goldman Sachs
Goldman Sachs
New York
+$64.5M
3
Capital World Investors
Capital World Investors
California
+$56.9M
4
CGT
Capital Guardian Trust
California
+$49.9M
5
First Trust Advisors
First Trust Advisors
Illinois
+$46.7M

Top Sellers

1
Wellington Management Group
Wellington Management Group
Massachusetts
-$52.9M
2
Franklin Resources
Franklin Resources
California
-$52.1M
3
1832 Asset Management
1832 Asset Management
Ontario, Canada
-$51M
4
MWNA
Marshall Wace North America
New York
-$47.3M
5
ACH
ArrowMark Colorado Holdings
Colorado
-$39.5M
Name Holding Trade Value Shares
Change 		Shares
Change %
Nuveen Asset Management
326
Nuveen Asset Management
Illinois
– -$611K -265 Closed
BTS
327
BB&T Securities
Virginia
– -$557K -242 Closed
LCG
328
Lisanti Capital Growth
New York
– -$554K -240 Closed
FMT
329
First Mercantile Trust
Tennessee
– -$438K -190 Closed
Marshall Wace
330
Marshall Wace
United Kingdom
– -$398K -172 Closed
DCM
331
DAFNA Capital Management
California
– -$356K -154 Closed
WMSA
332
Weiss Multi-Strategy Advisers
New York
– -$356K -154 Closed
CCM
333
Covington Capital Management
California
– -$356K -154 Closed
GCA
334
Gideon Capital Advisors
New York
– -$330K -143 Closed
Creative Planning
335
Creative Planning
Kansas
– -$323K -140 Closed
LNC
336
Lincoln National Corp
Pennsylvania
– -$321K -139 Closed
S
337
SignatureFD
Georgia
– -$294K -128 Closed
PG
338
PEAK6 Group
Illinois
– -$277K -120 Closed
II
339
Ibex Investors
Colorado
– -$265K -113 Closed
DCM
340
Driehaus Capital Management
Illinois
– -$243K -105 Closed
QOP
341
Quinn Opportunity Partners
Virginia
– -$232K -100 Closed
PP
342
Paloma Partners
Connecticut
– -$205K -89 Closed
Pacer Advisors
343
Pacer Advisors
Pennsylvania
– -$160K -69 Closed
II
344
Inspire Investing
Idaho
– -$57K -25 Closed
STA
345
Summit Trail Advisors
New York
– -$41K -16 Closed
AIL
346
AGF Investments LLC
Ontario, Canada
– -$20K -9 Closed
AI
347
ArchPoint Investors
Florida
– -$18K -8 Closed
BBHC
348
Brown Brothers Harriman & Co
New York
– -$2K -1 Closed
FMA
349
FNY Managed Accounts
New York
– -$3K -1 Closed
MPWT
350
MassMutual Private Wealth & Trust
Connecticut
– -$891 – –
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