BLUE

bluebird bio
BLUE

Overview Fund Activity
Delisted

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

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187 hedge funds and large institutions have $1.71B invested in bluebird bio in 2016 Q1 according to their latest regulatory filings, with 35 funds opening new positions, 81 increasing their positions, 48 reducing their positions, and 38 closing their positions.

New
Increased
Maintained
Reduced
Closed
Holders
187
Holders Change
-6
Holders Change %
-3.11%
% of All Funds
4.99%
Holding in Top 10
4
Holding in Top 10 Change
+1
Holding in Top 10 Change %
+33.33%
% of All Funds
0.11%
New
35
Increased
81
Reduced
48
Closed
38
Calls
$16.8M
Puts
$31M
Net Calls
-$14.2M
Net Calls Change
-$1.39M

Top Buyers

1
Wellington Management Group
Wellington Management Group
Massachusetts
+$51.1M
2
GPP
Great Point Partners
Connecticut
+$16.7M
3
ACH
ArrowMark Colorado Holdings
Colorado
+$10.7M
4
State Street
State Street
Massachusetts
+$10.5M
5
Susquehanna International Group
Susquehanna International Group
Pennsylvania
+$10.4M

Top Sellers

1
PHS
PFM Health Sciences
California
-$42.9M
2
Capital World Investors
Capital World Investors
California
-$31.2M
3
Ameriprise
Ameriprise
Minnesota
-$16.7M
4
Capital Fund Management (CFM)
Capital Fund Management (CFM)
France
-$16.6M
5
State of Tennessee, Department of Treasury
State of Tennessee, Department of Treasury
Tennessee
-$12.3M
Name Holding Trade Value Shares
Change 		Shares
Change %
Susquehanna International Group
26
Susquehanna International Group
Pennsylvania
$12M +$10.4M +18,932 +668%
EA
27
Emerald Advisers
Pennsylvania
$11.1M +$1.3M +2,365 +13%
Norges Bank
28
Norges Bank
Norway
$10.3M – – –
Invesco
29
Invesco
Georgia
$9.89M +$230K +417 +2%
RI
30
RTW Investments
New York
$9.62M +$9.4M +17,067 +4,173%
Balyasny Asset Management
31
Balyasny Asset Management
Illinois
$9.17M +$3.46M +6,284 +61%
EMFAT
32
Emerald Mutual Fund Advisers Trust
Pennsylvania
$9.01M +$838K +1,522 +10%
New York State Common Retirement Fund
33
New York State Common Retirement Fund
New York
$8.36M +$1.09M +1,976 +15%
Millennium Management
34
Millennium Management
New York
$7.4M +$5.96M +10,826 +415%
Mitsubishi UFJ Trust & Banking
35
Mitsubishi UFJ Trust & Banking
Japan
$6.96M +$551 +1 +0%
Bank of America
36
Bank of America
North Carolina
$6.71M -$744K -1,351 -10%
UBS AM
37
UBS AM
Illinois
$6.7M +$50.6K +92 +0.8%
Bank of New York Mellon
38
Bank of New York Mellon
New York
$6.55M +$208K +378 +3%
Northern Trust
39
Northern Trust
Illinois
$6.55M +$631K +1,103 +11%
Axa
40
Axa
France
$6.33M +$1.02M +1,857 +19%
CC
41
Casdin Capital
New York
$5.1M +$850K +1,544 +20%
GGHC
42
Gilder Gagnon Howe & Co
New York
$4.72M -$7.84M -14,234 -62%
Ameriprise
43
Ameriprise
Minnesota
$4.7M -$16.7M -30,333 -78%
CS
44
Credit Suisse
Switzerland
$4.51M +$1.45M +2,638 +48%
Charles Schwab
45
Charles Schwab
California
$4.32M +$369K +671 +9%
Artisan Partners
46
Artisan Partners
Wisconsin
$4.03M -$64.4K -117 -2%
TAM
47
Tiverton Asset Management
Delaware
$3.96M +$3.96M +7,188 New
FCM
48
Frontier Capital Management
Massachusetts
$3.94M -$2.3M -4,170 -37%
California Public Employees Retirement System
49
California Public Employees Retirement System
California
$3.78M -$234K -425 -6%
California State Teachers Retirement System (CalSTRS)
50
California State Teachers Retirement System (CalSTRS)
California
$3.23M +$414K +752 +15%
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