what is the best returning index fund from august 16 2013 to august 31 2013

RTM had the highest return between August 16, 2013 and August 31, 2013 by a major index or ETF, returning 387.8%.

ASSET DATE % RETURN
RTM
8/16/2013 - 8/31/2013
387.83%
DUST
8/16/2013 - 8/31/2013
23.83%
EDZ
8/16/2013 - 8/31/2013
11.85%
VIXY
8/16/2013 - 8/31/2013
11.77%
BOIL
8/16/2013 - 8/31/2013
10.52%
EWV
8/16/2013 - 8/31/2013
8.55%
EEV
8/16/2013 - 8/31/2013
8.13%
EFU
8/16/2013 - 8/31/2013
8.13%
FAZ
8/16/2013 - 8/31/2013
7.8%
EPV
8/16/2013 - 8/31/2013
7.4%
FXP
8/16/2013 - 8/31/2013
7.03%
BIB
8/16/2013 - 8/31/2013
6.06%
UNG
8/16/2013 - 8/31/2013
5.93%
SKF
8/16/2013 - 8/31/2013
5.72%
TMF
8/16/2013 - 8/31/2013
5.53%
SMDD
8/16/2013 - 8/31/2013
5.32%
EDV
8/16/2013 - 8/31/2013
5.3%
SDOW
8/16/2013 - 8/31/2013
5.25%
ZROZ
8/16/2013 - 8/31/2013
4.94%
SOYB
8/16/2013 - 8/31/2013
4.79%
BZQ
8/16/2013 - 8/31/2013
4.61%
UBT
8/16/2013 - 8/31/2013
4.53%
TECS
8/16/2013 - 8/31/2013
4.42%
SPXU
8/16/2013 - 8/31/2013
4.24%
SPXS
8/16/2013 - 8/31/2013
4.22%