what is the best returning index fund in september 2014

DUST had the highest return in September 2014 by a major index or ETF, returning 76.8%.

ASSET MONTH % RETURN
DUST
September 2014
76.82%
BZQ
September 2014
43.73%
ZSL
September 2014
25.86%
ERY
September 2014
25.19%
EDZ
September 2014
24.99%
SRTY
September 2014
20.23%
TZA
September 2014
20%
YANG
September 2014
18.7%
DRV
September 2014
18.26%
DUG
September 2014
16.83%
EEV
September 2014
16.3%
SMDD
September 2014
15.1%
TWM
September 2014
13.15%
FXP
September 2014
11.9%
SRS
September 2014
11.79%
SDD
September 2014
10.96%
VIXY
September 2014
10.95%
MZZ
September 2014
10.75%
ASHS
September 2014
10.02%
GLL
September 2014
9.74%
YCS
September 2014
9.54%
EFU
September 2014
8.44%
EUM
September 2014
7.83%
EUO
September 2014
7.72%
EPV
September 2014
7.71%