what is the best returning index fund in june 2013

DUST had the highest return in June 2013 by a major index or ETF, returning 59.6%.

ASSET MONTH % RETURN
DUST
June 2013
59.63%
BZQ
June 2013
28.14%
ZSL
June 2013
26.08%
GLL
June 2013
25.29%
KOLD
June 2013
23.11%
FXP
June 2013
15.53%
EDZ
June 2013
14.54%
SMN
June 2013
12.87%
EEV
June 2013
10.2%
EZJ
June 2013
10.13%
VIXM
June 2013
8.99%
EPV
June 2013
8.48%
VIXY
June 2013
8.35%
TECS
June 2013
8.27%
TMV
June 2013
7.85%
TTT
June 2013
7.41%
REW
June 2013
7.41%
YXI
June 2013
7.18%
UCO
June 2013
7%
TYO
June 2013
6.92%
SQQQ
June 2013
6.55%
ERY
June 2013
6.37%
EWJ
June 2013
5.66%
TBT
June 2013
5.31%
EUM
June 2013
5.14%