what is the best returning index fund from january 2015 to february 2016

KOLD had the highest return between January 1, 2015 and February 29, 2016 by a major index or ETF, returning 207.5%.

ASSET DATE % RETURN
KOLD
1/1/2015 - 2/29/2016
207.5%
DRIP
1/1/2015 - 2/29/2016
173.41%
SCO
1/1/2015 - 2/29/2016
99.06%
LABD
1/1/2015 - 2/29/2016
80.05%
HBTPF
1/1/2015 - 2/29/2016
76.07%
BZQ
1/1/2015 - 2/29/2016
72.73%
AMJ
1/1/2015 - 2/29/2016
51.68%
BSCO
1/1/2015 - 2/29/2016
48.51%
FM
1/1/2015 - 2/29/2016
48.11%
EMFM
1/1/2015 - 2/29/2016
47.91%
RNSC
1/1/2015 - 2/29/2016
47.45%
KOIN
1/1/2015 - 2/29/2016
47.45%
IBMM
1/1/2015 - 2/29/2016
47.45%
LSST
1/1/2015 - 2/29/2016
47.45%
GBTC
1/1/2015 - 2/29/2016
47.4%
ERY
1/1/2015 - 2/29/2016
42.57%
DUG
1/1/2015 - 2/29/2016
38.87%
EDZ
1/1/2015 - 2/29/2016
37.04%
FXP
1/1/2015 - 2/29/2016
30.5%
EEV
1/1/2015 - 2/29/2016
29.56%
YANG
1/1/2015 - 2/29/2016
27.92%
SMN
1/1/2015 - 2/29/2016
20.77%
GOEX
1/1/2015 - 2/29/2016
20.48%
YXI
1/1/2015 - 2/29/2016
19.37%
SRTY
1/1/2015 - 2/29/2016
19%