Asset class5-mo.
return
ETF
symbol
PriceBid-ask
spread
Buy
Emerging-market stocks
+12.86 
VWO
44.52
0.02%
34%
Developed-market large-cap stocks
+9.80 
VEA
43.27
0.02%
33%
US large-cap stocks
+5.75 
VONE
115.26
0.02%
33%
US small-cap stocks
+3.77 
VTWO
115.72
0.08%
US Treasury bonds, 20+ yr.
+3.38 
VGLT
77.63
0.12%
Commodities
+2.97 
PDBC
16.79
0.12%
Gold
+1.10 
IAU
12.43
0.08%
US real-estate investment trusts
+0.85 
VNQ
84.07
0.01%
US Treasury bills, 1 to 12 mo.
+0.19 
SHV
110.35
0.01%
Numbers calculated on September 21, 2017, at 1:29 pm NYC time (data at least 20 minutes delayed).