This year has been volatile for investors so far. Nifty 50 is up four per cent in 2018 while mid-cap and small-cap indices are still down by 12.3 per cent and 14.6 per cent, respectively, in 2018. However, in the last one year, Nifty 50 is up by 12 per cent while mid-cap and small-cap indices are five per cent and four per cent, respectively.