In the hunt for income, ETF investors with eyes fixed on the big guns may be missing out. The nation’s small-cap stocks are both increasing and initiating dividend payments, according to a new S&P Dow Jones Indices study. More than half the constituents of the S&P SmallCap 600 index — 324, or 54% — are now paying regular cash dividends. That’s up 10.2% from the end of 2013.