Small-capitalization stocks jumped on Friday. Several factors indicate a longer rally could just be beginning,
The S&P 600, an index of small-cap stocks, rose 2.9% Friday, more than triple the percentage-point gain on the large cap S&P 500. The leap came after Federal Reserve Chairman Jerome Powell reassured markets that the bank is in no rush to raise interest rates. Low rates, for longer, would mean more-sustained economic growth, while slowing increases in daily Covid-19 cases are already boosting optimism about the outlook….