Key indices end marginally higher on Wall Street in a volatile session

On Wall Street, the key indices ended marginally higher yesterday in a volatile session as investors waited for earnings season and monitored developments in Washington after supporters of outgoing US President Donald Trump stormed the Capitol.   So the Dow Jones Industrial Average rose 60 points, or 0.2 per cent, to close at 31,069. The S&P 500 gained 2 points, to end at 3,801. And the Nasdaq Composite added 36 points, to 13,072. The small-cap Russell 2000 index gained about 1.4%.   Sha...