[Chart courtesy of MarketWatch.com][Chart courtesy of MarketWatch.com]Moving the marketThe S&P 500 and Nasdaq jumped early, powered by solid gains in Big Tech, as traders positioned for a packed week of earnings reports and the Fed’s first policy meeting on Wednesday. The Dow, however, stumbled out of the gate and stayed under pressure.Big Tech names led the charge: Apple climbed nearly 2%, Microsoft added 1.3%, and the whole sector got a boost from anticipation around upcoming results. More than 90 S&P 500 ...