Wall Street inched lower before markets opened while investors waited for Nvidia’s quarterly earnings release, a bellwether report known to move the entire chipmaking sector. Futures for the S&P 500 dipped 0.3% before the bell Wednesday and futures for the Dow Jones Industrial Average fell 0.2%. Nvidia’s report, which will come out later in the day, will put stock markets in Hong Kong, China and Taiwan on alert as these three regions contributed over 45% of the company’s revenues in the third quarter. Nvidia was down about 1.5% in premarket trading following a tumble of 4.4% Tuesday, which weighed down the entire sector.