S&P 500 futures are down 0.4%. Dow Jones Industrial Average futures are off 0.2%. Nasdaq 100 futures are dipping 0.6%. On Tuesday, the Dow Jones Industrial Average fell 626 points, or 1.51%, to 40,937,

U.S. stock indexes are losing ground in afternoon trading Wednesday as Wall Street adds to its losses a day after the market’s worst skid in a month. The S&P 500 was down 0.4% following a 2.1% drop a day earlier.

U.S. stocks are slumping Tuesday following a disappointingly weak start to a week full of updates on the economy. The S&P 500 was 1.3% lower in morning trading, coming off a winning week that had carried it to the cusp of its all-time high .

Chip giant Nvidia Corp. grabbed plenty of headlines last week when it announced its results. This week, attention will be focused on Broadcom Inc. The chip maker reports its results Thursday with [Wal