U.S. stocks edged lower Tuesday, with the S&P 500 ending an eight-day winning streak, as investors weighed disappointing earnings from The Coca-Cola Company (NYSE: KO).

After the bell Wednesday, Intel Corp. (Nasdaq: INTC) is expected to report second-quarter earnings per share of 39 cents on revenue of $12.89 billion, according to analysts polled by Reuters, compared with a gain of 54 cents a share on revenue of $13.50 billion in the year-ago period.

International Business Machines Corp. (NYSE: IBM) also reports second-quarter results after the market closes Wednesday, and analysts polled by Zacks Investment Research see a profit of $3.78 a share, a rise from $3.51 per share a year ago. Revenue is expected to fall 2 percent year over year to $25 billion for the quarter.

After the bell Thursday, tech giants Google Inc. and Microsoft Corp. are scheduled to release results.

Google Inc. (Nasdaq: GOOG) is forecast to report second-quarter EPS of $10.78 on revenue of $14.45 billion, compared with a profit of $10.12 a share on revenue of $9.61 billion in the year-ago period, according to Reuters.

Software giant Microsoft Corp. (Nasdaq: MSFT) is expected to report fourth-quarter EPS of 75 cents on revenue of $20.79 billion, based on Reuters estimates, compared with a profit of 67 cents a share on revenue of $18.06 billion in the year-ago period. 

Also on the earnings front for Wednesday, Bank of America Corp. (NYSE: BAC) issues results before the bell, while American Express Co. (NYSE: AXP) reports results after the market closes. 

The Dow Jones industrial average fell 32.41 points, or 0.21 percent, Tuesday to close at 15,451.85. The S&P 500 Index lost 6.24 points, or 0.37 percent, to finish at 1,676.26. The Nasdaq Composite Index fell 8.99 points, or 0.25 percent, to close at 3,598.50.