By Chuck Mikolajczak
NEW YORK (Reuters) - Stocks were on track for a second straight decline on Friday as earnings from General Electric and Microsoft rekindled worries about corporate profits, weighing on the technology and industrial sectors.
The sell-off occurred on the 25th anniversary of the stock market crash of 1987 - known as Black Monday - when the Dow Jones industrial average plummeted 22.6 percent - its worst single-day percentage loss.
Earnings on Friday from large multinationals underscored the effect of the global economic slowdown. General Electric Co
The S&P 500 appeared to be once again testing its 50-day moving average, seen as a key support level that could trigger more selling if convincingly broken, after the benchmark index managed to bounce off that average earlier in the week.
The benchmark S&P 500 index has been range-bound since the September 13 announcement by the U.S. Federal Reserve of its latest plan to stimulate the economy. During that period, the S&P 500 has moved between near five-year highs and the 50-day moving average.
"It does seem we are in this range-bound area, still up near the highs, which is good, but these earnings better start coming in better or we will be in for more pain," said Ryan Detrick, senior technical strategist at Schaeffer's Investment Research in Cincinnati, Ohio.
"When you get to the top of a range like we were on the S&P, you can definitely see where you work up and get beat down really fast, and clearly when you get the news driving it, that is what definitely can happen."
The beat rate for revenue forecasts so far is 41.4 percent, trailing both the 55 percent average over the past four quarters and the long-term average of 62 percent, according to Thomson Reuters data.
McDonald's Corp
The Dow Jones industrial average <.DJI> lost 188.29 points, or 1.39 percent, to 13,360.65. The Standard & Poor's 500 Index <.SPX> dropped 22.59 points, or 1.55 percent, to 1,434.75. The Nasdaq Composite Index <.IXIC> fell 63.59 points, or 2.07 percent, to 3,009.28.
Despite the day's declines, the S&P 500 has advanced 0.4 percent so far this week. The Dow is up 0.2 percent, but the Nasdaq is off 1.1 percent for the week. Each of the three major U.S. stock indexes advanced for the first three days of the week as corporate earnings appeared to be better than initially expected.
On Thursday, a string of earnings disappointments, including surprisingly weak results from Google
Microsoft Corp
"Tech is obviously very sensitive to the U.S. economy and global economy, for that matter, and the fact they are missing consistently is bringing up a 'sell first, ask questions later' mentality," Detrick said.
But diversified U.S. manufacturer Honeywell International Inc
The S&P industrials sector index <.GSPI> tumbled 1.6 percent, while the S&P information technology sector index <.GSPT> lost 1.9 percent.
Of the 116 S&P 500 companies that have reported results so far in this earnings season, 60 percent have exceeded analysts' estimates. Earnings are expected to drop 1.8 percent in the third quarter from a year ago, according to Thomson Reuters data, compared with a forecast calling for a drop of 2.3 percent earlier in the week.
Semiconductors added to the weakness, with a 4.9 percent gain in SanDisk Corp
The PHLX semiconductor index <.SOX> lost 2.6 percent.
(Reporting by Chuck Mikolajczak; Editing by Jan Paschal)
(This story was refiled to fix a typo in the headline)