By Chuck Mikolajczak
NEW YORK (Reuters) - U.S. stock index futures were lower on Monday, on the heels of a fourth week of losses for the benchmark S&P 500, as quarterly results from IBM (IBM.NY)disappointed.
IBM
The S&P 500 <.SPX> rallied on Friday to pare its weekly decline, but still notched its longest stretch of weekly losses since August 2011. The S&P index is now down 6.2 percent from its record high, hurt by worries about the health of the global economy, the spread of the Ebola virus and uncertainty about the next steps for the Federal Reserve.
Earnings season will ramp up significantly this week, with nearly 130 S&P 500 companies scheduled to report, include Apple Inc
According to Thomson Reuters data through Friday, of 81 companies in the S&P 500 that have reported quarterly earnings, 64 percent beat analyst expectations, slightly above the 63 percent average since 1994 but below the 67 percent rate for the past four quarters.
Third-quarter earnings are expected to grow 6.9 percent from a year ago, on revenue growth of 3.8 percent.
Halliburton
NewLink Genetics Corp
* S&P 500 e-minis
* Nasdaq 100 e-minis
* Dow e-minis <1YMc1> were down 90 points, or 0.55 percent, with 45,598 contracts changing hands.
(Editing by Bernadette Baum)