As earnings season gets underway, markets expect robust quarterly results again from S&P 500 companies.
The blended net profit margin for the S&P 500 for the third quarter is expected to be 11.6 percent, according to data provider FactSet. If that holds true, it will be the second-highest net profit margin in the last 10 years. The highest level was 11.8 percent, which was reached in the second quarter of this year.