Earnings season is well underway, and so far corporate profits for the second quarter have been pretty good. Surprisingly good, actually. Of the companies in the S&P 500 index that have reported results so far, most have exceeded analysts’ expectations. Plenty of earnings news is still to come, including reports tomorrow from biggies like Apple, Archer Daniels Midland and Allstate. What can corporate health tell us about the strength of the economy?

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