The earnings season is set to increase, with Tesla and Boeing among the 88 S & P 500 companies scheduled to report results. Other companies also set to report include United Airlines and Intel. UnitedHealth is expected to report earnings in the premarket, with a call scheduled for 8 a.m. This comes after the company posted a modest earnings beat and soft revenue guidance last quarter. Meanwhile, United Airlines is set for a call, with its bottom line expected to have grown around 20% from the year-earlier period. Boeing is also expected to post revenue growth of more than 10%. Tesla is set back to report after the bell and will hold a conference call at 5:30 p.m., while Intel is set after the close of the close.