Tesla’s shares could get another jolt if the electric-car company delivers a surprise profit, making it eligible for the index

Tesla Inc.s stock rally has made it bigger than many behemoths of American industry, but the electric-car company has yet to achieve one major milestone: inclusion in the S&P 500.
Shares have more than tripled this year, driving Teslas market value to $291 billion, according to FactSet. The run has been fueled in part by optimism about the car makers earnings report due out late Wednesday. Some analysts forecast a surprise profit that would make the company eligible for inclusion in the benchmark stock-market gauge.