Stock futures held steady in overnight trading on Monday as investors braced for another batch of corporate earnings.Futures on the Dow Jones Industrial Average and S&P 500 futures were little changed. Nasdaq 100 futures inched up 0.1%.Shares of Tesla fell 2.5% in extended trading even after the electric carmaker posted record net income of $438 million. Tesla also beat earnings and revenue expectations handily, boosted by sales of bitcoin and regulatory credits.The first-quarter earnings season kicks into high gear on Tuesday with key companies such as Alphabet, Microsoft, Starbucks and AMD reporting after the bell.So far, with about a third …