Stock market today: Stocks turn upbeat with Big Tech earnings in view

US stocks opened higher on Monday, attempting to rebound from their worst week of the year as investors braced for a flood of corporate earnings. The S&P 500 (^GSPC) gained 0.5% after closing below the 5,000 level on Friday for the first time since February amid six straight days of losses. The Dow Jones Industrial Average (^DJI) also added 0.5%, while the tech-heavy Nasdaq Composite (^IXIC) put on 0.6%. After its recent battering, the market rally has sunk to its most fragile point in months, and this week will be critical to determining whether the malaise continues. Tech stocks are…