Wall Street's three main indexes opened higher on Tuesday, buoyed by gains in technology and consumer discretionary stocks, as investors looked ahead to a busy week of corporate earnings reports. The S&P 500 rose 0.44% at the open, to 4,183.97. The Nasdaq Composite gained 0.74%, to 14,192.48. The Dow Jones Industrial Average added 0.22%, to 34,171.39. Investors are expected to focus on corporate earnings this week, with major companies like Tesla, AT&T, and United Airlines set to report their quarterly results. Earnings season is seen as a key indicator of the health of the U.S. economy. Among the early gainers, Tesla shares rose 3.3% after the electric car maker reported record quarterly deliveries. Apple shares gained 1.2%, while Amazon shares added 0.7%. Overall, the market sentiment remained positive, with investors betting on continued economic growth and a dovish stance from the Federal Reserve.