U.S. stock futures posted modest gains amid anticipation of Nvidia's earnings report, set to be released after the market closes. This tech giant's results are seen as a key indicator of market health and AI industry trends. Investors are also monitoring companies like MongoDB, nCino, and Snowflake. The broader market remains cautious as Wall Street waits for fresh earnings data to gauge economic strength and future growth prospects. The day reflects ongoing market cautious optimism amid key corporate reports.