Nvidia beats Q1 revenue estimates, leading to a 5% increase in share value and a significant rise in US chip stocks. CEO Jensen Huang's optimistic outlook on AI demand boosted investor confidence despite disappointing sales guidance. Analysts upgraded Nvidia's stock and raised price targets. This positive performance impacted other US chipmakers, including Micron Technology, Super Micro Computer, Broadcom, Marvel Technology, Qualcomm, Advanced Micro Devices, Intel, and Taiwan Semiconductor Manufacturing. The Philadelphia Semiconductor Index is down 2.9% year-to-date, with challenges like the export ban on advanced H20 chips affecting Nvidia's operations. The market received a boost from Nvidia's earnings report, leading to favorable tariff news. The S&P 500 Index remains volatile but shows a moderately bullish trend, with analysis including gaps on the SPX chart, McMillan volatility band sell signal, and equity-only put-call ratios.