Global indices, including the FTSE 100, S&P 500, and Nikkei 225, are facing early pressure following Nvidia's recent earnings report, contributing to a cautious market sentiment. The FTSE 100 has fluctuated around 8100, with resistance noted below 8200 and support at 8300. The S&P 500 shows indecision, maintaining a short-term low near 5850, while the Nikkei 225 has dropped, with critical support at 37,700.