The broad-based S&P 500 index rose 0.6 percent, and the tech-heavy Nasdaq Composite Index rose 1.2 percent. The Dow Jones Industrial Average closed unchanged, CNBC reports.
Since AI company Anthropic filed for an IPO on Monday, the sector has regained confidence and optimism.
Several heavily AI-linked stocks with significant index weightings continued to rise. Nvidia - the world's most valuable listed company - rose 0.9 percent, Broadcom 4 percent, Micron 2.8 percent and AMD 5.5 percent.
A barrel of North Sea oil (Brent) costs $113.90 after falling 1.6 percent during the day.
The US central bank is due to announce its policy rate on Wednesday. The market has priced in a 90.6 percent probability that the rate will be left unchanged in the range of 3.75–4.00 percent, according to research firm Fedwatch.
