Asia-Pacific markets traded mixed Tuesday in the absence of any major triggers, after two key Wall Street indexes rose overnight on tech optimism.

Amazon shares rising 4% on a $38 billion deal with OpenAI, a move that will use hundreds of thousands of Nvidia’s graphics processing units. Nvidia also gained about 2% after it secured export licenses to ship its chips to the United Arab Emirates.

Australia’s S&P/ASX 200 fell 0.7% as investors awaited the Reserve Bank of Australia’s policy decision.

Japan’s Nikkei 225 was 0.25% higher, and the Topix added 0.52%. South Korea’s Kospi fell 1.29% while the small-cap Kosdaq climbed 0.24%.

Kospi has gained in 12 of the past 15 sessions, hitting multiple fresh highs this month on the back global AI tailwinds as well as local structural changes that are steadily eroding the long-standing “Korea discount.”

Hong Kong’s Hang Seng index edged 0.23% higher, while mainland’s CSI 300 was flat.

Overnight in the U.S., the tech-heavy Nasdaq advanced 0.46%, while the S&P 500 traded up 0.17%. The Dow Jones Industrial Average lagged, falling 0.48%.

— CNBC’s Sean Conlon and Fred Imbert contributed to this report.