Asian stocks rose on Wednesday, tracking Wall Street's rally driven by renewed optimism over artificial intelligence ahead of the US Federal Reserve's rate decision and major tech earnings. Japan's Nikkei surged over 2 per cent to a new record, while MSCI's Asia-Pacific index excluding Japan gained 0.53 per cent and China's CSI300 climbed 0.74 per cent. South Korea's Kospi also hit an all-time high following upbeat results from Nvidia supplier SK Hynix. Wall Street closed at record highs on Tuesday as Nvidia revealed $500 billion in AI chip bookings and plans to build seven supercomputers for the US Energy Department, while Microsoft secured a 27 per cent stake in OpenAI after its restructuring. Investors awaited earnings from Microsoft, Alphabet, and Meta, and a widely expected 25-basis-point US rate cut. Markets are also watching for any signals that the Fed might end its quantitative tightening programme. The dollar steadied, with the euro down 0.2 per cent at $1.1630, while the yen weakened to 152.47 per dollar ahead of Thursday's Bank of Japan meeting. Attribution: Reuters