SINGAPORE: Asian stocks sank on Wednesday (Jul 29), extending a vicious selloff as anxiety about artificial intelligence (AI) valuations and whether the massive spending will deliver returns rattled investors ahead of crucial earnings from big tech firms and a United States Federal Reserve policy decision.

(Bloomberg) -- Asian equities declined as renewed concerns over artificial-intelligence spending fueled another selloff in chipmakers.

HONG KONG - The Kospi in South Korea plunged 10% as tech shares took a battering on another black day for Asian stock markets, with a report of a breakthrough in China’s chip…