Tokyo stocks opened lower as gains were locked in after the Nikkei surpassed 40,000 points. The Nikkei stock index fell in the morning session as gains were locked in. Despite a slip from its peak, Japan's Nikkei ended flat due to dip-buying. Tokyo stocks ended mixed with gains locked in and chip issues being bought. The Nikkei extended its decline as tech stocks tracked a slump on Wall Street. Asian stocks dropped after global markets fell on a tech sell-off, while Indian shares were set for a muted start tracking Asian peers. Overall, Asian stocks were mixed with the Hang Seng and Straits Times rising, and the Kospi and Shanghai Composite falling, while European indices traded flat.