According to Yonhap, HKET and Sina Finance, Asian equities were mixed on Wednesday, with Korean chipmakers powering Seoul higher while Hong Kong retreated and Japan stayed dark for a public holiday.

Japan's market was closed Wednesday for the Autumnal Equinox Day holiday, with cash trading set to resume Thursday.

Seoul's KOSPI extended its winning streak to a fourth session, adding 63.01 points, or 0.9 percent, to close at 7,080.92, tracking the Nasdaq Composite's back-to-back record closes. The index had opened nearly 2 percent higher before paring gains as foreign and individual investors booked profits. Market bellwether Samsung Electronics rose 3.25 percent to 285,500 won, chip rival SK hynix gained 1.2 percent to 1.86 million won, and SK Square jumped 5.03 percent. Daishin Securities analyst Lee Kyung-min said foreign net selling and institutional outflows capped the index's advance. The market will be closed Thursday and Friday for the Chuseok holiday.

Hong Kong stocks fell, with the Hang Seng Index down 253.63 points, or 1.01 percent, to 24,834.12, slipping back below 25,000, while the Hang Seng Tech Index lost 1.33 percent and the Hang Seng China Enterprises Index eased 1.06 percent. Tech names led the retreat, with Alibaba down 4.36 percent to HK$109.80 and Xiaomi off 3.75 percent; AI-application play Zhipu tumbled 12.40 percent. Bucking the trend, PCB-related Kingboard Laminates advanced more than 11 percent, and mainland property developer Ronshine China surged more than 22 percent on talk of a nationwide mortgage interest-subsidy scheme.

Taiwan's TAIEX rose 357.12 points, or 0.75 percent, to close at 48,157.29, holding above the 48,000 mark after touching an intraday high near 48,341. TSMC gained 1.63 percent to close at NT$2,500.

In mainland China, the Shanghai Composite fell 0.39 percent to 3,936.52, ending a three-session winning run, while the Shenzhen Component dropped 0.64 percent to 13,636.07 and the ChiNext Index slid 0.6 percent to 3,379.61. Property and pharmaceutical shares gained, while media stocks led decliners. Combined turnover on the two bourses shrank to 1.76 trillion yuan from 2.14 trillion yuan the prior session.