HONG KONG—A new technology stock benchmark that includes China’s two most valuable companies made its debut on Monday, falling more than Hong Kong’s broader stock market as it sought to give investors a better read on the tech sector’s growth and relative performance. The Hang Seng Tech Index, which tracks 30 technology companies listed in the city, climbed as much as 2.2% on Monday morning before ending the day down 1.3%, versus a 0.4% decline in the broader 50-stock Hang Seng Index. ...

Tencent Holdings Ltd. proposed to buy out other investors in its search-engine affiliate Sogou Inc. for about $2.1 billion, in what could become the latest instance of a Chinese technology company abandoning the U.S. stock market. The proposal adds to a flurry of deal-making in recent months involving New York-listed Chinese internet firms. Buyout offers have emerged for several smaller groups, while three larger companies, including Alibaba Group Holding Ltd., have secured secondary listings...

Acquisition of affiliate would mark latest exit by a Chinese tech firm from U.S. stock listing Tencent Holdings Ltd. proposed to buy out other investors in its search-engine affiliate Sogou Inc. for about $2.1 billion, in what could become the latest instance of a Chinese technology company abandoning the U.S. stock market. The proposal adds to a flurry of deal-making in recent months involving New York-listed Chinese internet firms. Buyout offers have emerged for several smaller groups,...

China's currency Monday fell past the psychologically important level of 7 yuan to the dollar, days after President Trump threatened to broaden U.S. tariffs to cover essentially all Chinese imports. The depreciation is likely to exacerbate the U.S.-China trade dispute. President Trump and many other U.S. officials have long accused China of weakening the yuan to make its exports cheaper and gain an unfair advantage in trade. Beijing has denied doing so. Even so, China's central bank suggested...

China's currency Monday fell past the psychologically important level of 7 yuan to the dollar to a record low, days after President Trump threatened to broaden U.S. tariffs to cover essentially all Chinese imports. The depreciation is likely to exacerbate the U.S.-China trade dispute. President Trump and many other U.S. officials have long accused China of weakening the yuan to make its exports cheaper and gain an unfair advantage in trade. Beijing has denied doing so. Even so, China's...