https://www.reuters.com/article/us-naspers-tencent-holdings-stock/tencent-loses-24-billion-in-market-cap-after-naspers-selldown-idUSKBN1GZ08B >China's Tencent Holdings Ltd saw its shares down 4.51 percent at the midday trading break on Friday after the internet firm's largest shareholder, Naspers Ltd , said it would lower its stake for the first time in 17 years.