今日财经要闻TOP10|2026年1月21日

Group 1 - Pinduoduo was fined 100,000 yuan by the Shanghai tax authority for failing to submit tax information as required by regulations [1] - The tax violation involved not reporting tax information for platform operators and employees for the third quarter of 2025 [1] - Pinduoduo was given a deadline to rectify the issue but failed to comply, leading to the fine [1] Group 2 - The U.S. stock market saw a decline, with the Dow Jones falling by 1.82%, Nasdaq by 2.42%, and S&P 500 by 2.07% [7] - Major tech stocks like Nvidia, Google, Apple, and Amazon experienced significant drops, with Nvidia falling over 4% [7] - The market's downturn was attributed to rising geopolitical tensions and increased tariffs proposed by the U.S. government [7] Group 3 - The Science and Technology Innovation Board (STAR Market) index surged by 3.53%, driven by strong performances in the gold and semiconductor sectors [10] - The total trading volume in the Shanghai and Shenzhen markets reached 26,236 billion yuan, indicating a slight decrease from the previous day [10] - Gold and resource stocks saw substantial gains, with several stocks hitting their daily limit up [10] Group 4 - The number of 5G users in China has exceeded 1.2 billion, with 483.8 million 5G base stations built [15] - China holds a 42% share of global essential patent declarations for 5G technology [15] - The second phase of 6G technology trials has recently commenced, following the completion of the first phase [15]