1月7日上证50（000016）指数跌0.43%，成份股中国石油（601857）领跌

Core Viewpoint - The Shanghai Stock Exchange 50 Index (000016) closed at 3145.12 points on January 7, with a decline of 0.43% and a trading volume of 169.3 billion yuan, indicating a low turnover rate of 0.31% [1] Group 1: Index Performance - On the day, 15 constituent stocks of the index rose, with Zhongwei Company leading the gains at 6.88%, while 34 stocks fell, with China Petroleum leading the declines at 3.6% [1] Group 2: Capital Flow - The net outflow of main funds from the constituent stocks of the index totaled 4.226 billion yuan, while retail investors saw a net inflow of 2.215 billion yuan and speculative funds had a net inflow of 2.011 billion yuan [2]