The social network is reviewing its products and data policies to find further ways to protect users from being exploited , after reports that Cambridge Analytica, a political consultant, obtained information on as many as 87 million people without their permission.
Unusual volume shows something has likely happened in the stock-such as a news release or traders have become anxious or euphoric about the stock's potential. Alibaba Group Holding Limited , through its subsidiaries, operates as an online and mobile commerce company in the People's Republic of China and internationally.