https://blog.wongcw.com/2021/02/02/robinhood%e5%9b%a0%e9%99%90%e5%88%b6gamestop%e7%ad%89%e8%82%a1%e7%a5%a8%e7%9a%84%e4%ba%a4%e6%98%93%e8%80%8c%e9%9d%a2%e8%87%a8%e6%95%b8%e5%8d%81%e8%b5%b7%e8%a8%b4%e8%a8%9f/