Seeing someone talking about FOLKS, waiting for a margin call before jumping in. It sounds quite rational, but I have to say—this brother might be waiting a long time. How many people can accurately catch the bottom? More realistically, before the margin call happens, the market has already risen. The trading market is so ironic; the worst thing isn't losing money yourself, but missing the chance to scoop up the bottom. So instead of calculating when others will get margin called, it's better to think about your own risk tolerance.