我的意思是没有制衡,买的时候都往上买,不想买了谁都不要。 In US market, when the stock is falling, some shorts will come out to close their postion and support the market. In addition, ...

wang-lao-wu (钻石王老五)
Institutional players usually have option positions. They may purposely buy up or sell down some stocks to make profits in their option positions.
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