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Investopedia explains 'Stock Basher'

This is an illegal activity that can carry significant legal repercussions. The basher generally benefits on how effective the negative rumors are, which can dramatically affect a stock's value. If an investor believes the false claims, he or she may sell off the stock at the higher price before it falls. The basher will then purchase the stock and ride out the gains.

Read more: http://www.investopedia.com/terms/s/stockbash...z1zWwIFTC9