"台阶规则"要求投资者通过证券交易所的证券交易持有或者通过协议、其他安排与他人共同持有一上市公司已发行股份达到5% 以后，每增加或者减少持有一定比例时，均需暂停买卖该公司的股票，且需依法定要求公开其持股变化况。我国《证券法》现规定增加或减少的" 一定比例"亦为5% 。

 

法律设置"台阶规则"的目的在于，控制大股东买卖股票的节奏，让上市公司及其大股东的有关信息作广泛传播和充分的消化，使投资者有时间慎重考虑作出继续持有或立即售出的选择。

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