Ex-rights和Ex-dividend都是股票用语。

Ex这里全称是exclude，除去的意思。

Ex-rights（The term ex-rights refers to shares of stock that are trading but no longer have rights attached to them. Rights, in this context, refer to the opportunity to purchase more shares of a new issue or offering at a given price.）

即股票除权，除权是由于公司股本增加，每股股票所代表的企业实际价值（每股净资产）有所减少，需要在发生该事实之后从股票市场价格中剔除这部分因素，而形成的剔除行为。

Ex-dividend（Ex-dividend is when a company's dividend allocations have been specified.）

即股票除息。股票发行企业在发放股息或红利时，需要事先进行核对股东名册、召开股东大会等多种准备工作，于是规定以某日在册股东名单为准，并公告在此日以后一段时期为停止股东过户期。停止过户期内，股息红利仍发入给登记在册的旧股东，新买进股票的持有者因没有过户就不能享有领取股息红利的权利，这就称为除息。同时股票买卖价格就应扣除这段时期内应发放股息红利数，这就是除息交易。

除权或除息的产生系因为投资人在除权或除息日之前与当天购买者，两者买到的是同一家公司的股票，但是内含的权益不同，显然相当不公平。因此，必须在除权或除息日当天向下调整股价，成为除权或除息参考价。

以下为相关双语示例，供参考：

In the event of any ex-rights or ex-dividend netting of share prices during the effective period for the warrants, the exercise price and exercise ratio of the warrants will be adjusted accordingly. 

在认股权证存续期内，若股票除权、除息，将对认股权证的行权价格、行权比例作相应调整。 

As at the close of trading on 12 February 2010, a total of 23,348,590 “中兴 ZXC1” Warrants had been exercised at an exercise ratio of 1:0.922 and an adjusted exercise price of RMB42.394 per share on an ex-rights and ex-dividend basis to subscribe for 21,523,441 A shares, raising proceeds of approximately RMB912 million.

截至2010年2月12日交易时间结束，共计23,348,590份「中兴ZXC1」认股权证行权，行权比例为1：0.922，经除权除息调整后的认股权证行权价格为42.394元/股，共成 功认购21,523,441股A股，募集资金约9.12亿元人民币。