It looks like Cullen/Frost Bankers, Inc. ( NYSE:CFR ) is about to go ex-dividend in the next three days. The ex-dividend date is usually set to be one business day before the record date which is the cut-off date on which you must be present on the company's books as a shareholder in order to receive the dividend. The ex-dividend date is of consequence because whenever a stock is bought or sold, the trade takes at least two business day to settle. This means that investors who purchase Cullen/Frost Bankers' shares on or after the 28th of February will not receive the dividend, which will be paid on the 15th of March.