Knight-Swift Transportation Holdings Inc. (NYSE:KNX) stock is about to trade ex-dividend in three days. The ex-dividend date occurs one day before the record date which is the day on which shareholders need to be on the company's books in order to receive a dividend. It is important to be aware of the ex-dividend date because any trade on the stock needs to have been settled on or before the record date. Accordingly, Knight-Swift Transportation Holdings investors that purchase the stock on or after the 2nd of December will not receive the dividend, which will be paid on the 27th of December.