Dividend stocks: Power Finance Corporation (PFC), Nalco, and 38 other companies are set to trade ex-date next week. This means that investors who own shares in these companies before the ex-date will be eligible to receive the upcoming dividend payment. It is important for investors to keep track of ex-dates to ensure they qualify for dividends. Some of the companies included in the list of 40 ex-date stocks are well-known names in the market. Make sure to mark your calendar if you own shares in any of these companies to take advantage of the dividends being distributed.