Ex-dividend dates are when company shares stop trading with their current dividend payouts in preparation for those companies to announce new ones. Usually, a company's ex-dividend date falls one business day before its record date. Investors should keep this in mind when purchasing stocks because buying them on or after ex-dividend dates does not qualify them to receive the declared payment. Newly declared dividends go to shareholders who have owned that stock before the ex-dividend date. Typically, companies will announce and implement new dividend yields on a quarterly basis.

Over the past year, Eaton Vance Duration has experienced no change regarding its dividend payouts and a downward trend regarding its yields. Last year on April 9, 2021 the company's payout was $0.1, which has returned to its value today. Eaton Vance Duration's dividend yield last year was 9.5%, which has since decreased by 0.44%.
Companies use dividend yields in different strategic ways. Some companies may opt to not give yields altogether to reinvest in themselves. Other companies may opt to increase or decrease their yield amounts to control how their shares circulate throughout the stock market.