The annual income on an investment divided by its current market value. Running yield is a calculation that takes the income from dividends (for stocks) or coupons (for bonds) and divides the income by the market price of the security; the value is expressed as a percentage. A security's running yield is sometimes used by investors to make buying and selling decisions and investors can use running yields to compare the expected lifetime income yield of various securities. "Running" refers to a continuous investment, such as a bond held to maturity.