I would take it that this would be covered under our Gestión Financiera 1 and I would attempt to look up an explanation here. Bonds are certificates of debt that are sold to finance an organization or an idea. A bond is essentially a loan that its owner gives to the issuer in exchange for a promise of consistent interest payments and the repayment of the initial purchase amount of the bond at maturity. Most bonds maintain their face value for a set period of time along with an interest rate, allowing the owner of the bond to profit. Therefore, the returns originate from periodic interest payments and the repayment of the bond upon maturity.