summing up an abbreviation is a shortening of a word or a phrase an acronym is an abbreviation that forms a word an initialism is an abbreviation that uses the first letter of each word in the phrase thus some but not all initialisms are acronyms
ROI, or return on investment, is a common business term used to identify past and potential financial returns. Managers and executives look to the ROI of a project or endeavor because this indicates how successful a venture will be.
How to Calculate Investment Income. Investment income can come from a number of sources, such as dividends, capital gains, interest payments and any other return made from an investment. The percentage of return you make from each investment vehicle is called a yield. A yield is calculated by dividing income by the amount of the investment.