This is the CNBC Glossary of terms. There are terms for each of the letters. Purchase or sale of securities in any amount less than 100 shares. Also called net operating income or net operating loss. A type of fund that issues as many shares as investors demand.
Most mutual funds are open-end funds.
Open interest is the total number of futures contracts or options that have been opened with either a purchase or a sale and not yet closed by an offsetting opposite purchase or sale. A number of options on the same underlying stock that have the same strike price and expiration month. An agreement allowing an investor to buy or sell something, such as shares of stock, during a specific time for a specific price. Options are traded on several exchanges, including the Chicago Board of Options Exchange, the American Stock Exchange, the Philadelphia Stock Exchange, the Pacific Stock Exchange and the New York Stock Exchange. A term used to describe an option worth nothing if exercised immediately.