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Home Categories Stock Trading Strategy & Education Non-valuable refers to the class of shares that do not allow the issuer to demand additional payment for shares from shareholders. NYSE Arca is an electronic order matching platform for stocks and commodities (ETPs). Odd lot trades refer to orders that include shares of less than a round lot of 100 shares. OEX, which is traded on the Chicago Board Options Exchange (CBOE), is the ticker used to denote options on the Standard & Poor’s 100 Index. The prospectus is a formal written offer to sell newly issued securities, which contains the necessary information for potential investors. In a compensating position, the trader takes an equivalent but opposite position to reduce the net position to zero. The purpose of a netting position is to limit or eliminate liabilities. Open interest is the total number of outstanding derivative contracts such as options or futures that have not been settled. Open protest was the main method of transmission of trading orders by stock traders. The first call represents the beginning of a regular trading session on the stock exchange. An option share is a share that lists options available for trading.