giving a broker a choice between two courses of action, either to buy or sell, never both. Execution of one course automatically eliminates the other. An example is a combination buy limit/ buy stop order, where the buy limit is below the current market and the buy stop is above. If the order is for one unit of trading, when one part of the order is executed on the occurrence of one alternative, the order on the other alternative is to be treated as cancelled. If the order is for an amount of more than one unit of trading, the number of units executed determines the amount of the alternative order to be treated as cancelled. Sometimes known as One Cancels the Other. Also see: Either-or order. American Association of Individual Investors (AAII) A not-for-profit organization to educate individual investors about stocks, bonds, mutual funds, and other financial instruments. American Depositary Receipt (ADR) Certificates issued by a US depository bank, representing foreign shares held by the bank, usually by a branch or correspondent in the country of issue. One ADR may represent a portion of a foreign share, one share or a bundle of shares of a foreign corporation. If the ADR's are "sponsored," the corporation provides financial information and other assistance to the bank and may subsidize the administration of the ADR. "Unsponsored" ADRs do not receive such assistance. ADRs are subject to the same currency, political, and economic risks as the underlying foreign share. Arbitrage keeps the prices of ADRs and underlying foreign shares, adjusted for the SDR/ordinary ratio essentially equal. American depository shares (ADS) are a similar form of certification. American Depositary Receipt Fees Fees associated with the creating or releasing of ADRs from ordinary shares, charged by the commercial banks with correspondent banks in the international sites. American Depositary Receipt Ratio The number of ordinary shares into which an ADR can be converted. American Depositary Share (ADS) Foreign stock issued in the US and registered in the ADR system. American option An option that may be exercised at any time up to and including the expiration date. Related: European option American shares Securitiescertificatesissued in the US by a transfer agent acting on behalf of the foreign issuer. The certificates represent claims to foreign equities. American Stock Exchange (AMEX) Stock exchange with the third highest volume of trading in the US. Located at 86 Trinity Place in downtown Manhattan. The bulk of trading on AMEX consists of index options (computer technology index, institutional index, major market index) and shares of small to medium-sized companies are predominant. Recently merged with Nasdaq See: Curb. American-style option An optioncontract that can be exercised at any time between the date of purchase and the expiration date. Most exchange-traded equity options are American style. Amman Financial Market (AFM) Established in 1976, the AFM is the only stock exchange in Jordan. Amman Stock Exchange The only agency authorized as a formal market for tradingsecurities in Jordan. Amortization The repayment of a loan by installments. Amortization factor The pool factor implied by the scheduled amortization assuming