Arbitrage Pricing Theory - APT

Dictionary Says

Definition of 'Arbitrage Pricing Theory - APT'


An asset pricing model based on the idea that an asset's returns can be predicted using the relationship between that same asset and many common risk factors. Created in 1976 by Stephen Ross, this theory predicts a relationship between the returns of a portfolio and the returns of a single asset through a linear combination of many independent macro-economic variables.

Investopedia Says

Investopedia explains 'Arbitrage Pricing Theory - APT'


The arbitrage pricing theory (APT) describes the price where a mispriced asset is expected to be. It is often viewed as an alternative to the capital asset pricing model (CAPM), since the APT has more flexible assumption requirements. Whereas the CAPM formula requires the market's expected return, APT uses the risky asset's expected return and the risk premium of a number of macro-economic factors. Arbitrageurs use the APT model to profit by taking advantage of mispriced securities. A mispriced security will have a price that differs from the theoretical price predicted by the model. By going short an over priced security, while concurrently going long the portfolio the APT calculations were based on, the arbitrageur is in a position to make a theoretically risk-free profit.

comments powered by Disqus
Hot Definitions
  1. Earnings Call

    A conference call between the management of a public company, analysts, investors and the media to discuss the financial results during a given reporting period such as a quarter or a fiscal year.
  2. Legal Monopoly

    A company that is operating as a monopoly under a government mandate. A legal monopoly offers a specific product or service at a regulated price and can either be independently run and government regulated, or government run and regulated.
  3. Closed-End Fund

    A closed-end fund is a publicly traded investment company that raises a fixed amount of capital through an initial public offering (IPO). The fund is then structured, listed and traded like a stock on a stock exchange.
  4. Payday Loan

    A type of short-term borrowing where an individual borrows a small amount at a very high rate of interest. The borrower typically writes a post-dated personal check in the amount they wish to borrow plus a fee in exchange for cash.
  5. Securitization

    The process through which an issuer creates a financial instrument by combining other financial assets and then marketing different tiers of the repackaged instruments to investors.
  6. Economic Forecasting

    The process of attempting to predict the future condition of the economy. This involves the use of statistical models utilizing variables sometimes called indicators.
Trading Center