CAPITAL ASSET PRICING MODEL (CAPM) is an equilibrium model which describes the pricing of assets, as well as derivatives. The model concludes that the expected return of an asset (or derivative) equals the riskless return plus a measure of the assets non-diversiable risk ("beta") times the market-wide risk premium (excess expected return of the market portfolio over the riskless return). That is: expected security return = riskless return + beta x (expected market risk premium). It concludes that only the risk which cannot be diversified away by holding a well-diversified portfolio (e.g. the market portfolio) will affect the market price of the asset. This risk is called systematic risk, while risk that can be diversified away is called diversifiable risk (or "nonsystematic risk"). Unfortunately, The CAPM is more difficult to implement in practice than the binomial option pricing model or the Black-Scholes formula because to price an asset it requires measurement of the assets expected return and its beta. But, on the other hand, it also attempts to answer a more difficult question: The binomial option pricing model or the Black-Scholes formula asks what is the value of a derivative relative to the concurrent value of its underlying asset. The CAPM asks what is the value of an asset (or derivative) relative to the return of the market portfolio. Because of this, the option models are often referred to as "relative" valuation models, while the CAPM is considered an "absolute" valuation model. William Sharpe won the Nobel Prize in Economics principally for his role in the development of the CAPM.
CLEARANCE LETTER is a documented certification from a recognized authority that the cleared entity has satisfied certain requirements, payments, actions, etc.
PIGGYBACK, dependent upon usage, can mean: 1. On the back or shoulder or astraddle on the hip; 2. Two lenders participating in the same loan (piggyback loan) 3. Unauthorized access to a data processing system via an authorized users legitimate connection (piggyback entry) 4. Haul by railroad car; 5. SEC registration of existing holdings of shares in a corporation combined with an offering of new public shares (piggyback registration) 6. Rights that entitle an investor to register and sell his or her stock whenever the company conducts a public offering (piggyback rights).
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