What is Capital Asset Pricing Model ?

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The Capital Asset Pricing Model (CAPM) describes the relationship between systematic risk, or the general perils of investing, and expected return for assets, particularly stocks. It is a finance model that establishes a linear relationship between the required return on an investment and risk.CAPM is based on the relationship between an asset's beta, the risk-free rate (typically the Treasury bill rate), and the equity risk premium, or the expected return on the market minus the risk-free rate.CAPM evolved as a way to measure this systematic risk. It is widely used throughout finance for pricing risky securities and generating expected returns for assets, given the risk of those assets and cost of capital.

Definition

The Capital Asset Pricing Model (CAPM) describes the relationship between systematic risk and expected return for assets, particularly stocks. It is a financial model that establishes a linear relationship between the required return on an investment and its risk.

Origin

CAPM was developed in the 1960s by financial scholars William Sharpe, John Lintner, and Jan Mossin. It is based on Harry Markowitz's Modern Portfolio Theory and aims to provide investors with a method to measure asset risk and expected return.

Categories and Features

The core of CAPM is its formula: Expected Return = Risk-Free Rate + Beta × (Market Expected Return - Risk-Free Rate). Here, the beta coefficient measures an asset's volatility relative to the market. CAPM assumes that markets are efficient, investors are rational, and there are no transaction costs.

Case Studies

Case 1: Suppose a company's stock has a beta of 1.2, a risk-free rate of 3%, and a market expected return of 8%. According to CAPM, the expected return for this stock is 3% + 1.2 × (8% - 3%) = 9%. Case 2: Another company's stock has a beta of 0.8 under the same conditions, resulting in an expected return of 3% + 0.8 × (8% - 3%) = 7%. These calculations help investors assess the risk-adjusted returns of different stocks.

Common Issues

Investors often misunderstand the assumptions of CAPM, such as market efficiency and investor rationality. Additionally, CAPM may underestimate or overestimate risk and return under actual market conditions, especially during high market volatility.

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A liquidity trap is an adverse economic situation that can occur when consumers and investors hoard cash rather than spending or investing it even when interest rates are low, stymying efforts by economic policymakers to stimulate economic growth.The term was first used by economist John Maynard Keynes, who defined a liquidity trap as a condition that can occur when interest rates fall so low that most people prefer to let cash sit rather than put money into bonds and other debt instruments. The effect, Keynes said, is to leave monetary policymakers powerless to stimulate growth by increasing the money supply or lowering the interest rate further.A liquidity trap may develop when consumers and investors keep their cash in checking and savings accounts because they believe interest rates will soon rise. That would make bond prices fall, and make them a less attractive option.Since Keynes' day, the term has been used more broadly to describe a condition of slow economic growth caused by widespread cash hoarding due to concern about a negative event that may be coming.

Liquidity Trap

A liquidity trap is an adverse economic situation that can occur when consumers and investors hoard cash rather than spending or investing it even when interest rates are low, stymying efforts by economic policymakers to stimulate economic growth.The term was first used by economist John Maynard Keynes, who defined a liquidity trap as a condition that can occur when interest rates fall so low that most people prefer to let cash sit rather than put money into bonds and other debt instruments. The effect, Keynes said, is to leave monetary policymakers powerless to stimulate growth by increasing the money supply or lowering the interest rate further.A liquidity trap may develop when consumers and investors keep their cash in checking and savings accounts because they believe interest rates will soon rise. That would make bond prices fall, and make them a less attractive option.Since Keynes' day, the term has been used more broadly to describe a condition of slow economic growth caused by widespread cash hoarding due to concern about a negative event that may be coming.

Liquidity Crisis

A liquidity crisis is a financial situation characterized by a lack of cash or easily-convertible-to-cash assets on hand across many businesses or financial institutions simultaneously.In a liquidity crisis, liquidity problems at individual institutions lead to an acute increase in demand and decrease in supply of liquidity, and the resulting lack of available liquidity can lead to widespread defaults and even bankruptcies.

Liquidity Crisis

A liquidity crisis is a financial situation characterized by a lack of cash or easily-convertible-to-cash assets on hand across many businesses or financial institutions simultaneously.In a liquidity crisis, liquidity problems at individual institutions lead to an acute increase in demand and decrease in supply of liquidity, and the resulting lack of available liquidity can lead to widespread defaults and even bankruptcies.

Liquidity Event

A liquidity event is an acquisition, merger, initial public offering (IPO), or other action that allows founders and early investors in a company to cash out some or all of their ownership shares.A liquidity event is considered an exit strategy for an illiquid investment or equity with little or no market to trade on. Founders of a firm push toward a liquidity event, and investors like venture capital (VC) firms, angel investors, or private equity firms expect one within a reasonable amount of time after initially investing capital.

Liquidity Event

A liquidity event is an acquisition, merger, initial public offering (IPO), or other action that allows founders and early investors in a company to cash out some or all of their ownership shares.A liquidity event is considered an exit strategy for an illiquid investment or equity with little or no market to trade on. Founders of a firm push toward a liquidity event, and investors like venture capital (VC) firms, angel investors, or private equity firms expect one within a reasonable amount of time after initially investing capital.

Liquid Alternatives

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Liquid Alternatives

Liquid alternative investments (or liquid alts) are mutual funds or exchange-traded funds (ETFs) that aim to provide investors with diversification and downside protection through exposure to alternative investment strategies. These products' selling point is that they are liquid, meaning that they can be bought and sold daily, unlike traditional alternatives which offer monthly or quarterly liquidity. They come with lower minimum investments than the typical hedge fund, and investors don't have to pass net-worth or income requirements to invest. Critics argue that the liquidity of so-called liquid alts will not hold up in more trying market conditions; most of the capital invested in liquid alts has entered the market during the post-financial crisis bull market. Critics also contend that the fees for liquid alternatives are too high. For proponents, though, liquid alts are a valuable innovation because they make the strategies employed by hedge funds accessible to retail investors.

Zero-Coupon Convertible

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Zero-Coupon Convertible

A zero-coupon convertible is a fixed income instrument that combines the features of a zero-coupon bond with that of a convertible bond.Due to the zero-coupon feature, the bond pays no interest and is therefore issued at a discount to par value, while the convertible feature means that bondholders have the option to convert bonds into common stock of the issuer at a certain conversion price.

Zero-Investment Portfolio

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Zero-Investment Portfolio

A zero-investment portfolio is a collection of investments that has a net value of zero when the portfolio is assembled, and therefore requires an investor to take no equity stake in the portfolio. For instance, an investor may short sell $1,000 worth of stocks in one set of companies, and use the proceeds to purchase $1,000 in stock in another set of companies.