Lecture 3 Slides Flashcards
What is the risk-return tradeoff in finance?
The risk-return tradeoff is the concept that if you are to take on risk, you must be compensated for it.
How does the risk-return tradeoff apply to careers and investments?
The risk-return tradeoff applies to careers and investments by implying that taking on higher risk, such as performing dangerous jobs or investing in risky assets, should come with higher compensation or returns.
What is risk-shifting?
Risk-shifting is the process of transferring the risk of an activity, such as deep sea welding, to someone else who is willing to take on the risk, often by compensating them with a premium.
Why might society pay a premium for certain jobs?
Society might pay a premium for certain jobs to entice individuals to take on high-risk tasks that others are unwilling to do due to the associated dangers.
How can risk be measured in the context of a job or investment?
Risk in the context of a job can be measured by the likelihood of death or severe injury, while for an investment, it can be measured by the probability of loss.
What is a common measure of risk used in finance?
A common measure of risk used in finance is standard deviation, due to its simplicity and intuitive appeal.
What is the price of a risky investment where you have a 50% chance to earn $1m and 50% chance to earn zero?
The price of this investment should be the actuarial value, which is the expected value of the investment. In this case, it is $500,000 (0.5 * $1M + 0.5 * $0 = $500K).
How do profit-maximizing firms generally approach risk?
Profit-maximizing firms are often risk-neutral, meaning they neither overpay to take on risk nor overpay to avoid it. They focus on the raw average returns.
What is the actuarial value?
The actuarial value is the statistical expectation or average value of an investment, calculated as the sum of all possible outcomes weighted by their probabilities.
Why might humans not be risk-neutral like firms?
Humans generally tend to be risk-averse, meaning they prefer to avoid risk, and thus need to be enticed to carry risk, often requiring a risk premium.
What is a risk premium?
A risk premium is additional compensation paid to someone to entice them to take on risk that they would otherwise avoid.
How is the concept of actuarial value applied in the example provided?
In the example, the actuarial value of the investment is $500,000. If only $300,000 is charged, then the average gain for the investor is calculated as 0.5 * $700,000 + 0.5 * (-$300,000) = $200,000, which is the actuarial expectation minus the price paid ($500K - $300K = $200K).
What is priced risk?
Priced risk is a type of risk that has a risk premia greater than 0%, which cannot be eliminated by diversification and is considered systematic or non-diversifiable.
What is the role of the marginal investor regarding priced risk?
The marginal investor avoids priced risk as it cannot be diversified away.
How can systematic risk be managed if it cannot be eliminated?
Systematic risk can be traded in a complete market by paying a premium to another person to carry that risk.
What is unpriced risk?
Unpriced risk is a risk with a risk premia of 0% and is irrelevant to the marginal investor, as they neither avoid nor desire the characteristic it represents.
What are idiosyncratic risks?
Idiosyncratic risks are risks that are specific to a firm and can be diversified away, also known as firm-specific, diversifiable, or non-systematic risks.
What does adding more assumptions to the notion of priced and unpriced risk lead to?
It leads to the Capital Asset Pricing Model (CAPM).
What does CAPM describe?
CAPM describes the relationship between systematic risk and expected return for assets, particularly stocks.
Can diversifiable risk be completely eliminated in a portfolio?
No, even in a fully diversified portfolio, some systematic risk remains and it can be traded but not eliminated.
How is the price of taking systematic risk measured?
The price of taking systematic risk is another measure of the price of risk.
What is Sharpe’s 1964 CAPM expression?
It is an expression that connects an asset’s return with how much systematic risk it carries, using Beta (β) as the risk factor.
What does the CAPM equation look like?
What does the term ‘Beta (β)’ represent in CAPM?
Beta (β) represents the factor load or the measure of an asset’s systematic risk relative to the market.