Examlex
Why do most economists favor emissions taxes over direct controls as a pollution deterrent?
Well-Diversified Portfolio
An investment portfolio that spreads risk across various asset classes, industries, or geographical regions to reduce the impact of any single investment's poor performance.
Single Index Model
A simplified model to estimate security returns that relates these returns to a single market index, accounting for market risk.
Portfolio's Sigma
Portfolio's Sigma, often synonymous with standard deviation, quantifies the overall risk or volatility of a portfolio, indicating how its returns can vary from the expected return.
Single Index Model
A financial model that describes the return of a stock as a function of the return of a market index, plus a residual unique to the stock.
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