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  2. Volatility (finance) - Wikipedia

    en.wikipedia.org/wiki/Volatility_(finance)

    actual historical volatility which refers to the volatility of a financial instrument over a specified period but with the last observation on a date in the past near synonymous is realized volatility , the square root of the realized variance , in turn calculated using the sum of squared returns divided by the number of observations.

  3. Equity premium puzzle - Wikipedia

    en.wikipedia.org/wiki/Equity_premium_puzzle

    That is, investors are more likely to react to negative news and expect negative changes in implied volatility to have a stronger impact on stock returns. The authors also find that changes in implied volatility can predict future stock returns. Stocks that experience negative changes in implied volatility have higher expected returns in the ...

  4. Volatility risk - Wikipedia

    en.wikipedia.org/wiki/Volatility_risk

    Volatility risk is the risk of an adverse change of price, due to changes in the volatility of a factor affecting that price. It usually applies to derivative instruments , and their portfolios, where the volatility of the underlying asset is a major influencer of option prices .

  5. United States securities regulation - Wikipedia

    en.wikipedia.org/wiki/United_States_Securities...

    The Securities Act of 1933 regulates the distribution of securities to public investors by creating registration and liability provisions to protect investors. With only a few exemptions, every security offering is required to be registered with the SEC by filing a registration statement that includes issuer history, business competition and material risks, litigation information, previous ...

  6. Modern portfolio theory - Wikipedia

    en.wikipedia.org/wiki/Modern_portfolio_theory

    Portfolio return volatility is a function of the correlations ρ ij of the component assets, for all asset pairs (i, j). The volatility gives insight into the risk which is associated with the investment. The higher the volatility, the higher the risk. In general: Expected return:

  7. Financial regulation - Wikipedia

    en.wikipedia.org/wiki/Financial_regulation

    Financial regulation is a broad set of policies that apply to the financial sector in most jurisdictions, justified by two main features of finance: systemic risk, which implies that the failure of financial firms involves public interest considerations; and information asymmetry, which justifies curbs on freedom of contract in selected areas of financial services, particularly those that ...

  8. Volatility tax - Wikipedia

    en.wikipedia.org/wiki/Volatility_Tax

    The volatility tax is a mathematical finance term first published by Rick Ashburn, CFA in a 2003 column, and formalized by hedge fund manager Mark Spitznagel, describing the effect of large investment losses (or volatility) on compound returns. [1] It has also been called volatility drag, volatility decay or variance drain.

  9. Regulatory economics - Wikipedia

    en.wikipedia.org/wiki/Regulatory_economics

    Regulatory capture is the process through which a regulatory agency, created to act in the public interest, instead advances the commercial or special concerns of interest groups that dominate the industry it is meant to regulate. [2]