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An option-trading firm is using the Black-Scholes (1973) model (with the same constant volatility for all strikes) to price index options. Market sentiment is that the stock return volatility is stochastic and changes in volatility are negatively correlated with stock returns. By using the Black-Scholes model with a constant volatility the firm is
Indefinite Period
A time frame without a specified end date, often used in contracts or employment agreements to indicate open-ended duration.
Exclusive Right
A privilege given to an individual or entity to be the sole provider or beneficiary of a certain service, product, or right, often for a specific period.
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Implied Warranty
A legal term for the assurance that a product is fit for its intended purpose, even if not explicitly stated at the time of sale.
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