volatility that has been proposed for the real options approach (ROA), and also provide a theoretical and practical explanation … for estimating an unbiased volatility and unconditional for this methodology. The results of the research suggest that the … use of the current methods generates a marked overestimation of the volatility, which is ultimately transmitted in the …

volatility need not be increased value and postponed investment. This depends on signs of correlations and what parameters are … market is nonpositive and not invariant to changes in volatility. For crude oil during 1993-2008, these changes are …

(average) Tobin's Q increases with firm-level volatility. The significance mainly comes from R&D firms, which have more growth … options than non-R&D firms. By decomposing firm-level volatility into its systematic and unsystematic part, we document that … only idiosyncratic volatility has a significant effect on valuation. Second, we analyze the relation of stock returns to …

We study business uncertainty in high- versus low-volatility environments by surveying over 31,000 managers across 41 … their mean absolute deviations. Analogously, we measure realized volatility using absolute forecast errors. We establish two … new facts. (1) Subjective uncertainty and realized volatility both decline with GDP per capita. (2) Managers underestimate …