McCauley, Joseph L.; Gunaratne, Gemunu H. - Volkswirtschaftliche Fakultät, … - 2003
, namely, the capital asset pricing model (CAPM). We show here, in contrast, that the option valuation is not uniquely … determined; in particular, strategies based on the delta-hedge and CAPM provide different valuations of an option although both … hedges are instantaneouly riskfree. Second, we show explicitly that CAPM is not, as economists claim, an equilibrium theory. …