With formal theoretical conditions as premise, this study develops a formal empirical structure which facilitates, simultaneously inferences in respect of each of rationality and efficiency of pricing of idiosyncratic risk. Using exactly the same data, the new empirical structure revolves around...

The behaviour of market agents has always been extensively covered in the literature. Risk averse behaviour, described by von Neumann and Morgenstern (1944) via a concave utility function, is considered to be a cornerstone of classical economics. Agents prefer a fixed profit over uncertain...

In this paper, we examine an exchange economy with a financial market composed of three assets: a share of a stock, an European call option written on the stock, and a riskless bond. The financial market is assumed to be incomplete and the option is not a redundant asset. In such a case the...