Market efficiency's impact on pricing: the contradiction between price distortion caused by information asymmetry and arbitrage pricing

Market efficiency, a cornerstone of modern economics, posits that prices in a perfectly competitive market reflect all available information. This theory suggests that no individual or entity can consistently outperform the market through analysis, as all relevant data is already incorporated into prices. However, this ideal is often challenged by the presence of information asymmetry, where one party holds more or better information than another, leading to distortions in pricing. The tension between these forces—market efficiency and information asymmetry—shapes pricing mechanisms, particularly in financial markets where arbitrage plays a pivotal role.

Information Asymmetry and Its Impact on Pricing

Information asymmetry arises when there is a disparity in the quality or accessibility of information among market participants. This can manifest in two forms: adverse selection, where sellers possess information