We address an important yet unanswered question: What would be the economic determinants of the implied volatility during the zero lower bound periods? To answer this question, we examine time variations of the cap market implied volatility and investigate economic determinants on slopes and...

Psychological barriers are prevalent among various asset classes, and it is important to consider their impact on the prices of derivative securities. This paper demonstrates the potential existence of such barriers on the S&P 500 Index and examines their impact on this index's rate of return...