Derivatives, such as futures or options, are financial contracts which derive their value from a spot price, which is called the “underlying”. Derivative products like index futures, stock futures, index options and stock options have become important instruments of price discovery,...

Some studies show that the performance of option strategies with stock portfolios could depend on other factors or on market conditions. Benninga and Blume (1985) analyzed the optimality of portfolio insurance in complete and incomplete markets, and found that buying put option may be optimal...