The Black-Scholes Flaw

Maze of Binary Options Choices

The Black-Scholes Valuation formula is unique in it's regard to how it calculates binary options for trading. It has several assumptions that are programed into the model and there-in lies the problem. One of the primary assumptions for the Black-Scholes model for trading binary options is that there is access to risk-free capital. For many years this simply meant that gov't bonds were needed to secure risk free lending for this portion of the formula. As of around August 2011, the US credit rating was lowered from AAA to AA+ - this lowering of the credit rating effect binary options in that now rather than borrowing at a risk free interest rate, they have to pay the higher interest rate of less-safe bonds. The trading of binary options goes on and functions as usual, but rather than using US bonds, they are using German, or European instruments.