Long Put Spread is a fundamental strategy which combines the purchase and the sale of two puts.

Implied volatility is neither constant for every strike, nor for every expiry.

+ 1983 euros with our Ratio Backspread this week.

Option price does not move in a constant way

One way in order to build a ratio backspread strategy is to set it up delta neutral.

It's time to use a spreadsheet to price an option using Black-Scholes.