I now have the right but not the obligation to buy 100 shares of IBM at $155. within the next 6 months. I bought 100 IBM calls with a maturity of 6 months, and a strike of $155 I sold 100 IBM puts with a maturity of 6 months, and a strike of $155 I sold 100 IBM calls with a maturity of 6 months, and a strike of $155 I sold a 6-month futures contract on IBM at $155 I bought 100 IBM puts with a maturity of 6 months, and a strike of $155