Complex sentence: When Mike points out that there are no buyers to purchase the stock that Joe has retrieved, he cons Naveen by tricking him into buying the knicker order originally meant for him and makes him pay cash.
Split into simpler sentences: When Mike points out that there are no buyers to purchase the stock that Joe has retrieved, he decides to con Naveen. He tricks Naveen into buying the knicker order originally meant for him and makes him pay cash.