At 2:05 PM Eastern Standard Time on Friday, January 17, 2014 the price of a $1,175 Put on Priceline.com Inc. that expired that same day was $0.30 on the NASDAQ Stock exchange. Just over an hour later, that same product fetched $6.10 before eventually expiring worthless a short time later. That event offered a savvy investor a return in the neighborhood of 2,000 percent in about an hour and a half. And that kind of thing is far more common than you would ever imagine. This ten minute read explains exactly how and why this happens, and how a person might get in on the action.