The man accused of bombing the bus carrying the Borussia Dortmund football team allegedly hoped to make millions off an expected slump in the team's share price by using an obscure financial trade, a "put option." These trades are typically used by professional traders at banks or investment firms, suggesting the bomber had some experience with financial markets. The average person who wanted to make money off a dropping share price would more likely have taken out a bet on one of innumerable gambling websites or used a day-trading website. So if the stock drops, the trader can use the option to sell the shares at the higher price. The suspect bought the options from a computer at the same hotel where the football team was staying, authorities said.

Source: New Zealand Herald April 22, 2017 21:00 UTC