Playing too much GTA 5. the last few missions you do all revolve around selling and purchasing stock before/after killing people in order to make market gains. It was only a matter of time before someone decided it would be a viable investment strategy in real life.
So here's a scheme, short a stock. Commit attempted murder to drive down the share price. Make profit.
http://www.bbc.co.uk/news/world-europe-39664212
Caveat: attempted market manipulation is an offence under the Market Abuse Regulation. Plus, murder and attempted murder are also best avoided.