Orlando Shooting: How Past Acts Of Terror Affected Stock Markets By: Benzinga via Benzinga June 13, 2016 at 10:02 AM EDT Oman Mateen killed 50 people at an Orlando gay nightclub in the early hours of Sunday, making it the deadliest mass shooting in U.S. ... Read More >> Related Stocks: S&P 500 Bull 3X Direxion SPDR S&P 500 ETF Trust