A mysterious trader known as '50 Cent' may have bet millions that volatility in the stock market will explode

• A trader nicknamed "50 Cent" may be placing big bets that the VIX - known as Wall Street's fear index - will surge. 
• Someone has bought 100,000 call options for $0.50 each, betting $5 million the VIX will pop up to 50 in May. 
• Another 50,000 contracts were bought for $0.51, a purchase valued at roughly $2.6 million. 

Someone in the vast world of financial markets is betting big that US equities will run into heavy turbulence in the coming months.