Industry event comes amid a long-awaited boom in volume and volatility.
Industry survey shows four of five investors are satisfied with performance.
Equity-market volatility makes puts and calls more interesting.
Options can offer higher yields in current high volatility market.
Emerald will fill a market niche not addressed by the company’s other two exchanges.
Designation mandates order entered via price improvement period.
Plantiff says patents filed between 2003 and 2013 are invalid.
C2 Options Exchange will make its move in May.
ITG - Options Technology Solutions venture began trading in mid-February.