Stock price when the opinion was issued
Chicago Board Options Exchange. Options give you the right to buy or sell an underlying stock/index/commodity at a certain price for a certain length of time. Higher margins than just trading stocks. Taskmaster of proprietary products. Exclusive license on the VIX as well. Yield is 1.09%.
The business of exchanges is very good, sees growth. On a day like today when the market is down, trading exchanges are up because volumes go through the roof, with profitability right behind. Even talk of trading being allowed 24 hours a day.