Gary Katz, CEO of the International Securities Exchange, has said the options exchange is on course for 2009, despite difficult market conditions.In the first two months of this year, the exchange’s average daily volume was down 12% to 3.7m contracts from 4.3m a year earlier. But early volumes in March have jumped to an average of 4.2m contracts.Talking to Futures and Options Intelligence at the Futures Industry Association’s conference in Boca Raton, Florida, Katz said various participants in the US were returning...