PeterI have a better Q this time :pI have a call option (out of the money) that expires in JAN 11, i am not sure if the stock will make it. But i am confident it do well by the APR 11.So is there a way that I can rollover this Call to APR11 Expiry. If so how should i do it. I mean should i cancel JAN11 Call and buy APR 11 call.And also What are the disadvantages. can you please help me in thisKaushik Hi,Why does hedging ATM options become difficult as expiry time goes to 0? I know it has something to do with gamma, since gamma goes to infinity when expiration time goes to 0 and thus delta is increasing extremely fast. Therefore the hedge ratio is constantly changing at a high rate. Is there a more intuitive explanation?