I have been trading simple call and put options for a few years and for the past year I ventured into bull and bear spreads. At present I have a bull call spread showing some profit. The call option leg I bought has some nice gain, however the call option leg that I sold ( at higher strike price ) also appreciate in value, making the unrealized gain of this spread trade quite small. My question is --- is it for spread trade our aim is to hold on to expiration for maximum gain or should I closed off the trade when there is profit. Actually I have one bad experience that the bull call spread expired without value when the stock come back down again during expiration month. Also in general is spread option trade not that appropriate in volatile market?