The volatilty falls when market goes up and rise when market goes down. I direction trade and doesnt trade volatility, the reason i daytrade options is because i dont have the margin requirement for futures (KOSPI). If i think it is going up, will i be better off shorting put than buying call? If i am right and the market did go up, the call doesnt rise much because the implied vol. shrinks and the put falls faster. On the other hand, if i am bearish, will i be better off buying puts? So, should i just trade puts? and if i am wrong on a bullish view, will shorting put lose more than just buying calls? Please advise.