Thanks gunsho.
Actually I noticed his previous trade of 26.9.12 but just forget to link two trades, that the second trade is the squaring off of his previous trade and not a new trade.
However, my main interest is to know the rationale behind, buying (or selling) calls and put of same strike. How much profitable is this strategy when market is in uptrend or downtrend or sideways. Can you please elaborate. Thanks
This is called straddle.
http://www.investopedia.com/terms/s/straddle.asp.
Basically if you see a market in range bound, you can sell both PE and CE ATM options. Now if XYZ is the total premium received, you are safe as long as market is Strike price +/- XYZ.
In this example, 5700 CE (169.2) + PE (134.2) were sold. So as long as market is between 5700 - 303.4 and 5700 + 303.4, the premium received will take care of the loss in one of the legs.
The maximum profit is when market expires at 5700, you keep the entire premium (~300). Generally you don't have to wait until expiry. If together the pair has reduced enough due to time decay, we can buy back them and close the trade.
Max risk is unlimited. If nifty goes above 6000 or below 5400, then we make loss.
You can read more about Iron condors where risk can be limited.