How exactly do you propose the trade can be done? Zerodha charges 20 per trade. So to break even you have to trade 20 lots (1000units). After that every 1000 will give you profits of Rs 55/-. This is assuming you go long and pay only the premium. Also assuming you will find buyer at .10 after buying at .05.
Have not figured out those trades. Can understand people squaring of shorts to release their margins. But longs???
Alright, here it is....please correct me if i am wrong:
I have used 1000 lots here. Maximum risk is 2,500 but profit calculation is below.
Buy: .05*50*1000=2,500
Sell: .1*50*1000=5,000
Brokerage: 52.9 (including buy and sell) Please also refer to Zerodha's calculator on their website. My calculation also includes the stamp duty.
Profit after brokerage: 2,447.1
Now, finding a buyer at .10:
Well, just as an observation for this month's expiry, please look at the price movements of the lots in Nifty and Renuka ( I know of only these but one can look at Hindalco, Tata Steel etc also) which would be priced .05 by next week and check the liquidity of the lots. Actually, this is one aspect I am skeptical about and hence have put up the question here. But personally, I have seen lots doing just .05-.10 entire day (my lots that went into losses did this) and it made me look into it.
Also, this kind of trade could not be done through our regular brokers as they would charge per lot and not per trade and therefore I think none of us thought about these. So if these trades are happening then someone must be doing them, and I am guessing, if they can, we can too.
Using the bhavcopy for last few months/years one can backtest this too.