Dan has already explained that is it is not limited risk strategy as mentioned. Any strategy which is net short (i.e. more short position than long position can't be limited risk). Just simulate the P&L if nifty is at 6100 /6200 etc. Practically, this strategy has wide range..and atleast till 6000 level, the losses will be in limit. Moreover, getting such high movement on upside is less likely. It is more likely to see such huge move on downside hence put ration spreads are more dangerous.
IV will certainly impact the pricing. The impact will depend on level of ATM/OTM from current spot level and the volatility at that time.
coming to calculation - say 5400 CE was at 113 and 5700 CE was at 20.
Net debit to open the strategy = 113 - 2*20 = 73. For one contract = 73*50 = 3650.
Minimum Breakeven to see any profit on it, 5400+73 = 5473.
Below this level is only loss, which is limited to max of net debit = 3650
Max profit, expiry at 5700 when sold calls are worth 0, and bought call has max value. The profit will be = (5700-5400-73)*50 = 11350.
You can also calculate the value of position when spot is above 5700. To understand it easily, break it as 1 5400-5700 call spread + 1 naked 5700 short call. Max value of call spread can be 300 giving max profit of 227. Above 5700 when second short position starts loosing, you have the buffer of profit earned on spread to protect till nifty reaches 5700+227 = 5927. Beyond then it is at the mercy of market.
My sincere suggestion - you have been good tv viewer and listened to the partial truth from expert. Now become good trader and evaluate it. Believe in your method of analysis cause other people might give approximate numbers.
All the best and happy trading
IV will certainly impact the pricing. The impact will depend on level of ATM/OTM from current spot level and the volatility at that time.
coming to calculation - say 5400 CE was at 113 and 5700 CE was at 20.
Net debit to open the strategy = 113 - 2*20 = 73. For one contract = 73*50 = 3650.
Minimum Breakeven to see any profit on it, 5400+73 = 5473.
Below this level is only loss, which is limited to max of net debit = 3650
Max profit, expiry at 5700 when sold calls are worth 0, and bought call has max value. The profit will be = (5700-5400-73)*50 = 11350.
You can also calculate the value of position when spot is above 5700. To understand it easily, break it as 1 5400-5700 call spread + 1 naked 5700 short call. Max value of call spread can be 300 giving max profit of 227. Above 5700 when second short position starts loosing, you have the buffer of profit earned on spread to protect till nifty reaches 5700+227 = 5927. Beyond then it is at the mercy of market.
My sincere suggestion - you have been good tv viewer and listened to the partial truth from expert. Now become good trader and evaluate it. Believe in your method of analysis cause other people might give approximate numbers.
All the best and happy trading