Understanding how a typical Option Deal is done in the market – By Prof. Simply Simple TM In one of our recent lessons, we had explained how in a market.

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Presentation transcript:

Understanding how a typical Option Deal is done in the market – By Prof. Simply Simple TM In one of our recent lessons, we had explained how in a market comprising of several buyers and sellers, one need not know who the counter-party is.

We had also covered a lesson on ‘Options’ in order to get an understanding of the concept. I will now explain to you how an Option Deal is practically done in the market place.

In the stock market there are several participants who are both buyers and sellers…

A stock market is a platform where this is free flow of information…

This is so that the current stock price is known to every participant (buyers and sellers) Any participant trying to extract a higher price will not be able to do so because of the free flow of information which prevents any sort of price arbitrage. This is what we call ‘Price Discovery’.

Now lets say there is a stock option on stock A, which is currently quoting at Rs.100. And let’s say the option expires after 5 days…

Now let’s say there are two participants “Ram” & “Sam” in this market. Ram is of the view that the stock prices would go up in near future and he could make profit by buying stock ‘A’ at Rs. 120 today. But Ram does not want to take downside risk to an unmeasured extent (i.e. in case the price falls below Rs 120).

Hence he chooses to buy a call option which protects him against any downside risk. For getting this service he would have to pay a premium to the seller of the option. The seller of the option, Sam, on the other hand has a view that the price of the stock will fall, in which case, he knows that the buyer will NOT exercise his option so that he can earn the premium of let’s say Rs 2.

To understand this better let’s assume that Ram has bought a call option at the strike price of Rs. 120 (i.e. the price at which he gets a right to buy the stock “A” in future from the seller of the call option). Now, look at how the prices move in these 5 days and what implications it has for Ram & Sam…

It is important to understand that this trade starts with a debit balance of Rs 2 ( the premium) in the buyer’s (Ram) account while the seller’s account would show a credit balance of the same amount ( Rs 2 – Premium amount). Further, it is imperative to know that Rs. 2 is the maximum debit and credit which can occur in Ram’s and Sam’s account respectively. Day 1 Sam Seller DebitCredit Premium Rs. 2 Ram Seller Debit Premium Rs 2 Credit

Ram’s buying price of the Options on day “One” – 120 Closing Price on day “One” – 122 His notional profit at the end of day “One” – Rs. 2 But, unlike futures, Ram’s account will not be credited by this profit till he settles or squares off his contract. However, Sam’s account would be debited by Rs 2 since he is obliged to honor the contract. Day 1 Sam Seller DebitCredit Premium Rs. 2 Day 1Rs 2 Ram Buyer Debit Premium Rs 2 Credit Day 1 (notional profit Rs. 2) NIL

Closing Price on day “two” – 125 Ram’s gross notional profit now is Rs. 5 and Sam’s loss compared to the previous closing price is Rs. 3. So, in the end, Sam’s account gets debited by Rs 3 as shown in the tables below. Day 2 Sam Seller DebitCredit Premium Rs. 2 Day 1Rs 2 Day 2Rs 3 Ram Buyer Debit Premium Rs 2 Credit Day 1Nil Day 2 (notional profit Rs. 5) Nil Ram can cash out his notional profit today by assigning his call option to Sam. Sam cannot exit the contract; however; he can pass on his probable future obligation to some other participants by honoring the losses till date.

Closing Price on day “Three” – 124 Ram’s notional profit comes down to Rs. 4 and Sam’s account would get credited by Rs 1. Day 3 Ram Buyer Debit Premium Rs 2 Credit Day 1Nil Day 2Nil Day 3 (notional profit Rs. 4) Nil Sam Seller DebitCredit Premium Rs. 1 Day 1Rs 2 Day 2Rs. 3 Day 3Rs 1 Ram can cash out his notional profit today by assigning his call option to Sam. Sam cannot exit the contract; however, he can pass on his probable future obligation to some other participants by honoring the losses till date.

Closing Price on day “Four” – 123 Ram’s notional profit will come down to Rs. 3 and Sam’s account would get credited by Rs 1. Day 4 Ram Buyer Debit Premium Rs 2 Credit Day 1Nil Day 2Nil Day 3Nil Day 4 (notional profit Rs. 3) Nil Sam Seller DebitCredit Premium Rs 2 Day 1Rs 2 Day 2Rs 3 Day 3Rs 1 Day 4Rs 1 Ram can cash out his notional profit today by assigning his call option to Sam. Sam cannot exit the contract; however; he can pass on his probable future obligation to some other participants by honoring the losses till date.

Closing Price on day “Five” – 127 Ram’s notional profit would increase to Rs.7. So at the end of day 5 (settlement day), Ram’s account with his broker would get credited by Rs 7 while Sam’s account would get debited by Rs. 4. Day 5 – Settlement Date Ram Buyer Debit Premium Rs 2 Credit Day 1Nil Day 2Nil Day 3Nil Day 4Nil Day 5Rs 7 Sam Seller DebitCredit Premium Rs 2 Day 1Rs 2 Day 2Rs 3 Day 3Rs 1 Day 4Rs 1 Day 5Rs 4

Thus the effect of the 5 days leading to the settlement would look like this… Day 5 – Settlement Date Ram Buyer Debit Premium Rs 2 Credit Day 1Nil Day 2Nil Day 3Nil Day 4Nil Day 5NilRs 7 TotalRs 2Rs 7 Net gainRs. 5 Sam Seller DebitCredit Premium Rs 2 Day 1Rs 2 Day 2Rs 3 Day 3Rs 1 Day 4Rs 1 Day 5Rs 4 TotalRs 9Rs 4 Net LossRs 5

In this case, the Call Option buyer has a net gain of Rs 5 while the Call Option seller has a net loss of Rs 5 Day 5 – Settlement Date Ram Buyer Debit Premium Rs 2 Credit Day 1Nil Day 2Nil Day 3Nil Day 4Nil Day 5NilRs 7 TotalRs 2Rs 7 Net gainRs. 5 Sam Seller DebitCredit Premium Rs 2 Day 1Rs 2 Day 2Rs 3 Day 3Rs 1 Day 4Rs 1 Day 5Rs 4 TotalRs 9Rs 4 Net LossRs 5

But what would have happened if on the last day instead of the price rising by Rs 4, it had fallen by Rs 7 to Rs. 116?

As seen in the table if the prices had fallen on the 5 th day, the “Call Option” buyer’s account ( Ram’s Account) would not be debited by any amount. But his notional profits will wipe out and he will not lose any thing beyond Rs. 2 paid towards buying the call option. In the case of Sam, apart from initial premium, his account will be credited to the maximum extent of his previous net debits. So, if price of the stock comes down to Rs. 116, seller’s account (Sam’s account) would get credited to the maximum of Rs. 3. Ram Buyer Debit Rs. 2 Credit Day 1Nil Day 2Nil Day 3Nil Day 4Nil Day 5Nil Sam Seller DebitCredit Premium Rs 2 Day 1Rs 2 Day 2Rs 3 Day 3Rs 1 Day 4Rs 1 Day 5Rs 3

The final reconciliation in this case would be somewhat like this… Ram Buyer Debit Premium Rs 2 Credit Day 1Nil Day 2Nil Day 3Nil Day 4Nil Day 5Nil TotalRs 2Rs 0 Net LossRs 2 Sam Seller DebitCredit Premium Rs 2 Day 1Rs 2 Day 2Rs 3 Day 3Rs 1 Day 4Rs 1 Day 5Rs 3 TotalRs 5Rs 7 Net GainRs 2

Thus, we see that Ram has unlimited “upside” gain but limited “downside” liability while Sam on the other hand has unlimited “downside” liability but a limited “upside” gain to the tune of the premium amount only. Thus the ‘Call Option” buyer has limited risk while the “Call Option” seller takes a much larger risk!

Phew! That was quite a tough one. I hope you have got some understanding of this esoteric concept which dodges the brightest brains many a times.

Please do let me know if I have managed to clear this concept for you. Your feedback is very important to me as it helps me plan my future lessons. Please give your feedback at

The views expressed in these lessons are for information purposes only and do not construe to be of any investment, legal or taxation advice. They are not indicative of future market trends, nor is Tata Asset Management Ltd. attempting to predict the same. Reprinting any part of this presentation will be at your own risk and Tata Asset Management Ltd. will not be liable for the consequences of any such action. Disclaimer

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