Option Buyer v/s Option Writer
21 Apr 2017
Nilesh Jain
New Page 1
An Option Buyer is someone who buys an option from sellers/ writer. The
buyer of an option pays a premium and buys the right of that particular option but is not
obliged to writer to exercise the option.
Buyer of an option has limited risk up to the premium paid, and
theoretically it can earn unlimited reward if stock/index moves significantly higher (in
case of call) and lower (in case of put). The biggest risk is of time decay and drop in
volatility. If market remains range bound or near expiry, premium will erode faster due to
time decay factor, which will result into negligible profit or may turn into losses.
Options should be bought only when you are confident that stock/index
will move significantly either side because if stock/index remains range bound, the
premium of both At-The-Money and Out-The-Money options will decrease and become zero till
expiry. Advance traders can also buy options if they expect volatility to shoot up.
An Option Writer is someone who sells an option but without holding any
long positions, it is like short selling the stock/index. The option writer receives
premium and has the obligation to keep the agreement if buyer of an option exercises his
rights. Writer of an option has a higher probability of making money compared to an option
buyer. Option writers primarily trade on time decay and volatility, while market movement
is secondary factor. Following are the two scenarios where option writers can initiate
positions:
If he expects stock/index to trade sideways and volatility is expected
to go down.
If he expects stock/index to move higher (if a put option) or lower (if
a call option).
|
Option Buyer
|
Option Writer
|
Risk
|
Buyer of an option has limited risk (to the extent
premium paid)
|
An Option writer has unlimited risk
|
Reward
|
Option buyer has unlimited profit potential
|
Option writer has limited profit potential (to the
extent premium received)
|
Reward to risk ratio
|
Option buyer has high reward to risk ratio
|
Option writer has low reward to risk ratio
|
Probability
|
Probability for option buyer of making money will be
33%
|
Probability for option writer of making money will be
67%
|
Rights/obligation
|
Option buyer has right but not an obligation to
exercise the option
|
Option writer has obligation but doesn’t have a
right to exercise the option
|
Margin requirement
|
Option buyer pays premium to buy options
|
Option writer has to pay margin money, which will be
same as futures (as risk is unlimited like futures).
|
Time Decay
|
Time decay works against an option buyer
|
Time decay works in favour of an option seller
|
Breakeven
|
Breakeven is the point where option buyer starts to
make money.
|
It is the exact same point at which option writer
starts to lose money.
|
Following is the payoff table of Option buyer (Long Put Strategy)
Current Nifty Price
|
Rs 8200
|
Strike price
|
Rs 8200
|
Buy Price
|
Rs 60
|
BEP (strike Price - Premium paid)
|
Rs 8140
|
Lot size (in units)
|
75
|
On Expiry Nifty Closes at
|
Net Payoff from Long put option
|
7800
|
340
|
7900
|
240
|
8000
|
140
|
8100
|
40
|
8140
|
0
|
8200
|
-60
|
8300
|
-60
|
8400
|
-60
|
Following is the payoff table of Option Writer (Short put strategy)
Current Nifty Price
|
Rs 8300
|
Strike price
|
Rs 8200
|
Selling Price
|
Rs 80
|
BEP (strike Price - Premium received)
|
Rs 8120
|
Lot size (in units)
|
75
|
On Expiry Nifty Closes at
|
Net Payoff from sell put option
|
7800
|
-320
|
7900
|
-220
|
8000
|
-120
|
8100
|
-20
|
8200
|
0
|
8300
|
80
|
8400
|
80
|
8500
|
80
|
Piece of Advice:
Investors, who have a low risk appetite, should stick to basic strategy
like option buying, whereas option writing should only be used by sophisticated investors
as risk involved in writing of an option is higher compare to reward.