In: Finance
(a)
Factor | Factor change | Call Option value | Put Option value |
1.Curent Market price |
Increase | Increase(Positive relation) | Decrease(Negative relation) |
Decrease | Decrease(Positive relation) | Increase(Negative Rltion) | |
2.Strike price or exercise price |
Increase | Decrease(Negative relation) | Increase(Positive relation) |
Decrease | Increase(Negative Rltion) | Decrease(Positive relation) | |
3.Time to expiry Or Time to maturity |
Increase | Increase(Positive relation) | Increase(Positive relation) |
Decrease | Decrease(Positive relation) | Decrease(Positive relation) | |
4.Risk Free rate of interest |
Increase | Increase(Positive relation) | Decrease(Negative relation) |
Decrease | Decrease(Positive relation) | Increase(Negative Rltion) | |
5.Volatility |
Increase | Increase(Positive relation) | Increase(Positive relation) |
Decrease | Decrease(Positive relation) | Decrease(Positive relation) | |
6.Dividends |
Increase | Decrease(Negative relation) | Increase(Positive relation) |
Decrease | Increase(Negative Rltion) | Decrease(Positive relation) |
(b)
1.Current Market price-
Call option become more valuble as the stock prices rises and they become less valuable as the stock prices decreases.
In case of put option, it becomes more valuable as the stock price decreases and becomes less valuable as the stock price increases.
Current market price | Increase | Decreases |
Call Option | More valuable | Less valuable |
Put option | Less Valuable | More valuable |
More valuable means more intrinsic value and more premium., or vise versa.
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2.Strike price or exercise price-
Call option become more valuable as the strike prices decreases and they become less valuable as the strike increases.
In case of put option, it becomes more valuable as the strike increases and becomes less valuable as the strike prices decreases
Strike price or exercise price | Increase | Decreases |
Call Option | Less valuable | More valuable |
Put option | More valuable | Less valuable |
3.Time to expiry Or Time to maturity-
Both the value of call and Put option increase in case the Time to expiry is more. Because in long life option contract more opportunities are opened.
4.Risk Free rate of interest-
Higher the risk free rate of interest ,higher the call option premium and lower the put option premium and vice versa.
Risk Free rate of interest | Call option premium | Put option premium |
High | High | Lower |
Lower | Lower | High |
5. Volatility-
The higher the Volatility or Instability in the prices of an underlying asset, the higher will be the Option premium .
Because high volatility means , high risk and high risk means , high premium.
6.Dividends-
In case dividends are receivable before due dateof option and the current market price is Cum-dividend market price,hence after the record date , it will becpme ex-dividned and the market value will reduce.This results high option premium in case of Put option nad Low option premium in case of call option.