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In finance, the expiration date of an option contract (represented by Greek letter tau, τ) is the last date on which the holder of the option may exercise it according to its terms. [1] In the case of options with "automatic exercise", the net value of the option is credited to the long and debited to the short position holders.
The option style, as specified in the contract, determines when, how, and under what circumstances, the option holder may exercise it. It is at the discretion of the owner whether (and in some circumstances when) to exercise it. European – European-style option contracts may only be exercised at the option's expiration date. Thus they can ...
If an option is out-of-the-money at expiration, its holder simply abandons the option and it expires worthless. Hence, a purchased option can never have a negative value . [ 4 ] This is because a rational investor would choose to buy the underlying stock at the market price rather than exercise an out-of-the-money call option to buy the same ...
The call owner can exercise the option, putting up cash to buy the stock at the strike price. Or the owner can simply sell the option at its fair market value to another buyer before it expires ...
If the stock closes below the strike price at option expiration, the trader must buy it at the strike price. Example: Stock X is trading for $20 per share, and a put with a strike price of $20 and ...
A compound option is an option on another option, and as such presents the holder with two separate exercise dates and decisions. If the first exercise date arrives and the 'inner' option's market price is below the agreed strike the first option will be exercised (European style), giving the holder a further option at final maturity.
Put option: A put option gives its buyer the right, but not the obligation, to sell a stock at the strike price prior to the expiration date. When you buy a call or put option, you pay a premium ...
Upon exercise, a put option is valued at K-S if it is "in-the-money", otherwise its value is zero. Prior to exercise, an option has time value apart from its intrinsic value. The following factors reduce the time value of a put option: shortening of the time to expire, decrease in the volatility of the underlying, and increase of interest rates.