Stress–strain curve: Difference between revisions

Revision as of 19:46, 19 January 2014

In finance, the strike price (or exercise price) of an option is the fixed price at which the owner of the option can buy (in the case of a call), or sell (in the case of a put), the underlying security or commodity.

The strike price is a key variable in a derivatives contract between two parties. Where the contract requires delivery of the underlying instrument, the trade will be at the strike price, regardless of the spot price (market price) of the underlying instrument at that time.

For example, an IBM May 50 Call has a strike price of $50 a share. When the option is exercised, the owner of the option will buy 100 shares of IBM stock for $50 per share.

Moneyness

Moneyness is the value of a financial contract if the contract settlement is financial. More specifically, it is the difference between the strike price of the option and the current trading price of its underlying security.

In options trading, terms such as in-the-money, at-the-money and out-of-the-money describe the moneyness of options.

A call option is in-the-money if the strike price is below the market price of the underlying stock.
- A put option is in-the-money if the strike price is above the market price of the underlying stock.
A call or put option is at-the-money if the stock price and the exercise price are the same (or close).
A call option is out-of-the-money if the strike price is above the market price of the underlying stock.
- A put option is out-of-the-money if the strike price is below the market price of the underlying stock.

Mathematical formula

A call option has positive monetary value at expiration when the underlying has a spot price (S) above the strike price (K). Since the option will not be exercised unless it is in-the-money, the payoff for a call option is

\max [(S - K); 0]

also written as

(S - K)^{+}

where

(x)^{+} = {_{0 x < 0}^{x x \geq 0}

A put option has positive monetary value at expiration when the underlying has a spot price below the strike price; it is "out-the-money" otherwise, and will not be exercised. The payoff is therefore:

\max [(K - S); 0]

or

(K - S)^{+}

For a digital option payoff is $1_{S \geq K}$ , where $1_{{}}$ is the indicator function.

References

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+In [[finance]], the '''strike price''' (or '''exercise price''') of an [[option (finance)|option]] is the fixed price at which the owner of the option can buy (in the case of a [[call option|call]]), or sell (in the case of a [[put option|put]]), the underlying security or commodity.
+The strike price is a key variable in a [[derivative (finance)|derivatives]] contract between two parties.  Where the contract requires delivery of the [[underlying]] instrument, the trade will be at the strike price, regardless of the [[spot price]] (market price) of the underlying instrument at that time.
+For example, an IBM May 50 Call has a strike price of $50 a share. When the option is exercised, the owner of the option will buy 100 shares of IBM stock for $50 per share.
+==Moneyness==
+[[Moneyness]] is the value of a financial contract if the contract settlement is financial. More specifically, it is the difference between the strike price of the option and the current trading price of its underlying security.
+In options trading, terms such as ''in-the-money'', ''at-the-money'' and ''out-of-the-money'' describe the moneyness of options.
+* A [[call option]] is in-the-money if the strike price is below the market price of the underlying stock.
+** A put option is in-the-money if the strike price is above the market price of the underlying stock.
+* A call or put option is at-the-money if the stock price and the exercise price are the same (or close).
+* A call option is out-of-the-money if the strike price is above the market price of the underlying stock.
+** A put option is out-of-the-money if the strike price is below the market price of the underlying stock.
+===Mathematical formula===
+A [[call option]] has positive monetary value at expiration when the underlying has a spot price ('''S''') ''above'' the strike price ('''K'''). Since the option will not be exercised unless it is in-the-money, the payoff for a call option is
+:<math>\max\left[(S-K);0\right]</math>
+also written as
+:<math>(S-K)^{+} \ </math>
+where
+:<math>(x)^+ =\{^{x\ \ x\geq0}_{0\ \  x<0}</math>
+A [[put option]] has positive monetary value at expiration when the underlying has a spot price ''below'' the strike price; it is "[[out-the-money]]" otherwise, and will not be exercised. The payoff is therefore:
+:<math>\max\left[(K-S);0\right]</math>
+or
+:<math>(K-S)^{+} \ </math>
+For a [[digital option]] payoff is <math>1_{S\geq K}</math>, where <math>1_{\{\}}</math> is the [[indicator function]].
+==See also==
+*[[Option time value]]
+*[[Intrinsic value (finance)|Intrinsic value]]
+*[[Option screener]]
+==References==
+* {{cite book
+ | last = McMillan| first = Lawrence G.
+ | title = Options as a Strategic Investment
+ | edition = 4th ed.
+ | publisher = New York : New York Institute of Finance
+ | year = 2002
+ | isbn = 0-7352-0197-8
+ }}
+{{Derivatives market}}
+{{DEFAULTSORT:Strike Price}}
+[[Category:Options (finance)]]
+[[Category:Derivatives (finance)]]
+[[sv:Derivatinstrument#Terminologi inom derivathandel]]

Stress–strain curve: Difference between revisions

Revision as of 19:46, 19 January 2014

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Mathematical formula

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Revision as of 19:46, 19 January 2014

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