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Encyclopedia > Foreign exchange option
Foreign Exchange

Exchange Rates
Currency band
Exchange rate
Exchange rate regime
Fixed exchange rate
Floating exchange rate
Linked exchange rate
In finance, the exchange rate (also known as the foreign-exchange rate, forex rate or FX rate) between two currencies specifies how much one currency is worth in terms of the other. ... Image File history File links Forex. ... The currency band is a system of exchange rates by which a floating currency is backed by hard money. ... The exchange rate regime is the way a country manages its currency in respect to foreign currencies and the foreign exchange market. ... A fixed exchange rate, sometimes (less commonly) called a pegged exchange rate, is a type of exchange rate regime wherein a currencys value is matched to the value of another single currency or to a basket of other currencies, or to another measure of value, such as gold. ... A floating exchange rate or a flexible exchange rate is a type of exchange rate regime wherein a currencys value is allowed to fluctuate according to the foreign exchange market. ... A linked exchange rate system is a type of exchange rate regime to link the exchange rate of a currency to another. ...

Markets
Foreign exchange market
Futures exchange
The foreign exchange (currency or forex or FX) market exists wherever one currency is traded for another. ... The introduction to this article provides insufficient context for those unfamiliar with the subject matter. ...

Products
Currency
Currency future
Forex swap
Currency swap
Foreign exchange option
A currency future, also FX future or foreign exchange future, is a futures contract to exchange one currency for another at a specified date in the future at a price (exchange rate) that is fixed on the last trading date. ... Forex swap is an over the counter short term interest rate derivative instrument. ... A currency swap is a foreign exchange agreement between two parties to exchange a given amount of one currency for another and, after a specified period of time, to give back the original amounts swapped. ...

See also
Bureau de change
A Bureau de Change is an organisation or facility which allows customers to exchange one currency for another. ...

In finance, a foreign exchange option (commonly shortened to just FX option or currency option) is a derivative financial instrument where the owner has the right but not the obligation to exchange money denominated in one currency into another currency at a pre-agreed exchange rate on a specified date. The FX options market is the deepest, largest and most liquid market for options of any kind in the world. Most of the FX option volume is traded OTC but a fraction is traded on exchanges like the Philadelphia Stock Exchange, or the Chicago Mercantile Exchange for options on futures contracts. Derivatives traders at the Chicago Board of Trade. ... Over-the-counter (OTC) trading is to trade financial instruments such as stocks, bonds, or derivatives directly between two parties. ... The Philadelphia Stock Exchange (PHLX) is the oldest stock exchange in the United States. ... President George W. Bush at the CME (March 6, 2001). ... A futures contract is a form of forward contract, a contract to buy or sell an asset of any kind at a pre-agreed future point in time, that has been standardised for a wide range of uses. ...


For example a GBPUSD FX option might be specified by a contract allowing the owner to sell £1,000,000 and buy $2,000,000 on December 31. In this case the pre-agreed exchange rate, or strike price, is 2.0000 GBPUSD or 0.5000 USDGBP and the notional is £1,000,000. This type of contract is both a call on dollars and a put on sterling, and is often called a GBPUSD put by market participants. If the dollar is stronger than 2.0000 GBPUSD come December 31 (say at 1.9000 GBPUSD) then the option will be exercised, allowing the owner to sell GBP at 2.0000 and immediately buy it back in the spot market at 1.9000, making a profit of (2.0000 - 1.9000)*1,000,000 GBP = 100,000 USD in the process. If he or she immediately exchanges their profit, this amounts to 100,000/1.9000 = 52,631.58 GBP. This article does not cite any references or sources. ... A put option (sometimes simply called a put) is a financial contract between two parties, the buyer and the writer of the option. ...

Contents

Valuing FX options: The Garman-Kohlhagen model

As in the Black-Scholes model for stock options and the Black model for certain interest rate options, the value of an european option on a FX rate is typically calculated by assuming that the rate follows a log-normal process. The Black-Scholes model, often simply called Black-Scholes, is a model of the varying price over time of financial instruments, and in particular stocks. ... A stock option is a specific type of option with a stock as the underlying instrument (the security that the value of the option is based on). ... The Black model (sometimes known as the Black-76 model) is a variant the Black-Scholes option pricing model. ... An interest rate derivate is a derivative security where the underlying asset is the right to pay or receive a (usually notional) amount of money at a given interest rate. ... The style or family of a financial option is a general term denoting the class into which the option falls, usually defined by the manner in which the option may be exercised. ...


Examples

may rate

N is the cumulative normal distribution function
rd is domestic risk free rate
rf is foreign risk free rate
and σ is the volatility of the FX rate.

Market

The global market for exchange-traded currency options is notionally valued by the Bank for International Settlements at $158,300 million in 2005... BIS Headquarters in Basel The Bank for International Settlements (or BIS) is an international organization of central banks which exists to foster cooperation among central banks and other agencies in pursuit of monetary and financial stability. It carries out its work through subcommittees, the secretariats it hosts, and through its...


See also

A put option (sometimes simply called a put) is a financial contract between two parties, the buyer and the writer of the option. ... This article does not cite any references or sources. ... Derivatives traders at the Chicago Board of Trade. ... The foreign exchange (currency or forex or FX) market exists wherever one currency is traded for another. ...

External links

  • Online Exotic FX Option Calculators, sitmo.com


  Financial derivatives v d  
Options
Vanilla Types: Option styles | Call | Put | Warrants | Fixed income | Employee stock option | FX
Strategies: Covered call | Naked put | Bear call spread | Bear put spread | Bull call spread | Bull put spread | Calendar spread
Straddle | Long straddle | Long strangle | Butterfly | Short butterfly spread | Short straddle | Short strangle
Vertical spread | Volatility arbitrage | Debit spread | Credit spread | Synthetic
Exotics: Asian | Lookback | Barrier | Binary | Swaption | Mountain range
Valuation: Moneyness | Option time value | Black-Scholes | Black | Binomial | Stochastic volatility | Implied volatility | Net volatility | Local volatility
See Also: CBOE | Derivatives market | Option Screeners | Option strategies | Pin risk
Swaps
Interest rate | Total return | Equity | Credit default | Forex | Cross-currency | Constant maturity | Basis | Variance

  Results from FactBites:
 
GENESIS FX CONTROLS (3952 words)
The option is activated (knocked-in) and becomes capable of exercise or terminated (knocked-out) and becomes incapable of exercise as the option is moving out-of-the-money.
The option is activated (knocked-in) and becomes capable of exercise or terminated (knocked-out) and becomes incapable of exercise as the option is moving further into-the-money.
The option is cash settled at expiry by comparing the strike price with the average of a pre-determined series of spot rates, observed over the lifetime of the option.
No Title (263 words)
In a two-currency market, the foreign exchange option symmetry is formalized in terms of changes of bases in a certain vector lattice of abstract payoffs with the change-of-basis operator being the one-dimensional Kelvin transform.
In a multiple-currency market, the foreign exchange option symmetry is formalized in terms of differential geometry on graphs, that is, in terms of vector lattice bundles on graphs and connections on these bundles.
The practical applications of the foreign exchange option symmetry range from the detection of a new type of true arbitrage to the detection of inconsistent models of foreign exchange option markets and the development of algorithms and software to value and analyze portfolios of foreign exchange options.
  More results at FactBites »


 
 

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