Posts Tagged ‘banks’

Triangular arbitrage

Sunday, February 7th, 2010

Triangular arbitrage (sometimes called triangle arbitrage) refers to taking advantage of a state of imbalance between three foreign exchange markets: a combination of matching deals are struck that exploit the imbalance, the profit being the difference between the market prices.

Triangular arbitrage offers a risk-free profit (in theory), so opportunities for triangular arbitrage usually disappear quickly, as many people are looking for them, or simply never occur as everybody knows the pricing relation.

Example

Consider the three foreign exchange rates among the Canadian dollar, the U.S. dollar, and the Australian dollar. Triangular arbitrage will produce a profit whenever the following relation does not hold:

CD$/US$ * AU$/CD$ = AU$/US$.

For example if you can trade at these exchange rates

* the Canadian Dollar (CD$) against the US dollar (US$) is CD$1.13/US$1.00 (1 US$ gets you CD$1.13)
* the Australian Dollar (AU$) against the US dollar (US$) is AU$1.33/US$1.00 (1 US$ gets you AU$1.33)
* the Australian Dollar (AU$) against the Canadian Dollar (CD$) is AU$1.18/CD$1.00 (1 CD$ gets you AU$1.18)

1.13 * 1.18 = 1.3334 > 1.3300, thus mispricing has occurred.

To take advantage of the mispricing, starting with US$10,000 to invest:

* 1st buy Canadian Dollars with his US Dollars: US$10,000 * (CD$1.13/US$1) = CD$11,300
* 2nd buy Australian Dollars with his Canadian Dollars: CD$11,300 * (AU$1.18/CD$1.00) = AU$13,334
* 3rd buy US Dollars with his Australian Dollars: AU$13,334 / (AU$1.33/US$1.0000) = US$10,025
* Net risk free profit: US$25.00

A profit maximizing trader presented with these prices will trade up to the maximum size possible, or equivalently do the trade as many times as possible, until one of the traders on the other side of one of the deals changes his price. In practice currencies are quoted with a bid ask spread, so a trader should be careful that he is actually buying at the quoted ask price, and selling at the quoted bid price. Other transaction costs, such as commissions often prevent the trade from being profitable.

Interbank market

Wednesday, August 5th, 2009

The interbank market is the top-level foreign exchange market where banks exchange different currencies. The banks can either deal with one another directly, or through electronic brokering platforms. The Electronic Brokering Services (EBS) and Reuters Dealing 3000 Matching are the two competitors in the electronic brokering platform business and together connect over 1000 banks. The currencies of most developed countries have floating exchange rates. These currencies do not have fixed values but, rather, values that fluctuate relative to other currencies.

The interbank market is an important segment of the foreign exchange market. It is a wholesale market through which most currency transactions are channeled. It is mainly used for trading among bankers. The 3 main constituents of the interbank market are

* the spot market
* the forward market
* SWIFT (Society for World-Wide Interbank Financial Telecommunications)

The interbank market is unregulated and decentralized. There is no specific location or exchange where these currency transactions take place. However, foreign currency options are regulated in the United States and trade on the Philadelphia Stock Exchange. Further, in the U.S., the Federal Reserve Bank publishes closing spot prices on a daily basis.


Market makers

Unlike the Stock Market, the Foreign Currency Exchange Market (Forex) does not have a physical central exchange like the NYSE does at 11 Wall Street. Without a central exchange, currency exchange rates are made, or set, by market makers. Banks constantly quote a bid and ask price based on anticipated currency movements taking place and thereby make the market. Major Banks like UBS, Barclays Capital, Deutsche Bank and Citigroup handle very large currency trading (forex) transactions often in billions of dollars.
These transactions cause the primary movement of currency prices.

Other factors contribute to currency exchange rates and these include forex transactions made by smaller banks, hedge funds, companies, forex brokers and traders. Companies are involved in forex transaction due to their need to pay for products and services supplied from other countries which use a different currency. Forex traders on the other hand use forex transaction, of a much smaller volume with comparison to banks, to benefit from anticipated currency movements by buying cheap and selling at a higher price or vice versa. This is done through forex brokers who act as a mediator between a pool of traders and also between themselves and banks.

Central banks also play a role in setting currency exchange rates by altering interest rates. By increasing interest rates they stimulate traders to buy their currency as it provides a high return on investment and this drives the value of the corresponding central bank’s currency higher with comparison to other currencies.