วันศุกร์ที่ 5 ธันวาคม พ.ศ. 2551

Short data about the origin and development of the currency exchange market

Currency trading has a long history and can be traced back to the ancient Middle East and Middle Ages when foreign exchange started to take shape after the international merchant bankers devised bills of exchange, which were transferable third-party payments that allowed flexibility and growth in foreign exchange dealings.

The modern foreign exchange market characterized by periods of high volatility (that is a frequency and an amplitude of a price alteration) and relative stability formed itself in the twentieth century. By the mid-1930s the British capital London became to be the leading center for foreign exchange and the British pound served as the currency to trade and to keep as a reserve currency. Because in the old times foreign exchange was traded on the telex machines, or cable, the pound has generally the nickname “cable”.

After the World War II, where the British economy was destroyed and the United States was the only country unscarred by war, U.S. dollar, in accordance with the Breton Woods Accord between the USA, Great Britain and France (1944) became the reserve currency for all the capitalist countries and all currencies were pegged to the American dollar (through the constitution of currencies ranges maintained by central banks of relevant countries by means of the interventions or currency purchases). In turn, the U.S. dollar was pegged to gold at $35 per ounce. Thus, the U.S. dollar became the world's reserve currency. In accordance with the same agreement was organized the International Monetary Fund (IMF) rendering now a significant financial support to the developing and former socialist countries effecting economical transformation.

To execute these goals the IMF uses such instruments as Reserve trenches, which allows a member to draw on its own reserve asset quota at the time of payment, Credit trenches drawings and stand-by arrangements. The letters are the standard form of IMF loans unlike of those as the compensatory financing facility extends financial help to countries with temporary problems generated by reductions in export revenues, the buffer stock financing facility which is geared toward assisting the stocking up on primary commodities in order to ensure price stability in a specific commodity and the extended facility designed to assist members with financial problems in amounts or for periods exceeding the scope of the other facilities.

At the end of the 70-s the free-floating of currencies was officially mandated that became the most important landmark in the history of financial markets in the XX century lead to the formation of Forex in the contemporary understanding. That is the currency may be traded by anybody and its value is a function of the current supply and demand forces in the market, and there are no specific intervention points that have to be observed. Foreign exchange has experienced spectacular growth in volume ever since currencies were allowed to float freely against each other. While the daily turnover in 1977 was U.S. $5 billion, it increased to U.S. $600 billion in 1987, reached the U.S. $1 trillion mark in September 1992, and stabilized at around $1.5 trillion by the year 2000.

Main factors influences on this spectacular growth in volume are mentioned below. A significant role belonged to the increased volatility of currencies rates, growing mutual influence of different economies on bank-rates established by central banks, which affect essentially currencies exchange rates, more intense competition on goods markets and, at the same time, amalgamation of the corporations of different countries, technological revolution in the sphere of the currencies trading. The latter exposed in the development of automated dealing systems and the transition to the currency trading by means of the Internet. In addition to the dealing systems, matching systems simultaneously connect all traders around the world, electronically duplicating the brokers' market.

Advances in technology, computer software, and telecommunications and increased experience have increased the level of traders' sophistication, their ability to both generate profits and properly handle the exchange risks. Therefore, trading sophistication led toward volume increase.

Risks by the foreign exchange on Forex

The Forex is essentially risk-bearing. By the evaluation of the grade of a possible risk accounted should be the following kinds of it: exchange rate risk, interest rate risk, and credit risk, country risk.

Exchange rate risk. Exchange rate risk is the effect of the continuous shift in the worldwide market supply and demand balance on an outstanding foreign exchange position. For the period it is outstanding, the position will be subject to all the price changes. The most popular measures to cut losses short and ride profitable positions that losses should be kept within manageable limits are the position limit and the loss limit. By the position limitation a maximum amount of a certain currency a trader is allowed to carry at any single time during the regular trading hours is to be established. The loss limit is a measure designed to avoid unsustainable losses made by traders by means of stop-loss levels setting.

Interest rate risk. Interest rate risk refers to the profit and loss generated by fluctuations in the forward spreads, along with forward amount mismatches and maturity gaps among transactions in the foreign exchange book. This risk is pertinent to currency swaps, forward outright, futures, and options (See below). To minimize interest rate risk, one sets limits on the total size of mismatches. A common approach is to separate the mismatches, based on their maturity dates, into up to six months and past six months. All the transactions are entered in computerized systems in order to calculate the positions for all the dates of the delivery, gains and losses. Continuous analysis of the interest rate environment is necessary to forecast any changes that may impact on the outstanding gaps.

Credit risk. Credit risk refers to the possibility that an outstanding currency position may not be repaid as agreed, due to a voluntary or involuntary action by a counter party. In these cases, trading occurs on regulated exchanges, such as the clearinghouse of Chicago. The following forms of credit risk are known:

1. Replacement risk occurs when counterparties of the failed bank find their books are subjected to the danger not to get refunds from the bank, where appropriate accounts became unbalanced.

2. Settlement risk occurs because of the time zones on different continents. Consequently, currencies may be traded at the different price at different times during the trading day. Australian and New Zealand dollars are credited first, then Japanese yen, followed by the European currencies and ending with the U.S. dollar. Therefore, payment may be made to a party that will declare insolvency (or be declared insolvent) immediately after, but prior to executing its own payments.

Therefore in assessing the credit risk, end users must consider not only the market value of their currency portfolios, but also the potential exposure of these portfolios. The potential exposure may be determined through probability analysis over the time to maturity of the outstanding position. The computerized systems currently available are very useful in implementing credit risk policies. Credit lines are easily monitored. In addition, the matching systems introduced in foreign exchange since April 1993 are used by traders for credit policy implementation as well. Traders input the total line of credit for a specific counterparty. During the trading session, the line of credit is automatically adjusted. If the line is fully used, the system will prevent the trader from further dealing with that counterparty. After maturity, the credit line reverts to its original level.

Dictatorship risk. Dictatorship (sovereign) risk refers to the government's interference in the Forex activity. Although theoretically present in all foreign exchange instruments, currency futures are, for all practical purposes, excepted from country risk, because the major currency futures markets are located in the USA. Hence, traders have to realize that kind of the risk and be in state to account possible administrative restrictions.