The EUR/USD pair is closing a second consecutive week with gains at around 1.1070, retreating from a high at 1.1109. A scarce macroeconomic calendar kept the pair in a dull range during the first half of the week, also the wait and see stance ahead of the ECB monetary policy decision on Thursday. One done, one to go, as the US Federal Reserve will be announcing its decision on monetary policy next Wednesday, September 18.
This information can then allow traders to make judgements regarding a currency pair's price movement. For example, if a Japanese candlestick closes near the highest price for the period, that would imply that there is a strong interest on the part of buyers for this currency pair during that time period. A trader might then decide to open a long trade to take advantage of that interest.

None of the models developed so far succeed to explain exchange rates and volatility in the longer time frames. For shorter time frames (less than a few days), algorithms can be devised to predict prices. It is understood from the above models that many macroeconomic factors affect the exchange rates and in the end currency prices are a result of dual forces of supply and demand. The world's currency markets can be viewed as a huge melting pot: in a large and ever-changing mix of current events, supply and demand factors are constantly shifting, and the price of one currency in relation to another shifts accordingly. No other market encompasses (and distills) as much of what is going on in the world at any given time as foreign exchange.[71]
Forex is a portmanteau of foreign currency and exchange. Foreign exchange is the process of changing one currency into another currency for a variety of reasons, usually for commerce, trading, or tourism. According to a recent triennial report from the Bank for International Settlements (a global bank for national central banks), the average was more than $5.1 trillion in daily forex trading volume.