HIGH RISK WARNING: Foreign exchange trading carries a high level of risk that may not be suitable for all investors. Leverage creates additional risk and loss exposure. Before you decide to trade foreign exchange, carefully consider your investment objectives, experience level, and risk tolerance. You could lose some or all of your initial investment; do not invest money that you cannot afford to lose. Educate yourself on the risks associated with foreign exchange trading, and seek advice from an independent financial or tax advisor if you have any questions.
When the USD is listed second in the pair, as in the EUR/USD or AUD/USD, the value of the pip is fixed. If you hold a 1000 micro lot, each pip movement is worth $0.10. If you hold a 10,000 mini lot then each pip is worth $1. If you hold a 100,000 standard lot then each pip move is worth $10. Pip values can vary by price and pair, so knowing the pip value of the pair you're trading is critical in determining position size and risk.

^ The total sum is 200% because each currency trade always involves a currency pair; one currency is sold (e.g. US$) and another bought (€). Therefore each trade is counted twice, once under the sold currency ($) and once under the bought currency (€). The percentages above are the percent of trades involving that currency regardless of whether it is bought or sold, e.g. the U.S. Dollar is bought or sold in 87% of all trades, whereas the Euro is bought or sold 31% of the time.

The four major forex exchanges are located in New York, London, Singapore and Tokyo. When more than one exchange is simultaneously open, this not only increases trading volume, it also spikes volatility (the extent and rate at which equity or currency prices change), which likewise benefits forex traders. This may seem paradoxical. After all, investors generally fear market volatility. But in the forex game, greater volatility translates to greater payoff opportunities.
National central banks play an important role in the foreign exchange markets. They try to control the money supply, inflation, and/or interest rates and often have official or unofficial target rates for their currencies. They can use their often substantial foreign exchange reserves to stabilize the market. Nevertheless, the effectiveness of central bank "stabilizing speculation" is doubtful because central banks do not go bankrupt if they make large losses as other traders would. There is also no convincing evidence that they actually make a profit from trading.
If the velocity of your trades necessitates low fees, know that you will be sacrificing some educational resources in favor of a streamlined system designed for the pros. You’ll be jumping in with both feet. On the other hand, a low minimum account typically comes with the educational resources and communication channels required by new forex investors. The identity of different brokerages rest on the type of investors they aim to appeal to. Choose accordingly.

Turnover of exchange-traded foreign exchange futures and options has grown rapidly in recent years, reaching $166 billion in April 2010 (double the turnover recorded in April 2007). As of April 2016, exchange-traded currency derivatives represent 2% of OTC foreign exchange turnover. Foreign exchange futures contracts were introduced in 1972 at the Chicago Mercantile Exchange and are traded more than to most other futures contracts.
You may have noticed that the value of currencies goes up and down every day. What most people don't realize is that there is a foreign exchange market - or 'Forex' for short - where you can potentially profit from the movement of these currencies. The best known example is George Soros who made a billion dollars in a day by trading currencies. Be aware, however, that currency trading involves significant risk and individuals can lose a substantial part of their investment. As technologies have improved, the Forex market has become more accessible resulting in an unprecedented growth in online trading. One of the great things about trading currencies now is that you no longer have to be a big money manager to trade this market; traders and investors like you and I can trade this market.
The Forex market is the largest financial market on Earth. Its average daily trading volume is more than $3.2 trillion. Compare that with the New York Stock Exchange, which only has an average daily trading volume of $55 billion. In fact, if you were to put ALL of the world's equity and futures markets together, their combined trading volume would only equal a QUARTER of the Forex market. Why is size important? Because there are so many buyers and sellers that transaction prices are kept low. If you're wondering how trading the Forex market is different then trading stocks, here are a few major benefits.
On 1 January 1981, as part of changes beginning during 1978, the People's Bank of China allowed certain domestic "enterprises" to participate in foreign exchange trading.[51][52] Sometime during 1981, the South Korean government ended Forex controls and allowed free trade to occur for the first time. During 1988, the country's government accepted the IMF quota for international trade.[53]

The forex market is the market in which participants can buy, sell, exchange, and speculate on currencies. The forex market is made up of banks, commercial companies, central banks, investment management firms, hedge funds, and retail forex brokers and investors. The currency market is considered to be the largest financial market with over $5 trillion in daily transactions, which is more than the futures and equity markets combined.
The Tokyo session follows shortly after. This session is also called the Asian session, because right after Tokyo large economic hubs like Singapore and Hong Kong start waking up. The Asian session starts around 00:00 GMT time, when most of Europe is in a deep sleep. This is why you often hear European traders talking about waking up at 3am to trade the Asian session before going back to bed.
How much each pip is worth is called the "pip value." For any pair where the USD is listed second in the currency pair, the above-mentioned pip values apply. If the USD is listed first, the pip value may be slightly different. To find the pip value of the USD/CHF for example, divide the normal pip value (mentioned above) by the current USD/CHF exchange rate. For example, a micro lot is worth $0.10/0.9435 = $0.1060, where 0.9435 is the current price of the pair and subject to change. For JPY pairs (USD/JPY), go through this same process, but then multiply by 100. For a more detailed explanation, see Calculating Pip Value for Different Forex Pairs and Account Currencies.
All forex trades involve two currencies because you're betting on the value of a currency against another. Think of EUR/USD, the most-traded currency pair in the world. EUR, the first currency in the pair, is the base, and USD, the second, is the counter. When you see a price quoted on your platform, that price is how much one euro is worth in US dollars. You always see two prices because one is the buy price and one is the sell. The difference between the two is the spread. When you click buy or sell, you are buying or selling the first currency in the pair.