Recently studying financial markets, I found that the foreign exchange market is truly fascinating. In simple terms, foreign exchange in English is Foreign Exchange—also known as Forex or FX—meaning the use of one currency to exchange for another. But forex trading is not just exchanging money; it’s an investment approach that profits from price differences driven by exchange rate fluctuations.

Here’s a simple example. If you’re traveling abroad, when you exchange money at the airport, you’re participating in the foreign exchange market. You watch the exchange-rate board, exchange New Taiwan Dollars for US dollars, and that process is forex trading. Exchange rates change every second, because they are constantly affected by factors such as a country’s economic strength, policies, and international relations.

The forex market is really huge. The daily trading volume reaches 6.6 trillion USD, which is far more than 22.4 billion USD on the New York Stock Exchange. Moreover, this market is a global, decentralized market that is open almost all the time. Trading runs 5 days a week, 24 hours a day without interruption—starting from when the market opens in Australia and continuing until it closes in New York—so traders can operate anytime and anywhere.

Why do so many people focus on forex trading? Mainly because it has several obvious advantages. First, trading costs are very low: there are no commissions, and the bid-ask spread is usually less than 0.1%. Second, there’s no specific minimum trading size requirement—you can start with a very small position. Most importantly, it offers leverage. A 50:1 leverage means you can control a 2,500 USD position with only 50 USD in margin. Plus, with extremely strong market liquidity, buying and selling can be completed instantly.

Forex trading is all about currencies. The main currencies include the US dollar, the euro, the British pound, the Japanese yen, and so on, representing the world’s largest economies. Each currency has a three-letter code, such as the US dollar’s USD, which is US (United States) plus D (Dollar). This set of ISO 4271 currency code standards has been used since 1973.

Compared with the stock market, forex trading has more advantages. The stock market is only open at specific times, but the forex market operates 24 hours a day. Stock trading is heavily influenced by analysts’ views, whereas in the forex market—because of its massive scale—the influence of analysts is relatively smaller. And the forex market has no special restrictions on short selling, so regardless of how the market moves, there are opportunities.

Compared with the futures market, the forex market has stronger liquidity and more transparent trading. The futures market has only 30 billion USD in daily trading volume, far less than forex’s 6.6 trillion. Risk management in the forex spot market is also more complete: when losses exceed the margin requirement, positions are automatically closed to protect investors.

To be honest, as the world’s largest financial investment market, the forex market has already become an effective investment channel for global investors because it offers high transparency and low entry costs. If you’re interested in financial markets, the basic knowledge of forex in English is definitely worth learning.