How Does the Forex Market Work? Hours, Players & Price Movements

There is no building where forex trading happens. No opening bell. No single person running it. The forex market is a living, breathing global network that processes $9.6 trillion every single day — and it never stops during the week.

That figure comes from the Bank for International Settlements 2025 Triennial Survey. It is up 28% from the 2022 number of $7.5 trillion, which makes the forex market not just the largest financial market in the world but one of the fastest-growing.

If you want to trade forex seriously, understanding how this market actually functions is the most important thing you can do before you place a single trade. Not the most exciting thing, maybe. But the most important. The traders who lose money consistently are almost always the ones who jumped into trades before they understood the structure of what they were operating inside.

This guide will fix that. By the time you finish reading, you will know exactly how forex works, who is moving prices, when the market is at its best, and what actually causes a currency to go up or down.

$9.6 Trillion Average daily forex trading volume — BIS Triennial Survey, April 2025 Average daily forex trading volume — BIS Triennial Survey, April 2025

+28% Growth from 2022 to 2025 — the market's fastest three-year expansion ever recordedGrowth from 2022 to 2025 — the market's fastest three-year expansion ever recorded

The Core Mechanism: How Forex Transactions Actually Work

Forex trading is the act of buying one currency while simultaneously selling another. Every single trade in this market involves a pair of currencies, never just one.

You have seen currency pair names like EUR/USD or GBP/JPY. The first currency is the base currency. The second is the quote currency. The price of the pair tells you exactly how much of the quote currency one unit of the base currency is worth right now.

So when EUR/USD is trading at 1.0850, it means 1 euro currently buys 1.0850 US dollars. If you believe the euro will strengthen against the dollar, you buy EUR/USD. If the price moves to 1.1000 and you close the trade, the difference of 150 pips is your profit. If it moves to 1.0700, that 150 pips goes against you.

There is no central exchange where this happens. Unlike the New York Stock Exchange, which has a physical location and defined opening hours, forex runs entirely over the counter (OTC). Trades execute electronically through a global network of banks, brokers, and electronic platforms. This is why forex runs 24 hours a day during the working week. When one financial centre closes, another one opens, and the market keeps going.

"The forex market is essentially a global auction running in real time, 24 hours a day, five days a week. Every bid and ask posted is someone's view of what a currency is worth at that precise moment, and price is simply the level where buyers and sellers agree." — Kathy Lien, Managing Director of FX Strategy at BK Asset Management

The Four Trading Sessions: When the Market Is Open and Active

Because forex is a global market spread across every time zone, it is organised into four major sessions that pass the baton to each other around the clock. Each session has its own character, its own level of activity, and its own set of currency pairs that move most during that window.

• Sydney Session – Opens at 22:00 GMT and closes at 07:00 GMT. The most active pairs are AUD/USD, NZD/USD, and AUD/JPY. This is the lightest trading session, contributing around 4% of daily market volume.

• Tokyo Session – Opens at 00:00 GMT and closes at 09:00 GMT. Popular trading pairs during this session include USD/JPY, EUR/JPY, and GBP/JPY. It contributes around 6% to 8% of the daily trading volume.

• London Session – Opens at 07:00 GMT and closes at 17:00 GMT. The most traded pairs are EUR/USD, GBP/USD, and EUR/GBP. This is the busiest Forex session, accounting for around 35% to 40% of daily market volume.

• New York Session – Opens at 12:00 GMT and closes at 22:00 GMT. Active pairs include EUR/USD, USD/CAD, and USD/CHF. This session contributes around 15% to 20% of daily trading volume.

London is the dominant session. It handles 35 to 40% of all global forex volume in a single day. The reason goes beyond geography. London sits at the intersection of both the Asian trading day (which is closing as London opens) and the American trading day (which opens while London is still active). This makes it the only session that connects two regional cycles in a single working day.

EUR/USD and GBP/USD set the majority of their daily range during London hours. If you are trading either of these pairs, this is the session where the most meaningful price action happens.

The London and New York Overlap: The Golden Four Hours

Between 13:00 and 17:00 GMT every weekday, both London and New York are open simultaneously. This four-hour overlap is the single most important trading window in the entire week. More than 50% of total daily forex volume concentrates into this window. EUR/USD, GBP/USD, gold (XAU/USD), and USD-based pairs move the most here. Spreads are tightest. Liquidity is deepest. If you are limited on time and can only trade one window, this is it.

Tokyo is the home of the Japanese yen. USD/JPY, EUR/JPY, and GBP/JPY are most active during this session. It is also the first full session after the weekend, which means Sunday night price gaps often resolve during Tokyo hours.

Sydney is the quietest session of the four. Volume is thin, price ranges are narrower, and spreads tend to be wider. Most experienced traders avoid Sydney unless they are specifically trading AUD or NZD pairs and have a reason tied to Australian economic data.

Who Is Actually Moving Forex Prices? The Real Players

Here is the part most beginner resources gloss over. The people sitting at home using retail trading platforms are not the ones setting prices. Retail traders account for approximately 2.5% of all forex volume, according to BIS 2025 data. The remaining 97.5% is moved by much larger participants.

Understanding who these players are changes how you read price action. You stop asking what the chart is doing and start asking who is doing it and why.

Central Banks — The Most Powerful Force

Central banks set interest rates and manage national monetary policy. When the US Federal Reserve raises rates, the US dollar almost always strengthens because higher rates attract foreign capital seeking better returns. When the Bank of Japan keeps rates near zero, the yen tends to weaken relative to higher-yielding currencies.

Central banks also intervene directly in the forex market. In 2022, the Bank of Japan intervened multiple times to stop the yen from weakening too sharply. The result was a near-instantaneous 500 pip move in USD/JPY within minutes. No retail trader saw it coming. That is the raw power of a central bank acting in the market.

Commercial Banks — The Biggest Volume Movers

Reporting dealers, which are primarily large commercial banks, account for approximately 46% of daily forex turnover according to BIS 2025 data. These banks trade for their own accounts (proprietary trading) and also execute transactions on behalf of corporate clients, asset managers, and governments. The prices you see on your MT5 platform come through these institutions.

Hedge Funds and Institutional Asset Managers

Hedge funds take large speculative positions based on macro views of the world economy. When George Soros famously shorted the British pound in 1992, he made approximately $1 billion in a single day because he understood the structural weakness of the UK's exchange rate mechanism better than the market did. Modern hedge funds run algorithmic strategies that can move markets within milliseconds.

Corporations

Every multinational company that does business across borders is constantly converting currencies. An Indian company receiving dollars for exports needs to convert those dollars to rupees. A US tech company paying European employees converts dollars to euros every month. This creates a steady, ongoing source of currency demand that is driven purely by commercial necessity, not speculation.

Retail Traders

You. Individual traders using platforms like MetaTrader 5 through regulated brokers. Small individually. But during major news events when tens of thousands of retail traders act simultaneously, the collective flow can contribute meaningfully to short-term price moves. More importantly, retail traders are most affected by what all the larger players are doing. Understanding the big players helps you trade with them rather than against them.

Commercial Banks (~46%) – The largest participants in the Forex market. Their main role is client trade execution and proprietary trading for profit.

Hedge Funds (~18%) – Focus on speculative macro trading positions to generate investment returns from market movements.

Corporations (~15%) – Use the Forex market mainly for commercial hedging and international trade settlements.

Central Banks (~10%) – Manage monetary policy and maintain currency stability in their respective countries.

Retail Traders (~2.5%) – Individual traders who participate in the market to earn profits from price fluctuations.

What Actually Makes Currency Prices Move?

This is the question that separates traders who consistently profit from those who do not. Price in forex moves because of supply and demand. The deeper question is: what creates that supply and demand? The answer is a combination of four forces that every forex trader needs to understand and watch daily.

Interest Rates: The Dominant Long-Term Driver

When a country raises interest rates, investors globally move capital into that country's bonds and savings products to capture the higher yield. This increases demand for that currency and pushes its price up. The relationship between interest rates and currency values is the most consistent and powerful force in all of forex.

A real-world example from 2022 to 2023: the US Federal Reserve raised interest rates from near zero to over 5% to combat inflation. Over that period, EUR/USD fell from 1.1500 to a low of 0.9535, a move of over 1,500 pips driven almost entirely by widening interest rate differentials between the US and the Eurozone. Traders who understood this relationship before it played out were positioned for one of the largest sustained currency moves in over a decade.

Economic Data Releases: The Weekly Catalysts

The Non Farm Payroll (NFP) report released every first Friday of the month in the US is the single most market-moving regular data release in forex. A stronger than expected NFP number typically strengthens the dollar immediately. A weaker than expected number weakens it. The same applies to inflation data (CPI), GDP figures, and retail sales numbers. These are released on a fixed schedule that every trader knows in advance through the economic calendar.

The key is not just knowing the number that was released. It is understanding whether it came in above or below what the market expected. The market moves on surprises, not on absolute values.

Geopolitical Events: The Unpredictable Force

Wars, elections, sanctions, and major policy shifts create uncertainty. When uncertainty rises, capital flows out of riskier currencies and into safe havens. The US dollar, Swiss franc, and Japanese yen are the traditional safe havens in forex. In early 2022 when Russia invaded Ukraine, EUR/USD fell sharply as capital fled European risk exposure into the dollar. During global financial crises, the yen typically strengthens as investors unwind carry trades and repatriate capital.

Market Sentiment: What the Crowd Is Feeling Right Now

Even when no news is breaking, price moves. Positioning, momentum, and psychological levels all drive intraday and short-term price action. A round number like 1.1000 on EUR/USD becomes a resistance level not because of any fundamental reason, but because thousands of traders have stop losses and take profits clustered around it. Understanding sentiment — whether the market is in risk-on mode (buying growth currencies like AUD) or risk-off mode (buying safe havens like JPY) — is as important as following the economic calendar.

"In the short run, the forex market is driven by psychology and capital flows. In the long run, by economic fundamentals. The most dangerous mistake a trader can make is to confuse which time horizon they are operating in." — Ray Dalio, Founder of Bridgewater Associates, the world's largest hedge fund by assets under management

A Real 2025 Example: How These Forces Played Out

In the first half of 2025, the European Central Bank signalled a pause in its rate-cutting cycle while the US Federal Reserve indicated it was moving toward further rate reductions. This shift changed the interest rate differential between the euro and the dollar.

Investors moved capital into European assets to capture relatively higher European yields. Demand for euros increased. EUR/USD moved from approximately 1.0750 to 1.1050 over roughly six weeks, a 300 pip rally with a clear, fundamental driver.

Traders who watched central bank communications, understood the rate differential dynamic, and positioned long EUR/USD early captured the majority of that move. Traders who only looked at the chart without context were caught off guard when their short positions were squeezed.

The chart showed you the move. The fundamentals explained why it was happening. Both together is how professional traders work.

What This Means for You as a Trader

Understanding the structure of the forex market is not just theory. It changes how you trade in practical ways.

• Time your trades: Focus your activity during the London session and the London-New York overlap. This is when liquidity is highest, spreads are tightest, and the moves you are trying to capture are most reliable.

• Follow the central banks: Before you place any trade, know what the relevant central banks have said recently and what the next scheduled decision is. Nothing moves a currency more consistently than interest rate expectations.

• Use the economic calendar: Know when major data releases are coming for any pair you trade. Holding a position into a high-impact data release without knowing it is one of the most common ways new traders blow up accounts.

• Trade with the big players: If central bank communication and recent economic data are both pointing in the same direction, that is the direction you want to be trading. The institutions will be positioned there too.

• Respect the sessions: If you are trading GBP pairs, focus on the London session. If you are trading JPY pairs, the Tokyo session is when those pairs breathe most naturally. Trade in the session that matches your pair.

"Most traders spend 90% of their time studying entry techniques and 10% of their time understanding market structure. The professionals do it the other way around. Structure first. Always." — Mark Douglas, Author of Trading in the Zone, cited by professional traders as the most important trading psychology book ever written

The Takeaway

The forex market is a 24/5 global network running $9.6 trillion a day through four overlapping sessions. Central banks, commercial banks, and hedge funds drive the vast majority of price movement. Interest rates, economic data, geopolitics, and sentiment are the forces behind every major currency move you see on a chart.

You do not need to know all of this perfectly before you take your first demo trade. But you do need to know it before you risk real money. Every element of this guide is something that will make you a better trader the moment you understand it, and it will keep paying off every single day you are in the market.

If you have not traded forex before, the right first step is a demo account on a live platform with real market data. See how price reacts to London open. Watch what happens during the NFP release. Observe a central bank decision in real time. There is no substitute for that education.

RISK DISCLAIMER

CFDs are complex instruments and carry a high risk of losing money rapidly due to leverage. A significant proportion of retail investor accounts lose money when trading CFDs. You should carefully consider whether you understand how CFDs work and whether you can afford to take the high risk of losing your money. All examples in this article are illustrative and based on real historical market events; they do not represent guaranteed or typical trading outcomes. Past performance is not indicative of future results. This content is for informational and educational purposes only and does not constitute financial advice or a trading recommendation. Always seek independent financial advice before making trading or investment decisions.