The forex market is the world's largest and most liquid financial market, with about $9.5 trillion traded a day (BIS, 2025). Unlike stock exchanges with central locations, forex operates as a global electronic network. Understanding its structure helps you trade more effectively.
The Decentralized Market
Forex has no central exchange like the New York Stock Exchange. Instead, it operates as an over-the-counter (OTC) market where participants trade directly with each other through electronic networks.
What This Means:
- Trading happens across multiple financial centers worldwide
- No single entity controls prices
- Markets remain open 24 hours (Monday through Friday)
- Different venues may have slightly different prices
Market Participants
Tier 1: Central Banks
Central banks like the Federal Reserve, ECB, and Bank of Japan are the biggest players. They:
- Set interest rates affecting currency values
- Intervene to stabilize or adjust their currency
- Manage foreign exchange reserves
- Issue monetary policy statements
Tier 2: Major Banks (Interbank Market)
Large commercial and investment banks form the interbank market:
- JP Morgan, Deutsche Bank, Citibank, etc.
- Trade massive volumes for themselves and clients
- Provide liquidity to the market
- Set the "real" market prices
Tier 3: Corporations
Multinational companies exchange currencies for:
- Paying for imports
- Converting export revenues
- Hedging future currency exposure
- International payroll and operations
Tier 4: Hedge Funds and Asset Managers
Professional traders seeking profit from currency movements:
- Speculate on economic trends
- Hedge other investment positions
- Move large amounts of capital
- Can impact short-term price movements
Tier 5: Retail Traders
Individual traders like you:
- Trade through online brokers
- Smallest market participants
- Growing in number due to internet access
- Usually trade with leverage
How Currency Prices Move
Currency prices change based on supply and demand:
Currency Strengthens When:
- Higher interest rates attract investment
- Strong economic growth
- Political stability
- Trade surplus
- Central bank buying
Currency Weakens When:
- Lower interest rates
- Weak economic data
- Political uncertainty
- Trade deficit
- Central bank selling
The Interbank Market
The interbank market is where the real forex action happens:
- Banks trade directly with each other
- They quote bid and ask prices
- Prices constantly adjust based on trades
- These prices cascade down to retail traders
When you see EUR/USD at 1.1000, that price originated from interbank trading and reached you through your broker's connection to liquidity providers.
Liquidity Providers
Liquidity providers (LPs) bridge the gap between interbank markets and retail brokers:
Their Role:
- Aggregate prices from multiple banks
- Provide consistent quotes to brokers
- Ensure orders can be filled
- Reduce counterparty risk
Examples:
- Large banks (Citibank, JPMorgan)
- Specialized firms (Currenex, LMAX)
- Electronic networks (EBS, Reuters)
Price Discovery
Unlike stocks with a single exchange price, forex prices emerge from competition among market makers:
- Banks compete for business by offering tight spreads
- Electronic platforms match buyers and sellers
- Supply and demand determine the momentary price
- Prices converge across venues through arbitrage
This creates efficient pricing across the global market.
Market Liquidity
Liquidity varies throughout the day:
Most Liquid:
- London/New York overlap (highest volume)
- Major news releases
- Central bank announcements
Least Liquid:
- Late Friday afternoon
- Holiday periods
- Asian session for EUR/USD
- Exotic currency pairs
Higher liquidity means tighter spreads and better execution.
The Settlement Process
Forex trades technically settle in two business days (T+2):
- You execute a trade today
- Currency exchange officially happens in 2 days
- In practice, retail trades are "rolled over" indefinitely
- You pay or receive swap rates for holding past settlement
Retail traders never take actual currency delivery—it's all electronic.
Key Takeaways
- Forex is a decentralized over-the-counter market
- Central banks and major banks drive prices
- Supply and demand determine currency values
- Liquidity varies by session and currency pair
- Prices cascade from interbank markets to retail traders
- The market operates 24/5 through global financial centers
What's Next?
Learn about forex market hours and sessions to understand when to trade for the best conditions.
This article is for educational purposes only and does not constitute financial advice.