Every market you have heard of has a building. The New York Stock Exchange has a floor, a bell, and a closing price. The foreign exchange market has none of these. It is the largest market on earth — roughly $7.5 trillion changes hands every day — and it has no exchange at all.
A network, not a place
Forex is what is called an over-the-counter market. Instead of every order meeting in one central book, trading happens through a web of banks, brokers, funds and companies dealing directly with each other. A price is simply what two parties agree on.
This sounds chaotic and mostly is not, because a small number of very large banks quote prices continuously and compete with each other to do it. That competition keeps quotes tight and consistent. But it has one consequence worth internalising early: there is no single official price. Your broker's EUR/USD and another broker's EUR/USD will differ slightly, because each is quoting from its own set of liquidity providers.
That is also why forex has no reliable volume figure. On a stock exchange, every share traded is recorded in one place. In forex, nobody sees the whole market, so "volume" on a currency chart means the volume your broker saw — a sample, not a total.
Why it never closes
Because the market is a network rather than a venue, it runs wherever banks are awake. Trading opens in Sydney on Monday morning, moves to Tokyo, then London, then New York, and closes on Friday evening in New York — a continuous 24-hour cycle, five days a week.
The practical effect is that liquidity moves around the clock. The London session overlaps New York for a few hours each day, and that overlap is when the largest share of daily volume trades. The same pair can be sleepy at one hour and violent at another, with no change in the news.
What you are actually trading
A currency has no price on its own. Asking "what is the dollar worth?" is like asking how tall something is without saying compared to what. So currencies are always quoted in pairs, and every trade is simultaneously a purchase of one currency and a sale of another.
When you buy EUR/USD, you are buying euros and paying for them with dollars. If the euro strengthens against the dollar, you profit. If the dollar strengthens, you lose. There is no way to be "long" in forex without being short something else — the structure does not allow it.
This is why currency analysis is always relative. A weak euro chart may reflect a genuinely weak euro, or a very strong dollar, or both. Reading one pair alone will regularly mislead you about which currency is doing the moving.
Who is on the other side
Most forex volume has nothing to do with speculation. Companies convert revenue, importers pay suppliers, funds hedge foreign holdings, and central banks manage reserves. These participants trade because they need the currency, not because they have a view on it.
Retail traders are a small slice of that total. This matters for expectations: the market is not moved by people like you, and no amount of retail positioning will push a major pair. You are reading a current, not creating one.
What to take from this
- There is no central exchange and no official price — quotes are broker-specific.
- Volume on a forex chart is your broker's sample, not the market's total.
- The market runs 24 hours on weekdays, but liquidity is concentrated in session overlaps.
- Every trade is a pair trade: you are always long one currency and short another.
- Most participants are not speculating, which is why the market is deep and hard to push.
Next we look at how a pair is actually quoted — which side is which, what the two prices on your screen mean, and where the broker's fee is hiding.