Abstract:An overview of the forex market's multi-tier structure, from central banks and interbank dealers to hedge funds, corporations, and retail traders. A hypothetical order shows how retail trades are routed, and common misunderstandings are addressed.

Many beginners picture the forex market as a single exchange where everyone trades together. In reality, it is a decentralized, multi‑tier network whose participants range from central banks to retail traders. The market on your screen is only the surface of a deep hierarchy, with different players acting for completely different reasons.
Understanding who is on the other side of your trade explains why prices move, why spreads exist, and why news causes sudden gaps.
Forex players can be grouped into layers, each with a distinct role and influence on price.

Hypothetical breakdown based on BIS data; actual shares fluctuate.
Assume you open your platform and place a buy order for 100,000 EUR/USD (1 standard lot) at the reference price 1.1535. Your broker may act as a market maker, instantly taking the other side internally, or as an ECN/STP broker, sending the order to a liquidity pool of banks and non‑bank providers.
Either way, your 100,000 units are a drop in the ocean. The broker aggregates many such small trades and hedges the net exposure with a prime brokerage at a major bank. (Prime brokerage is a service that lets smaller institutions access the interbank market through a larger bank.) That bank may then offset the risk with another bank in the interbank market, dealing in chunks of several millions.
Now imagine a European manufacturer needs to convert $100 million to euros for an acquisition. It calls its relationship bank, which quotes an institutional rate and executes a trade a thousand times larger than your retail order. That corporate transaction can drain available euros and nudge EUR/USD higher. The bank then hedges its own risks, triggering a cascade that ripples across the market.
The spread, the difference between the buy (ask) and sell (bid) price, reflects your tier in this structure. Banks quote very narrow spreads to their biggest clients but wider ones to retail aggregators. So, the 1.2‑pip EUR/USD spread you see covers multiple layers of cost. The corporate treasurer, trading directly with the bank, might get only 0.1 pips.
Not every retail trade reaches the interbank; many are netted internally. Yet the pricing on your screen is derived from interbank quotes streamed through your broker‘s liquidity pool. Big players’ actions still reach you.
Grasping who really moves forex helps you see why prices gap, why spreads widen at news events, and why certain levels hold or break. The market is a hierarchy, and retail traders sit at the edge. That is not a disadvantage, by accepting your place, you can focus on risk management and execution instead of fighting forces beyond your control. You benefit every time you enjoy tight spreads and deep liquidity, services made possible by the layers above you.