Tier-1 dealers — who prices the currency market

When you click "buy" on EUR/USD, the price you see does not come from an exchange. It is set by a dozen-or-so commercial banks that price the currency market for the whole world, every single day. These are the tier-1 dealers — JPMorgan, UBS, Citi, Deutsche Bank, Goldman Sachs and a handful of others. Together they push most of the world's foreign-exchange turnover through their own books. This article explains who they are, why the hierarchy is so stable and how it looks from a smaller market's vantage point.

Who the tier-1 dealers are

On the institutional side that prices the market daily, a dozen-or-so commercial banks dominate. That is not loose shorthand — it is a measurable concentration. The annual ranking of FX dealers has been run for years by Euromoney, and its 2024 survey shows just how narrow the top of the field really is.

Behind them stand HSBC, Bank of America, Barclays, BNP Paribas and Morgan Stanley. Add the top ten together and you reach roughly two-thirds of inter-dealer turnover. In other words, the liquidity that every market participant indirectly relies on — from a pension fund down to an individual trader on a retail account — is managed by a group small enough to fit in a single conference room.

Why the hierarchy does not change

The most interesting thing about these numbers is not who sits first, but how slowly they move from year to year. The shares do not shift abruptly, because a tier-1 dealer rests on three pillars that a newcomer cannot simply replicate. Each one costs billions and takes years to build, and together they form a barrier to entry that is, in practice, impossible to clear.

A balance sheet measured in trillions of dollars. To quote large trades on both sides and carry the risk between the moment a client buys and the moment the other side appears, a dealer needs enormous capital and access to cheap funding. A smaller bank cannot hold the positions that a tier-1 dealer closes out routinely within seconds.

A network of desks running around the clock. The currency market never closes for the night. A tier-1 dealer keeps trading desks in London, New York, Tokyo and Singapore that hand the book to one another as the Earth turns. When the London session winds down, New York takes over, then Asia. The client gets a price at any hour — and that is only possible with a physical presence in the world's key markets.

"The dealer network is so densely connected that even small flows can produce large price moves." — Hyun Song Shin, BIS Chief Economist, 2022.

Quoting technology. The third pillar is the least visible and often the most important. A tier-1 dealer runs systems that stream prices to hundreds of clients at once — funds, corporations, smaller banks, brokers. This is not a human typing in a rate; it is infrastructure refreshing thousands of quotes per second and making sure the bank is never left with an unbalanced position. Combine that with the balance sheet and the global network of desks, and you understand why the same ten names stay at the top for years.

This arrangement is tightly bound to how the interbank market works — it is there that dealers trade among themselves and set the prices that later flow downstream. Alongside the lit venues, a portion of interbank flow also crosses through what are known as dark pools in forex — non-public platforms whose existence many retail traders never consider.

How it looks from a smaller market

From the vantage point of a market like Poland, the picture is simple, and it is worth getting straight once and for all. A domestic bank is not itself a tier-1 dealer. It usually buys liquidity from one or two top dealers and quotes its own clients on that basis. Put differently: the rate at which a local company swaps euros for its home currency is a derivative of a price first posted by one of the banks on the Euromoney ranking.

That dependence runs further down the chain. The retail broker an individual trades through has no direct access to tier-1 either — it sources liquidity through intermediaries or nets orders internally. The mechanism that gives large players access to many dealers at once I cover separately under prime brokerage. For you the key takeaway is one sentence: the longer the chain between you and a tier-1 dealer, the wider the spread you pay.

What this means for an individual trader

Understanding this structure changes the way you look at your own account. First, the spread you pay is neither random nor a broker's spite — it is a tier-1 dealer's price plus successive layers of markup. An indirect window into how large groups at that level position themselves is the weekly COT (Commitment of Traders) report, which shows how the major trader categories are positioned in currency futures. Understanding how the liquidity chain actually works also helps dispel a widespread retail myth: traders regularly suspect brokers of deliberately hunting their stop-losses, when the explanation usually lies in normal market mechanics rather than broker misconduct. Second, the quality of your order execution depends on how deep the liquidity at the top is at that exact moment. During the hours when the London and New York desks are both working, quotes are densest and slippage is smallest.

Third, you cannot compete with tier-1 on their own ground — on speed and scale. What you can do is play where their edge fades: on higher timeframes and on fundamentals rather than on fractions of a second. The same logic applies to the race against the firms that supply much of the liquidity on the interbank, which I describe under algorithmic trading firms.

If you want to see how all of these players fit together in one place, the market participants overview on ForexMechanics maps out the full liquidity chain — from dealers down to domestic banks, brokers and the individual trader.

What to do after closing this article

1. Check who supplies your broker's liquidity. Go to its website and look for a section on liquidity providers or its order-execution model. If you see the names of banks from the top of the ranking, your broker sits close to the source. If there is no mention of it at all — that, too, is information worth remembering.
2. Compare the EUR/USD spread at two different times. Note the figure once in the middle of the London session (around 10:00 GMT) and once late in the evening, when only Asia is active. You will see with your own eyes how the depth of tier-1 liquidity translates into the cost of your trade.
3. Match your trading hours to dealer activity. Plan to open positions in the 13:00–16:00 GMT window, when the London and New York sessions overlap. That is when quotes are tightest and execution most reliable — because every key tier-1 desk is working at the same time.