Volume, Delta and “Order Flow” on Forex and CFDs: What the Broker's Platform Really Shows

On spot forex and CFDs there's no single market and no central volume. The volume in MetaTrader is tick volume – the number of price changes at your broker. “Delta”, “footprint” or “volume profile” indicators calculated from such data are estimates, not orders that actually went through the market.

What it is

Spot forex is an over-the-counter market: banks, brokers and liquidity providers quote prices independently, and trades don't go into a single order book. Each broker sees only its own slice. A CFD is a contract with the broker, not with the market: the broker sets the price itself based on its own sources.

Tick volume counts how many times price changed within a candle. Research shows it correlates well with market activity, so it tells you something about when the market is moving. But it doesn't tell you how much money changed hands or who was aggressive.

“Delta” on such data usually comes from assuming that an uptick is a buy and a downtick a sell (the tick rule). It's an approximation, not a record of which side initiated each trade.

How people use it

volume profile and VWAP calculated from tick volume
“delta” and “footprint” indicators for MetaTrader and TradingView on currency pairs
VSA and Wyckoff on forex
“forex order flow” in courses and signals

What the research and evidence say

Tick volume is a reasonable substitute if you want to know when the market is active: studies comparing it with exchange-traded currency futures volume found a high correlation. There's no basis, however, for treating delta or a footprint from broker data as a picture of market orders. They lack the trade side, order sizes, the order book of the whole market and other participants' trades.

Weaknesses

data from a single source, not the whole market
no information on trade side or order size
delta estimated with the tick rule
the tool names suggest access to order data that isn't there

What order flow shows

Real order flow requires real data. Futures on the CME in Chicago (including currencies such as the euro or yen, and indices such as the Dow Jones) have a single central order book: every trade has a price, a size and the side that initiated it. From data like that, the footprint, delta, order book and volume profile show what really happened. That's what I work with in Sierra Chart, on paid exchange data, trade by trade.

Indicators vs order flow

Every indicator and every pattern in this section is built from the same data: a candle's open, high, low, close and sometimes volume. They're derivatives of price, showing the effect rather than the cause. Order flow looks at what price is made of: who was buying and selling aggressively (delta), where limit orders were waiting (the order book) and at which prices the market accepted trade (the volume profile).

On CME futures this data is real and comes from one central market. Spot forex doesn't have it: platforms show tick volume, the number of price changes at a single provider.

To be fair: order flow isn't the Holy Grail. It takes learning, it can be noisy, big players hide some of their orders, and an edge only comes from a process and risk control. But it gives you information that simply isn't on a candlestick chart.

How to use it sensibly

if you want to learn order flow, do it on exchange-traded futures with real data
treat tick volume only as a measure of activity
ask the indicator vendor where they get the trade side from

Glossary: Tick volume
Glossary: CFD (contract for difference)
Glossary: Futures contract
Glossary: CME Globex
Glossary: Footprint
Glossary: Delta
Atlas of biases: Illusory correlation
Atlas of biases: The illusion of knowledge
Atlas of biases: Authority bias
Order flow: Exchange or Broker: CME Futures vs CFDs and Forex with a Market Maker
Order flow: Volume profile: how to read the POC, value area, HVNs and LVNs
Also under the microscope: Scalping
Also under the microscope: Day trading
Also under the microscope: Swing trading

Frequently asked questions

Is there real volume on forex?

Not in a central sense. Spot forex is an over-the-counter market, and platforms show tick volume – the number of price changes at a single provider.

Can you trade order flow on forex?

Indicators call it that, but they calculate estimates from broker data. Real order flow in currencies can be seen in CME futures.

What is tick volume?

The number of price changes within a candle. It shows market activity well, but doesn't tell you how many contracts changed hands or who was aggressive.

How is a CFD different from a futures contract?

A CFD is an agreement with a broker who sets the price itself. A futures contract is an exchange-traded instrument with a single public order book, cleared through a clearing house.

Educational content, not investment advice. No signals, entries, stops or position sizes.