Market Profile

What Market Profile is

A normal candlestick chart plots price against time: each bar tells you what happened in a minute, five minutes or a day. Market Profile flips the question. It asks at which prices the market did its business. Instead of stretching along a time axis, the activity piles up beside the price scale into a distribution, usually a rounded or lopsided bell shape.

The method was developed by J. Peter Steidlmayer at the Chicago Board of Trade and later popularized by trading educators such as James Dalton. The core idea is the auction: markets move to find prices where buyers and sellers will transact, and they spend more time at prices both sides accept as fair. Prices that are visited briefly and abandoned tell a different story from prices where trading lingered.

You do not need to trade with Market Profile to benefit from its vocabulary. Terms such as point of control, value area, acceptance and rejection appear in many market commentaries, including the LiquidityLevels briefings, because they describe real features of how a session unfolded.

How a profile is built

The classic version builds the profile from time. The session is divided into 30-minute periods, and each period is assigned a letter. Every price the market trades through during that period gets that letter printed beside it. As letters stack up at the same prices, a shape forms. Prices with many letters are where the market spent more time.

A volume profile uses the same layout but weights each price by the number of contracts or shares that traded there. The two views often agree and sometimes differ: a price can see heavy volume in a short burst without much time spent there. Neither is better in general; they answer slightly different questions, and many platforms let you choose.

Three reference points come out of almost every profile. The point of control (POC) is the price with the most activity. The value area is the range around the POC that contains a set share of activity, most often about 70 percent. Its upper and lower edges are called the value area high (VAH) and value area low (VAL).

Reading the shape

Profile shapes are descriptions, not predictions. A balanced, bell-like profile suggests the market rotated around one area of agreed value. A profile that is skewed to one end, sometimes described as a P or b shape, suggests activity concentrated after a sharp move up or down. A thin, elongated profile with little accumulation suggests a one-directional day where the market did not stay long anywhere.

Traders also look for features at the edges: long thin tails where the market probed a price and left quickly, or flat tops and bottoms where it kept returning. These are clues about acceptance and rejection, which the Academy covers separately.

Why traders look at it

Profiles give a map of recent value. If the market today trades inside yesterday value area, that says something different from a market that opens well outside it. Comparing today with the prior session profile is one of the simplest and most common uses.

It also gives levels that are derived from behavior rather than from a single print. A POC or value area edge is the product of a whole session of trading, not one high or low, which is why many traders treat them as more meaningful references than raw extremes. That is a matter of preference, and none of these levels is guaranteed to matter on a given day.

Worked example

Common mistakes

• Treating a profile level as a guaranteed support or resistance. It is a record of past activity, not a promise.
• Mixing time-based and volume-based profiles without noticing which one a source is using.
• Using a profile built from too little data, such as a single thin overnight session, and reading it like a full-day profile.
• Ignoring session definitions. A profile built on regular trading hours looks different from one built on the full 24-hour futures session.

How it connects to ES, NQ, SPY and QQQ

ES and NQ trade nearly around the clock, so futures traders can build profiles for the overnight session, the regular cash session, or the full day. LiquidityLevels briefings describe where overnight activity sat relative to the prior cash session value, then translate key levels into approximate SPY and QQQ terms.

Because SPY and QQQ only trade actively during regular hours, the overnight map comes from futures. Comparing it with the prior day profile is a quick way to describe whether the open is likely to start inside, above or below accepted value.

Frequently asked questions