Market Profile - TPO, Initial Balance and Auction Structure

If Volume Profile answers the question “how much” at a given price, Market Profile (TPO) answers the question “when and for how long” the market stayed at a given price. These are two complementary ways of reading the same auction. Volume Profile shows where the work was, TPO shows where the time was.

Created by Peter Steidlmayer at the CBOT in the 1980s, Market Profile organizes the session into 30-minute time blocks marked with letters. Where the letters are widest, that is where the market spent the most time - it built value.

TPO - Time Price Opportunity

Each letter = 30 minutes of trading.

• A = 9:30-10:00 (for the US session), B = 10:00-10:30, and so on.
• If during period A price visited 4100-4110, you write A at every price in that range.
• At the end of the day you have a profile that looks like a bell. The widest point is the point where the market spent the most TPO periods.

Key differences vs Volume Profile:

In a strong trend they can diverge: the TPO POC can be higher than the Volume POC, because the market quickly pushed volume lower, but then stood higher for a long time, waiting.

POC TPO = price with the greatest number of TPOs (letters)

Value Area TPO = 70% of all TPOs around the POC TPO

Single Prints: a single TPO at a level (e.g. only the letter B) - the trace of a fast directional move, an LVN in the language of TPO

Day structure: Initial Balance, Range, Tails

Market Profile divides the day into key phases:

1. Initial Balance (IB): The price range of the first 60 minutes of trading (periods A and B). This is the opening balance. Its size and position determine the type of day.

IB High = max(high of periods A,B)
IB Low = min(low of periods A,B)
IB Range = IB High - IB Low

2. Tails (Buying/Selling Tail): Extreme TPOs at the top or bottom of the day, where only a single letter remained. This is the trace of rejection. Buyers or sellers defended the level aggressively at the end and did not come back.

3. Range Extension: Price moving outside the Initial Balance. It measures whether the market found new business outside the morning equilibrium.

4. Tails and Excess: A long tail at the bottom with Single Prints is the effect in which sellers exhausted themselves low, and buyers quickly returned. It is like the wick of a candle, but recorded in time.

Day types according to Market Profile (Steidlmayer’s classification):

Initial Balance - why the first 60 minutes set your plan

The IB is a contract between overnight players and the morning session. Its breach with volume is information.

IB rules you can measure:

1. IB Range vs ATR: IB% = IB Range / ATR(20). If IB% > 50% you already have a day of high volatility - do not expect a large extension.
2. IB Breakout: A 30M candle closing outside the IB + volume > AVG in the IB -> a 68% chance of continuation in the direction of the breakout until the end of the session (statistic for ES).
3. IB as a target: If the day starts as a Trend Day and moves strongly outside the IB, then a return to the IB is often the end-of-day target for closing the TPO gap (the so-called IB Retest).

In practice:

If Open in IB and IB Range < 0.5 * ATR(20):
   -> The day has trend potential, plan: wait for the IB breakout

If Open outside IB and IB Range > ATR(20):
   -> The day is already decided, risk of chasing, plan: wait for a test of the POC or the IB extremes

Single Prints and Poor High/Low - ready-made risk levels

Market Profile gives you ready-made definitions of weak and strong highs:

• Poor High/Low: The high/low of the day where 2-3 TPOs remained side by side at the highest/lowest level (e.g. D E F at the same level). This means the market did not find aggressive rejection, it merely stalled because it ran out of buyers. Such a level will be tested in the future and often broken.

• Spiked / Excess High/Low with Single Prints: Only one TPO remained at the very top (e.g. only B at the top, with the rest of the day lower). This is a strong rejection. Aggressive defence. Such a level has a much greater chance of holding for weeks.

For your stop loss this is a key difference: a stop behind a Poor High is asking to get clipped. A stop behind an Excess with Single Prints is a stop behind real defence.

When the plan says do not trade

1. When the IB is > 80% of the daily ATR in the first 60 minutes. The market has already delivered its norm. Everything after that is noise with low expected value. Statistically, after such an IB there is no trend left.
2. When yesterday’s and today’s profiles are both Neutral Days with Value Areas overlapping by 90%. The market is in dead equilibrium. TPO gives no edge. You need an external catalyst (data, a weekly range breakout).
3. When you open the platform in the middle of the day, and the day is a Trend Day with extension in one direction and you no longer have the IB. Chasing the middle of a trend without an IB/POC reference point is the most common cause of losses on Market Profile. The plan says: wait until tomorrow or only play the IB retest.
4. When the TPO profile is built on data with no session split (e.g. 24h crypto with no main session carved out). TPO loses its meaning, because every hour is equally important. You must define a main session (e.g. 14:30-21:00 for crypto vs USD), otherwise you get flat noise.

Mistakes that cost the most

1. Using Market Profile on a market with no official session hours without normalization. If you overlay TPO letters A-Z on 24h crypto, the night letters will carry the same weight as those from the NYSE open. This falsifies the picture. Define the RTH session (Regular Trading Hours).

2. Trading every IB breakout as a trend. An IB Breakout without checking volume and Single Prints is a trap. A real trend day additionally has: volume rising in the direction of the breakout and no return to the middle of the IB for at least 2 TPO periods.

3. Ignoring Value overlap. If today’s Value overlaps yesterday’s by 80%, there is no new business. Playing for a breakout is doomed to fail. This is a day for rotation, not for trend.

4. Drawing TPO on a 1-minute chart. TPO is a 30-minute concept. Dropping lower creates false Single Prints because of a lack of liquidity, not real rejection. Stay with 30M TPO, and get your entry precision from the Footprint.

Measurable exercise

Over 10 sessions on ES or DAX:

1. Mark every day: IB High, IB Low, POC TPO, VAH TPO, VAL TPO, whether there are Single Prints at the top/bottom.
2. Classify the day as one of the 5 types.
3. Write down: what happened after the IB breakout (continuation or return)? How many TPOs passed before it returned?
4. Measure: what % of Trend Day days close outside the IB in the direction of the breakout vs what % of Normal Days return to the POC.

Goal: build your own statistic of IB breakout effectiveness on your market.

Spreadsheet:
Date | IB Range | IB Range / ATR | Day type TPO | IB breakout (Y/N) | Continuation % | Return to POC? | Conclusion

After 10 days you will know whether your market respects the IB or not.

Check yourself

1. How does the TPO POC differ from the Volume POC and when does that difference give you an edge?
2. Define the Initial Balance and give 2 rules for using it as a trend filter.
3. What is a Poor High and why should you not place your stop right behind it?
4. What are the 3 characteristics of a Trend Day vs a Normal Day?
5. What does a day with two distributions (Double Distribution) mean?

Frequently asked questions

Does Market Profile work on WIG20/GPW, where the session lasts 8 hours? Yes, but you have to recalculate TPO into 16 30M periods, not 13 as in the US. The IB is still the first 60 minutes. The rules of Single Prints and Poor High work identically, because it is auction psychology, not the exchange.

TPO or Volume Profile - which matters more? Neither matters more. They are two projections. Volume shows where the capital was, TPO shows where the time was. When both POCs coincide at one price, you have Confluence - the level with the highest weight. When they diverge, look at Volume as the leading one for large players.

Do I have to draw TPO manually? No. Platforms such as Sierra Chart, ATAS, NinjaTrader draw it automatically. You do, however, have to understand the logic so you do not treat the letters as an indicator. A letter is 30 minutes of time spent at a level.

What if Market Profile shows Single Prints and Volume Profile shows an HVN at the same place? That is an apparent contradiction. Rare, but it means a huge volume passed in a short time (e.g. an order block). TPO sees a short time, Volume sees large capital. In such a place Volume prevails - it was one large player, not a long process of acceptance. Treat it as a level, but with slippage risk.

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