Open Type Analysis
Where price opens relative to the prior session's Value AreaDefinitionThe price range where 70% of volume traded. Defined by Value Area High (VAH) and Value Area Low (VAL). is one of the most important signals in Market ProfileDefinitionA chart format using TPO letters to show how long price traded at each level. Reveals the shape of the auction. trading. It sets the tone for the entire session.
- Open inside prior VA — the market is accepting yesterday's value. Expect rotation and balance until price breaks above the VAHDefinitionValue Area High — the upper boundary of the zone where 70% of volume traded. or below the VAL
- Open above prior VAHDefinitionValue Area High — the upper boundary of the zone where 70% of volume traded. — buyers are in control from the open. Watch for acceptance above the VAH (bullish continuation) or rejection back into the VA (failed breakout)
- Open below prior VALDefinitionValue Area Low — the lower boundary of the zone where 70% of volume traded. — sellers are in control from the open. Watch for acceptance below the VAL (bearish continuation) or rejection back into the VA (failed breakdown)
- Open at or near prior POCDefinitionPoint of Control — the price with the highest volume. Where the most trading happened. — the market is opening at fair value. No directional bias yet. Wait for the first initiative move
Key Insight
The open type tells you the starting condition. It does not tell you what will happen next — you need the footprint and structure for that. But it gives you the context to interpret everything else.
Here is a real MNQ chart from March 31 showing this in action. Price opens inside the prior session's Value AreaDefinitionThe price range where 70% of volume traded. Defined by Value Area High (VAH) and Value Area Low (VAL). (the POCDefinitionPoint of Control — the price with the highest volume. Where the most trading happened., VAH, and VAL are all clearly labeled). After balancing near the open, price breaks above the IB HighDefinitionHighest price of the Initial Balance. Acts as resistance. A break above = range extension. and extends to the upside — a textbook open-in-value into IB extension day. Notice how the volume profile confirms heavy participation at the breakout level.

Key Insight
Our OrderFlow Indicator plots the full TPODefinitionTime Price Opportunity — a letter printed at each price level per 30-minute period on a Market Profile chart. profile, POCDefinitionPoint of Control — the price with the highest volume. Where the most trading happened., Value AreaDefinitionThe price range where 70% of volume traded. Defined by Value Area High (VAH) and Value Area Low (VAL)., and IB levels automatically on your NinjaTrader chart — exactly as shown above.
Here is another open-in-value example with a very different outcome. On March 20, MNQ opens inside the prior session's Value AreaDefinitionThe price range where 70% of volume traded. Defined by Value Area High (VAH) and Value Area Low (VAL). and rallies into the prior day's VAH — but gets rejected hard at that level. Price reverses, breaks the IB LowDefinitionLowest price of the Initial Balance. Acts as support. A break below = range extension., and trends down all session. The prior day's VAH acted as a ceiling. When you open inside value and price tests an edge of the prior VA, the reaction at that level tells you everything about the session's direction.

The 80% Rule
The 80% RuleDefinitionIf price opens outside the Value Area but re-enters it, ~80% chance it travels to the other side. is one of the most well-known Market ProfileDefinitionA chart format using TPO letters to show how long price traded at each level. Reveals the shape of the auction. setups:
- If price opens outside the prior Value AreaDefinitionThe price range where 70% of volume traded. Defined by Value Area High (VAH) and Value Area Low (VAL). and then re-enters it (crosses back through the VAH or VAL), there is roughly an 80% probability that price will travel all the way to the other side of the Value Area
- Example — price opens above the prior VAHDefinitionValue Area High — the upper boundary of the zone where 70% of volume traded., sells off, and drops back inside the VA. The 80% RuleDefinitionIf price opens outside the Value Area but re-enters it, ~80% chance it travels to the other side. says price is likely to reach the VAL
- The logic is based on auction market theory — if the market rejected the extreme and returned to value, it has momentum to travel through the accepted range to test the other side
Key Insight
The 80% RuleDefinitionIf price opens outside the Value Area but re-enters it, ~80% chance it travels to the other side. is a probability, not a guarantee. Combine it with footprint confirmation — look for imbalancesDefinitionA price level where one side overwhelms the other by 3:1 or more. Shows where big players committed. and deltaDefinitionAsk volume minus bid volume. Positive = more buying. Negative = more selling. Shows who is more aggressive. supporting the move through the Value AreaDefinitionThe price range where 70% of volume traded. Defined by Value Area High (VAH) and Value Area Low (VAL). before committing.
Here is a real MNQ example of the 80% RuleDefinitionIf price opens outside the Value Area but re-enters it, ~80% chance it travels to the other side. in action. On March 18, price opens above the prior day's VAHDefinitionValue Area High — the upper boundary of the zone where 70% of volume traded. — outside value. The A and B periods fail to hold above the VAH, and price drops back through it into the value area. Once price re-enters, it travels all the way through the entire VA, past the VAL, and continues lower. The prior session's poor lowDefinitionProfile low with multiple TPOs but no single-print tail. Auction incomplete — price tends to revisit. at the bottom acted as an additional magnet pulling price through.

Key Insight
This is the same March 17-18 sequence we saw in the poor highs and poor lows section — the 80% RuleDefinitionIf price opens outside the Value Area but re-enters it, ~80% chance it travels to the other side. and the poor lowDefinitionProfile low with multiple TPOs but no single-print tail. Auction incomplete — price tends to revisit. retest worked together. When multiple profile signals align, the trade has the highest conviction.
IB Extension Trades
When price breaks the Initial BalanceDefinitionThe price range of the first hour (A + B periods). Narrow IB = trend day. Wide IB = range day., you have a potential trend trade:
- Wait for the IB HighDefinitionHighest price of the Initial Balance. Acts as resistance. A break above = range extension. or IB Low to break
- Confirm with one-time framing — each new period prints a higher high (for longs) or a lower low (for shorts)
- Use the 1x IB extension as your first target
- If the IB was narrow, expect a larger extension — narrow IBs produce the best trend days
- Confirm with deltaDefinitionAsk volume minus bid volume. Positive = more buying. Negative = more selling. Shows who is more aggressive. — rising cumulative deltaDefinitionRunning total of buying vs selling across the session. Shows who has been in control overall. on a long extension, falling on a short extension
Here is a real NQ 5-minute chart showing this concept in action. Notice how the IB LowDefinitionLowest price of the Initial Balance. Acts as support. A break below = range extension. (marked by the blue horizontal zone) acts as support after the initial balance is established. Price bounces cleanly off the IB Low level, and the volume profile on the left confirms heavy volume was traded at that zone — creating a strong floor. The volume profile POCDefinitionPoint of Control — the price with the highest volume. Where the most trading happened. sits right at the IB Low, reinforcing it as a key level.

Key Insight
Our Market Structure Indicator automatically plots IB HighDefinitionHighest price of the Initial Balance. Acts as resistance. A break above = range extension. and IB Low levels on your NinjaTrader chart, while the OrderFlow Indicator gives you the volume profile and footprint data to confirm entries at these levels. Together, they show you exactly where the key levels are and what is happening when price gets there.
Poor High and Poor Low Retests
Poor highsDefinitionProfile high with multiple TPOs but no single-print tail. Auction incomplete — price tends to revisit. and poor lows from prior sessions are unfinished auctions waiting to be completed:
- When price approaches a prior poor highDefinitionProfile high with multiple TPOs but no single-print tail. Auction incomplete — price tends to revisit., expect a test above it — the market needs to find sellers
- When price approaches a prior poor lowDefinitionProfile low with multiple TPOs but no single-print tail. Auction incomplete — price tends to revisit., expect a test below it — the market needs to find buyers
- These retests often produce clean entries — the prior poor extreme gets swept, the auction completes, and price reverses
- Use the footprint at the retest to confirm — absorptionDefinitionHeavy aggressive orders hit a level but price doesn't move — a large passive player is absorbing the flow. at the poor highDefinitionProfile high with multiple TPOs but no single-print tail. Auction incomplete — price tends to revisit. (sellers absorbing buyers) is your signal to short
Single Print Support and Resistance
Single printsDefinitionPrice levels with only one TPO letter — price moved through quickly. Often act as support or resistance on retest. from prior sessions act as support and resistance:
- Single printsDefinitionPrice levels with only one TPO letter — price moved through quickly. Often act as support or resistance on retest. are prices the market moved through quickly — there was initiative activity but no acceptance
- When price returns to a single printDefinitionPrice levels with only one TPO letter — price moved through quickly. Often act as support or resistance on retest. zone, watch for a reaction
- If the market fills the single printsDefinitionPrice levels with only one TPO letter — price moved through quickly. Often act as support or resistance on retest. (spends time there), the prior initiative move is being unwound
- If the market bounces off the single printDefinitionPrice levels with only one TPO letter — price moved through quickly. Often act as support or resistance on retest. zone, the prior initiative activity is being confirmed
Combining Market Profile With Footprint
Market ProfileDefinitionA chart format using TPO letters to show how long price traded at each level. Reveals the shape of the auction. tells you where to look. The footprint tells you what is happening when price gets there:
- Profile gives you the levels — prior POCDefinitionPoint of Control — the price with the highest volume. Where the most trading happened., VAHDefinitionValue Area High — the upper boundary of the zone where 70% of volume traded., VAL, single printsDefinitionPrice levels with only one TPO letter — price moved through quickly. Often act as support or resistance on retest., poor highs and lows
- Footprint gives you the confirmation — imbalancesDefinitionA price level where one side overwhelms the other by 3:1 or more. Shows where big players committed., absorptionDefinitionHeavy aggressive orders hit a level but price doesn't move — a large passive player is absorbing the flow., deltaDefinitionAsk volume minus bid volume. Positive = more buying. Negative = more selling. Shows who is more aggressive. at those levels
- Example: price pulls back to the prior session POCDefinitionPoint of Control — the price with the highest volume. Where the most trading happened.. The profile says this is fair value. The footprint shows stacked buying imbalancesDefinitionA price level where one side overwhelms the other by 3:1 or more. Shows where big players committed. and positive deltaDefinitionAsk volume minus bid volume. Positive = more buying. Negative = more selling. Shows who is more aggressive.. That is a high-conviction long entry
- Without the footprint, you are trading levels blindly. Without the profile, you do not know which levels matter
Key Insight
Market ProfileDefinitionA chart format using TPO letters to show how long price traded at each level. Reveals the shape of the auction. provides the map. The footprint provides the real-time intelligence. Use the profile to identify where you want to trade. Use the footprint to confirm whether you should actually take the trade.