Footprint Chart Guide
Advanced Cluster Analysis

Different footprint chart modes in ATAS: Bid/Ask, Delta, Volume profile, and TPO cluster views.

Footprint charts come in several modes, each revealing different aspects of order flow. Understanding which mode to use and when separates elite traders from beginners.

Main Footprint Modes

• Bid x Ask: Shows aggressive buys vs. sells at each price level. Best for identifying absorption and trapped traders.
• Delta: Net difference between buying and selling aggression. Quick visual of directional momentum.
• Volume: Total contracts traded at each price level. Identifies high-activity nodes.
• Trades Count: Number of transactions. Reveals institutional order splitting (many small orders = algo activity).
• Imbalance: Highlights asymmetric bid/ask ratios — the core of stacked imbalance detection.

Platforms supporting advanced footprint: ATAS, Quantower, Sierra Chart, Bookmap.

Bid/Ask cluster chart on ES futures showing aggressive buying absorption at key support level.

The Bid x Ask mode is the foundation of footprint analysis. Each price level displays two numbers: left (sells/bid) and right (buys/ask).

Key Patterns

• Absorption: Large buy volume but price doesn't rise — sellers absorbing buyers (bearish signal at resistance).
• Exhaustion: Buy volume decreasing across successive bars at highs — momentum fading.
• Delta Flip: Within a single bar, delta switches from positive to negative — micro-reversal signal.

Reading Bid/Ask Clusters

• Look for levels where bid >> ask (aggressive selling) without price dropping — buyer absorption.
• Look for ask >> bid (aggressive buying) without price rising — seller absorption.

High-Probability Setup

Strong bid/ask imbalance (3:1 ratio or higher) at a key level with price holding = trapped trader signal.

Pro Tip

Filter for minimum contract size (e.g., 50+ contracts per level) to eliminate noise in your cluster analysis.

Delta is the difference between buying and selling aggression (ask volume - bid volume). Two types matter:

Bar Delta

• Positive: More aggressive buying in the bar.
• Negative: More aggressive selling in the bar.

Cumulative Volume Delta (CVD)

Sums bar deltas over time, creating a running total of net buying vs. selling pressure.

Critical Divergences

• Bullish Delta Divergence: Price makes lower low, CVD makes higher low — buyers stepping in on weakness.
• Bearish Delta Divergence: Price makes higher high, CVD makes lower high — sellers absorbing buyers at highs.

Advanced Delta Analysis

• Delta Exhaustion: 3+ consecutive bars of strong positive delta without price advancing = buyer exhaustion.
• Delta Flush: Rapid negative delta spike (panic selling) at support = potential reversal setup.

Pro Tip: Always combine CVD divergence with price structure (support/resistance) for highest-probability entries.

Unfinished auction (open edge) on a footprint chart, indicating unfilled orders and potential price return.

Unfinished Auctions

An unfinished auction occurs when a bar closes at its extreme (high or low) with remaining bid or ask volume — indicating the market "left business undone."

Interpretation

• Bar closes at high with open asks: Price likely to return to fill remaining sell orders (bearish for next bar).
• Bar closes at low with open bids: Price likely to return to fill remaining buy orders (bullish for next bar).

Volume Gaps

• Levels with zero or near-zero volume in the footprint = potential price magnets (price accelerates through these zones).
• Volume gaps above = targets for upside moves; below = targets for downside.

Advanced Application

Combine unfinished auctions with stacked imbalances for a multi-confirmation setup:

• Unfinished bid auction at prior support + stacked bid imbalances = high-conviction long entry.

The most powerful footprint setups combine multiple filters simultaneously:

Elite Long Setup

• Stacked bid imbalances (3+ levels) at key support.
• Positive CVD divergence (price lower, CVD higher).
• Absorption candle (high buy volume, price stays flat or slightly rises).
• Unfinished bid auction at bar low.
• VWAP reclaim on close.

Elite Short Setup

• Stacked ask imbalances at key resistance.
• Negative CVD divergence (price higher, CVD lower).
• Absorption at highs (high sell volume, price flat or slightly drops).
• Unfinished ask auction at bar high.
• VWAP rejection on close.

Risk Management for Elite Setups

• Stop: 1 tick beyond the footprint absorption range.
• Target: Next significant volume node or VWAP.
• Risk: 0.5% of account maximum per trade.

Advanced footprint analysis transforms raw order flow data into precise, institutional-grade trading signals — but requires significant screen time to master.

Key Resources

• ATAS Footprint Documentation: https://atas.net/blog/how-footprint-charts-work-footprint-modes-and-what-they-are-for/
• Quantower Footprint Guide: https://help.quantower.com/analytics-panels/chart/volume-analysis-tools/footprint-chart
• YouTube Advanced Footprint Tutorial: https://www.youtube.com/results?search_query=advanced+footprint+chart+trading