Follow the smart money. This indicator brings institutional-grade Smart Money Concepts to NinjaTrader 8 — detecting Break of Structure, Change of Character, supply/demand zones, order blocks, fair value gaps, volume profiles, Fibonacci retracements, equal highs/lows, and trendline liquidity. With full multi-timeframe support, a right-click easy access menu, and 16 exportable plots for strategies and AlgoStudio Pro.

Why Choose This Indicator

Detection Methods

TDU Market Structure offers two detection algorithms for identifying swing highs and lows. The detection method you choose is fundamental — it determines how the indicator finds the structural pivots that drive every downstream feature: BOS, ChoCh, supply/demand zones, order blocks, Fibonacci levels, and more. Choosing the right method for your trading style and instrument is the first step to getting the most out of this indicator.

Why Detection Method Matters

Every SMC feature in this indicator depends on accurate swing detection. If swings are too sensitive, you get noise — too many false BOS signals, cluttered supply/demand zones, and unreliable order blocks. If swings are too insensitive, you miss important structural changes. The two detection methods let you find the right balance for your instrument, timeframe, and trading style.

PriceAction Mode

Uses pullback-based detection with configurable thresholds. The indicator identifies a new swing when price pulls back by a minimum amount from a recent high or low. You control the minimum pullback size using three measurement options:

• ATR: Pullback must exceed BOSATRMultiplier × ATR(BOSATRPeriod). This adapts automatically to volatility — larger pullbacks are required on volatile instruments.
• Percentage: Pullback must exceed a fixed percentage of the previous swing range. Good for consistent relative measurements.
• Ticks: Pullback must exceed a fixed number of ticks. Best when you want absolute control over minimum swing size.

PriceAction mode gives you the most granular control. Use it when you want to fine-tune swing sensitivity for a specific instrument or when you need pullback-based detection that adapts to volatility via ATR.

Fractal Mode (Default)

Uses fractal-based swing detection. A fractal high is confirmed when there are N bars on each side with lower highs — the high stands out as a local peak. A fractal low is confirmed when there are N bars on each side with higher lows. The FractalSize parameter controls how many confirming bars are needed on each side (default: 4).

This method is simpler to configure and produces more consistent results across different instruments and timeframes. A higher FractalSize (e.g. 6–8) filters out minor swings and focuses on major structure. A lower value (e.g. 2–3) captures more swings for scalping or micro-structure analysis.

Break of Structure (BOS)

Macro vs. Micro BOS

The indicator detects both macro BOS (main structure) and micro BOS (smaller moves within the main trend). Macro BOS uses the main swing detection algorithm and captures the dominant trend. Micro BOS detects smaller structural breaks between major swings — useful for fine-tuning entries or scalping within a larger move. On multi-timeframe setups, macro BOS on a higher timeframe gives you the direction while micro BOS on a lower timeframe helps you time entries.

Why BOS Matters for Your Trading

BOS is not a trade entry signal — it is a directional filter. It tells you which side of the market to be on. Once a bullish BOS occurs, you know the smart money is pushing price up, and you should be looking for long opportunities. Once a bearish BOS occurs, you should only look for shorts. This single filter eliminates the majority of losing trades by keeping you aligned with the dominant order flow.

Structure Mapping

Controls how BOS lines are drawn on the chart. Candle_Close maps the BOS line to the closing price of the breakout candle — this is the stricter setting and produces fewer false breaks. Candle_Wick maps the line to the wick (high/low) and detects breaks earlier, including intra-bar wicks that don't close beyond the level. Most traders prefer Candle_Close for a more reliable signal.

Display Types

Choose how BOS labels appear on the chart: None (hidden), LineOnly (horizontal line only), Text (line + BOS label), or TextAndTimeFrame (line + label + timeframe, ideal for multi-timeframe setups where you need to know which timeframe generated the BOS).

Change of Character (ChoCh)

ChoCh vs. BOS: Understanding the Difference

BOS and ChoCh serve different purposes. A BOS confirms the trend — it tells you the big players are still pushing in the same direction. A ChoCh signals a potential change — the first break against the current internal structure. In a bullish trend (higher highs, higher lows), a ChoCh occurs when price breaks below an internal low for the first time. This doesn't necessarily mean the trend has reversed, but it means the internal momentum has shifted and a pullback or reversal may be starting.

Why ChoCh Matters for Your Trading

ChoCh is one of the most powerful tools for timing entries. By combining higher-timeframe BOS (for direction) with lower-timeframe ChoCh (for timing), you can enter trades at optimal points rather than chasing price after a breakout. ChoCh also helps you recognize when a pullback is ending and the trend is about to resume.

Swing Structure

Why Strong/Weak Matters

The strong/weak classification gives you a built-in target and stop-loss framework. In a bullish trend, the strong low acts as your support (place stops behind it) and the weak high acts as your target (price is drawn toward it). In a bearish trend, the strong high is resistance and the weak low is the target. This removes guesswork from where to place stops and targets.

HH/LL Labels

Show Higher High (HH), Higher Low (HL), Lower High (LH), and Lower Low (LL) labels at swing points. These labels make it easy to visually confirm the trend at a glance: a bullish trend shows a sequence of HH and HL, while a bearish trend shows LH and LL. When the sequence breaks (e.g., a LL appears in a bullish sequence), it signals a potential trend change. This is the most fundamental way to read price structure.

Fractals

Show fractal up/down markers at the exact bars where the indicator detected a swing pivot based on the FractalSize parameter. Fractals are visual confirmation of where the detection algorithm found significant swing points. They help you verify that the indicator is correctly identifying the structure you see on the chart.

Internal Structure

Internal structure shows the highs and lows within the current swing range. While the main swing structure tracks the macro trend (the big moves), internal structure tracks the smaller micro movements happening between the most recent swing high and swing low. Internal highs and lows are drawn as horizontal lines on the chart, giving you a layered view of price behavior.

What Internal Structure Tracks

Imagine price is in a bullish trend, moving from a swing low toward a swing high. Along the way, it doesn't move in a straight line — it makes small pullbacks and pushes. Internal structure captures these smaller highs and lows within the current move. This is the structure that ChoCh signals are based on: when price breaks an internal low in a bullish move, that's a ChoCh, signaling a possible pullback or reversal of the micro trend.

Why Internal Structure Matters

Internal structure bridges the gap between the macro view (BOS, major swings) and the micro view (individual candles). It helps you understand where price is within the current structural leg:

• Entry timing: After a BOS confirms direction, internal structure shows you exactly where the pullback is within the move. Wait for price to pull back to an internal low (bullish trend) or internal high (bearish trend) for better entry prices.
• Pullback depth: Internal highs and lows reveal how deep the current pullback has gone. If price breaks through multiple internal levels, the pullback is more severe and you may want to wait for a ChoCh to re-confirm direction before entering.
• Risk management: Place stops behind internal structure levels for tighter risk, or behind the main swing structure for wider stops with more room.

Supply & Demand Zones

Why Supply/Demand Zones Form

Institutional traders cannot fill large orders at a single price — they need a range of prices and enough volume to execute their positions. When a large buy order absorbs all available sell orders in a price range, it creates a demand zone. When a large sell order absorbs all available buy orders, it creates a supply zone. The structural break (BOS or ChoCh) that follows is evidence that the institutional order was large enough to move the market.

When price returns to these zones, any remaining unfilled institutional orders may still be waiting. This is why zones often produce strong reactions — the original order flow resumes.

BOS Supply/Demand Zones

These are the strongest zones. They are drawn from the lowest point (demand) or highest point (supply) between the start of the swing and the BOS break. Because a BOS confirms the trend, these zones mark where the trend-confirming institutional activity happened. BOS demand zones in a bullish trend and BOS supply zones in a bearish trend are the highest-probability entry zones.

ChoCh Supply/Demand Zones

Premium vs. Discount

Every swing range has a midpoint (50% level). Price above the midpoint is in premium territory — expensive relative to the range. Price below the midpoint is at a discount. In a bullish trend, look for entries at demand zones in the discount area (below 50%). In a bearish trend, look for entries at supply zones in the premium area. The PremiumDiscount break type uses this midpoint to determine when zones are broken.

Breaker Blocks

When a supply/demand zone is broken through, the polarity flips — the zone becomes a breaker block. A broken demand zone (where buyers previously stepped in) becomes a bearish breaker block (now acting as resistance). A broken supply zone becomes a bullish breaker block (now acting as support). This concept is based on the idea that the institutional orders that once defended the zone have been overwhelmed, and the area now represents a reference point for the winning side. Enable with ShowSupplyDemandZonesBreakerBlocks.

Zone Types

Candle draws zones using the full candle body — wider zones that capture more area. Wick draws zones using wicks only — tighter zones that focus on the extremes. Wick zones are more precise but may get broken more often. Candle zones give more breathing room.

Break Detection

Controls when a zone is considered broken:

• Wick: Zone breaks when any wick penetrates through it. Most sensitive — removes zones early.
• Close: Zone breaks only when a candle closes through it. More conservative — ignores intra-bar spikes.
• PremiumDiscount (default): Zone breaks at the 50% midpoint. This is the most nuanced option — a zone is only invalid when price has moved through the premium/discount midpoint, meaning the majority of the zone has been consumed.

Order Blocks

Why Order Blocks Work

When an institution builds a position in a consolidation range, not all of the intended order may be filled. When price returns to the order block, the remaining unfilled orders may still be waiting. Additionally, the institution has a vested interest in defending this price level — if price breaks through their entry, they're at a loss. This creates a natural support or resistance effect at order block levels.

Order blocks that coincide with supply/demand zones or fair value gaps create confluence — multiple reasons for price to react at the same level. These are the highest-probability entries in SMC trading.

Detection Parameters

The indicator identifies order blocks using a base-thrust pattern. Base bars are the small-range consolidation candles where accumulation occurred — you control the minimum and maximum count (MinBaseBars, MaxBaseBars) and the maximum range as a percentage of the average bar range (BaseBarMaxPercentage). The thrust bar is the aggressive breakout candle — you control its minimum range as a percentage of the average (ThrustBarMinPercentage). Enable PaintBaseBars to color the base bars on the chart for easy visual identification.

Order Block States

Order blocks transition through four states as price interacts with them:

• Active — untested, price has not returned to the zone. These are the freshest and often the strongest.
• Tested — price revisited the zone but respected it (did not break through). Tested blocks confirm that institutional interest is still present.
• Broken — price broke through the zone, invalidating the institutional defense. The position was overwhelmed.
• Breaker — a broken order block that flips polarity. A broken demand block becomes resistance, a broken supply block becomes support. Breaker blocks represent reference points where the winning side took control.

Fair Value Gaps

Why Fair Value Gaps Matter

FVGs are among the most reliable entry zones in SMC trading because they are rooted in market microstructure. The gap represents unfilled orders and an absence of traded volume at certain prices. When price returns to fill the gap:

• Sellers who missed the initial move get an opportunity to enter (bearish FVG)
• Buyers who missed the initial move get an opportunity to enter (bullish FVG)
• The institutional orders that created the original move may still have unfilled portions at these levels

The indicator shows bullish FVGs (gap below current price, formed during an upward move) and bearish FVGs (gap above current price, formed during a downward move). The MinGapTicks setting filters out insignificant gaps caused by normal price noise.

Breaker Blocks

When a fair value gap is broken through (price fills the gap and continues beyond it), the FVG can flip into a breaker block. A broken bullish FVG becomes a bearish breaker, and a broken bearish FVG becomes a bullish breaker. This polarity flip works the same way as supply/demand breaker blocks. Enable with ShowFairValueGapBreakerBlocks.

Fibonacci Retracements

The indicator automatically draws Fibonacci retracement levels across each BOS swing range, showing you key price levels where pullbacks are statistically likely to find support or resistance. Up to 6 customizable levels are available, each with its own color. Set a level to 0 to disable it.

Why Fibonacci Works in Trading

Fibonacci retracement levels have been used by traders for decades because they consistently identify areas where price stalls during pullbacks. While the mathematical reasons are debated, the practical reality is clear: so many traders (retail and institutional) watch these levels that they become self-fulfilling. Orders cluster at Fibonacci levels, creating real support and resistance.

In SMC trading, Fibonacci levels serve a specific purpose: they help you identify the premium/discount zones within a swing. Price above the 50% level is in premium territory (expensive), price below is at a discount (cheap). Smart money buys at a discount and sells at a premium.

Key Levels

• 50% (Equilibrium): The midpoint of the swing. This is the boundary between premium and discount. Many traders watch this level as a minimum retracement target.
• 61.8% (Golden Ratio): The most widely watched Fibonacci level. Pullbacks to this level often produce strong reactions. A pullback that holds here suggests the trend is healthy.
• 78.6%: A deep retracement that often marks the last line of defense. If price reaches this level and holds, it often produces explosive continuation moves. If it breaks, the structure may be invalidating.
• 88.6%: The deepest standard retracement. Reactions here are less common but can produce significant moves when they occur.

Display Modes

• Normal: Draws individual horizontal lines at each Fibonacci level, with optional percentage labels
• Cluster: Groups nearby levels into shaded visual clusters, making it easier to identify confluence zones where multiple Fib levels stack together

Volume Profile

Why Volume Profile Matters

Volume profile transforms each BOS swing from a simple price range into a detailed map of institutional participation. High-volume levels (near the POC) represent areas of acceptance — where the market spent the most time and agreed on fair value. Low-volume levels represent areas of rejection — where price moved through quickly. When price returns to these levels:

• High-volume levels (POC, value area) tend to attract price and act as support/resistance
• Low-volume levels offer little resistance — price can move through them quickly

Key Concepts

• POC (Point of Control): The single price level where the most volume traded during the BOS. This is the market's "fair value" for that swing. Price gravitates toward the POC when it re-enters the range.
• Value Area: The price range containing 68% (configurable) of all volume during the BOS. This represents the core acceptance zone. Price inside the value area is in equilibrium; price outside is in imbalance.
• VP Order Blocks: The indicator identifies the last red bar touching the value area low (bullish BOS) or last green candle touching the value area high (bearish BOS). These are areas where the last counter-trend activity occurred before the BOS — making them high-confluence entry zones when retested.

Display Modes

• Off: Volume profile disabled
• ProfileAndLevels: Full volume histogram displayed within each BOS range, plus POC and value area lines. Best for detailed analysis.
• LevelsOnly: Just the POC and value area high/low lines without the histogram. Cleaner view for traders who want the key levels without visual clutter.

Equal Highs & Lows

Equal highs and equal lows are a powerful liquidity concept in Smart Money trading. They occur when two or more swing points cluster at nearly the same price level (within a configurable tick tolerance). These levels are significant because they represent liquidity pools — large clusters of stop-loss orders placed by retail traders.

The Liquidity Theory Behind Equal Highs/Lows

When price forms two or more highs at the same level, retail traders see a "double top" and place sell stop-losses just above. When price forms two or more lows at the same level, they see a "double bottom" and place buy stop-losses just below. These stop orders create pools of resting liquidity that institutional traders can target.

Institutions need liquidity to fill large orders. Equal highs provide a known pool of sell-side liquidity (stop-loss buy orders from shorts). Equal lows provide a known pool of buy-side liquidity (stop-loss sell orders from longs). The institution pushes price through the equal level to trigger these stops, absorbs the liquidity to fill their position, and then reverses.

Why Equal Highs/Lows Matter

Recognizing equal highs and lows helps you understand where the smart money is likely to go next. In a bullish trend, equal highs above current price are targets — they will likely be swept. In a bearish trend, equal lows below are targets. This knowledge helps you set realistic targets and avoid placing your own stops at these obvious liquidity levels.

The indicator automatically detects equal highs and equal lows by comparing consecutive swing points. A horizontal dashed line connects the equal levels on the chart. The EqualLowMaxDifference setting controls how close (in ticks) two swing points need to be to qualify as "equal."

Trendline Liquidity

Trendline liquidity is a concept that combines classical technical analysis with Smart Money liquidity theory. The indicator automatically draws trendlines through swing points — connecting higher lows in a bullish trend and lower highs in a bearish trend. But unlike traditional TA where trendlines are support/resistance, SMC views these trendlines as liquidity zones.

Why Trendlines Attract Liquidity

Trendlines are one of the most widely followed technical analysis tools. Millions of retail traders draw the same trendlines and place their stop-loss orders just beyond them:

• In a bullish trend, traders go long at the rising trendline and place stops just below it — creating buy-side liquidity underneath
• In a bearish trend, traders go short at the falling trendline and place stops just above it — creating sell-side liquidity above

Institutions know exactly where these stops are clustered. When they need liquidity to fill a large position, they push price through the trendline to trigger the stops, absorb the resulting orders, and then move price in their intended direction.

Why Trendline Liquidity Matters

Understanding trendline liquidity helps you avoid one of the most common retail trading mistakes: using trendlines as simple support/resistance and getting stopped out on the trendline break. Instead, you can anticipate the sweep and position yourself to trade the reversal after the liquidity grab.

Trend Display & Paint Bars

The indicator can display the current trend direction as a text overlay on the chart. The position is configurable (TopLeft, TopRight, BottomLeft, BottomRight, or Off). When multi-timeframe is enabled, the timeframe label is shown alongside the trend.

Paint Bars colors the chart candles based on the detected trend direction. Bullish trend bars are colored green (LimeGreen), bearish trend bars are colored red.

Multi-Timeframe Support

Easy Access Toolbar Menu

Right-click the "SMC" button on the chart toolbar to access the easy access menu. This menu lets you toggle every major feature on/off without opening the indicator settings dialog. Changes take effect immediately.

The menu is organized into logical groups matching the indicator’s feature categories. You can also use the mousewheel to cycle through options.

Alerts

The indicator supports real-time alerts for Break of Structure and Change of Character events. Alerts trigger a sound file when a new BOS or ChoCh is detected.

Strategy & AlgoStudio Pro Support

Code Example

// Access TDU Market Structure plots from a NinjaScript strategy
var smc = TDUMarketStructure();
double swingHigh = smc.SwingHigh[0];
double swingLow  = smc.SwingLow[0];
int    bosSignal = (int)smc.BreakOfStructure[0]; // 1=bull, -1=bear, 0=none
double nearestOB = smc.OrderBlockPrice[0];

Complete Settings Reference

Below is a comprehensive reference of every configurable setting, organized by property group.

Video Training

Watch these videos to see TDU Market Structure in action. Learn how to configure the indicator, interpret signals, and build complete trading strategies using Smart Money Concepts.

Version History