TD Sequential (DeMark Sequence): Identifying Trend Exhaustion Points (9/13)

1. Concept: What is TD Sequential?

The TD Sequential, developed by market timer Tom DeMark, is a systematic approach to identifying potential market turning points. Unlike traditional momentum indicators (like RSI or Stochastic) that measure the strength of a trend, TD Sequential measures the duration of a trend to predict when it will become exhausted.

The indicator uses specific candle counts—primarily 9 and 13—to signal when a price move has run out of buyers or sellers, suggesting that a significant reversal or major consolidation is imminent. It is a critical tool for timing entries and exits, aiming to capture the exact bar where momentum shifts.

2. Core Logic: The 'Why' Behind 9 and 13

TD Sequential operates in two distinct phases: the Setup and the Countdown. The logic assumes that for a trend to reverse, the underlying momentum must first persist for a minimum required duration, represented by the candle counts.

Phase A: The Setup (The 9 Count)

• Goal: To confirm initial directional momentum.
• Requirement: A Sell Setup (bearish signal) requires 9 consecutive bars where the current bar's closing price is greater than the closing price four bars prior. A Buy Setup is the inverse.
• Signal: The completion of the 9-count is the first, often reliable, short-term reversal signal. If the trend is weak, the reversal happens here.

Phase B: The Countdown (The 13 Count)

• Goal: To measure extreme trend exhaustion.
• Requirement: The Countdown phase begins after a valid 9 Setup has been completed. It requires 13 bars where the current bar's close must satisfy a specific price relationship (e.g., for a Buy Countdown, the close must be lower than the low two bars prior).
• Signal: The completion of the 13-count is considered the maximum trend exhaustion signal. It suggests that even if the market briefly consolidates, the original trend is highly likely to fail shortly thereafter.

3. Strategy: Entry and Exit Signals

Signal 9: The Short-Term Reversal

• Action: When a valid 9 Setup is printed (a Sell Setup 9 or Buy Setup 9), traders often look for a quick counter-trend trade.
• Entry: Enter the counter-trend position immediately upon the close of the 9th bar.
• Stop Loss: Place the stop loss beyond the high (for a short trade) or the low (for a long trade) of the 8th bar, or the high/low of the entire 9-bar sequence.
• Target: Targets are often short-term, aiming for the move to the 6-bar or 7-bar low/high of the preceding Setup.

Signal 13: The Major Trend Exhaustion

• Action: A 13-count is a high-conviction signal for a major trend reversal. These trades are often held for longer durations.
• Entry: Enter upon the close of the 13th bar.
• Stop Loss: Place the stop loss beyond the high/low of the 13th bar, or the highest/lowest print during the entire 13-count sequence.
• Target: Targets are substantial, often aiming for major historical support or resistance levels, or confirmation via another indicator like moving average cross-over.

Validation (Aggressive vs. Conservative)

• Aggressive: Trading solely on the completion of 9 or 13.
• Conservative: Waiting for the subsequent bar (bar 10 or 14) to confirm the reversal by printing an opposing directional move (e.g., after a Sell Setup 9, waiting for the 10th bar to close lower than the 9th bar's close).

4. Risks: When Does TD Sequential Fail?

While powerful, TD Sequential is not infallible. Its primary weakness lies in its inability to cope with extreme, parabolic, or 'blow-off' trends:

1. Parabolic Moves and Trend Aggregation: In very strong, straight-line trends (often seen in highly volatile assets like crypto), the price may print a 9 or 13 and then immediately consolidate briefly before continuing the original trend. This is known as 'Sequential Aggregation' or 'recycling the count.' The price needs more time to genuinely exhaust the move, causing the signal to fail or be delayed.

2. Lack of Confirmation: TD Sequential must never be used in isolation. Signals are unreliable without confirmation from established price action principles, such as:

   • Divergence: Confirming the 9/13 signal with RSI or MACD divergence.
   • Key Levels: Ensuring the signal prints directly at historical support or resistance levels, or near major moving averages.

3. Low Timeframe Noise: TD Sequential is generally more reliable on higher timeframes (Daily and Weekly charts). On lower timeframes (e.g., 1-hour or 15-minute), the high volume of market noise can produce frequent, unreliable 9-counts.

4. The Perfected Requirement: A valid Setup requires specific perfected conditions (e.g., the high of the 8th bar must be greater than the close of the 8th bar in a Sell Setup). If the Setup is 'unperfected,' the conviction level of the resulting signal is significantly lower.