

The renowned technical analyst Thomas R. DeMark invented a series of indicator systems, among which the most widely used is the DeMark Sequential, also known as the TD Sequence. The TD Sequence is a technical analysis tool used to estimate the timing of trend exhaustion. It can identify potential turning points during market trends or consolidations, providing traders with buy and sell signals.
The core value of the TD indicator lies in helping traders recognize extreme market sentiment. After a sustained upward or downward move, the TD Sequence can, through specific counting rules, signal possible trend reversals. This method does not rely on complex mathematical models but is based on the inherent regularity of price behavior, making it particularly practical in highly volatile markets such as cryptocurrencies.
Before learning about the TD Sequence, one must understand what a TD structure is. The TD structure forms the foundation of the TD indicator system and is categorized as either a buy setup or a sell setup. Mastery of the formation conditions and features of these structures is essential for applying TD indicators to trading decisions.
How does the TD buy structure form? It begins to develop when the market experiences continuous downward pressure. Specifically, when nine consecutive candlesticks appear, and each of their closing prices is lower than the close of the fourth candlestick before it, a complete TD buy structure is formed.
This formation indicates the market has undergone a sustained decline, and bearish momentum may have reached its peak. The highest price of the first candlestick in the TD buy structure is defined as the TD buy trend pressure line, or TD trend pressure line. This line often serves as an important reference; a breakout above it may signal the end of the downtrend.
The formation logic of the TD sell structure is the opposite of the buy structure. When nine consecutive candlesticks appear, and each of their closing prices is higher than the close of the fourth candlestick before them, a TD sell structure is established. This reflects ongoing bullish momentum, suggesting that the buying force may have been overly extended.
The lowest price of the first candlestick in the TD sell structure is defined as the TD sell trend support line, or TD trend support line. This support line often provides effective support during price retracements. A breakdown below it could indicate the end of the uptrend.
In practical application, traders should closely monitor the formation process of these structures. Once a complete TD buy or sell structure is identified, traders should prepare corresponding strategies and combine other technical indicators to improve the probability of successful trades.
After understanding buy and sell structures, let's delve into the counting method of the TD Sequence. For the TD buy structure, accurately determining the starting point of counting is crucial.
How is the first candlestick of the TD buy structure determined? It requires meeting strict conditions: observing at least six candlesticks, where the fifth candlestick's close must be higher than the first's, and the sixth candlestick's close must be lower than the second's. Only when these three conditions are simultaneously met can the first candlestick be confirmed, and the official count begins.
This setup ensures that, at the start of counting, the market has already exhibited clear price fluctuations, preventing false signals during sideways consolidation.
The TD buy sequence has an important characteristic: the count can be non-continuous. If certain candlesticks do not meet the counting criteria (i.e., their closing prices are not lower than the close of the fourth candlestick before them), the count temporarily pauses but does not reset to zero. When subsequent candlesticks again satisfy the criteria, the count resumes from where it left off.
Starting from the ninth candlestick in the TD buy structure, if the counting conditions are still met, the count continues to increase, with a maximum value of 13. Once reaching 13, the sequence stops regardless of whether subsequent candlesticks meet the criteria. A sequence of 13 is considered a strong signal of trend exhaustion, indicating a high probability of reversal.
The counting method for the TD sell structure is symmetrical to that of the buy structure. When nine consecutive candlesticks appear, and each of their closing prices is higher than the close of the fourth candlestick before them, a TD sell structure is formed. The determination of the starting point and interruption mechanisms follow the same principles as the buy structure, just in the opposite direction.
In actual trading, traders should patiently wait for the complete formation of the TD structure. Entering too early risks trend continuation; however, a complete TD sequence (especially reaching 13) often provides a more reliable reversal signal.
First, let's look at how to apply TD buy signals. When a complete TD buy structure forms, it suggests a potential reversal. Traders may consider buying. But formation alone is insufficient; additional confirmation conditions should be observed.
Specifically, if the lowest prices of the eighth or ninth candlestick are lower than those of the sixth and seventh candlesticks, this is called a "price flip," which serves as a stronger buy signal. In such cases, traders can buy after the TD buy structure forms, with a stop-loss set below the lowest price within the structure to manage risk.
The logic behind this setup is that a price flip indicates the bears have reached their peak, and the market has experienced the last panic sell-off. The probability of reversal then increases. Placing the stop-loss below the structure’s lowest point allows some price fluctuation, preventing being stopped out by normal retracements.
Next, consider how to apply TD sell signals. When a complete TD sell structure forms, it suggests a potential reversal to the downside. Traders may consider selling or shorting.
Confirmation conditions are similar: if the highest prices of the eighth or ninth candlestick are higher than those of the sixth and seventh candlesticks, this is also a price flip, indicating a stronger sell signal. After the TD sell structure forms, traders can initiate a sell or short position, with a stop-loss set above the highest price within the structure.
This signal indicates the bullish momentum has been overly extended, and the market has experienced its final wave of chasing gains, increasing the likelihood of a pullback or reversal. The stop-loss placement follows the same principle as for buy signals, providing appropriate price space.
Finally, a few special reminders regarding the use of the TD indicator:
First, operating based on TD buy and sell structures carries certain probabilistic risks. No technical indicator guarantees a 100% success rate, and the TD indicator is no exception. Traders should treat it as an auxiliary decision-making tool, supplementing it with other technical analysis methods and fundamental analysis to comprehensively assess the market trend.
Second, generally speaking, trading based on a sequence of 13 has a higher success rate. While a sequence of 9 is also an effective signal, the 13 sequence reflects a more extreme market condition, often resulting in stronger reversals. Conservative traders may choose to wait until a 13 sequence appears before acting.
Lastly, after the buy or sell sequence reaches 9 or 13, there may still be candlesticks satisfying the counting rules. This phenomenon, called "sequence continuation," indicates that the trend inertia remains strong. Traders should stay alert and consider reducing position size or waiting for clearer reversal signals.
In the cryptocurrency market, due to high volatility, applying the TD indicator requires extra caution. It is recommended that traders combine its use with volume, RSI, MACD, and other indicators, and strictly implement stop-loss strategies to effectively control trading risks.
The TD indicator is a technical analysis tool that identifies market trend reversals by recognizing price patterns and changes in trading volume. In cryptocurrency spot trading, it helps traders discover potential buy and sell signals, improve timing, and assist in developing trading strategies.
The TD indicator generates trading signals by identifying price reversal points. When a bullish setup appears (nine consecutive higher closes), it can serve as a buy signal; when a bearish setup occurs (nine consecutive lower closes), it can indicate a sell. Combining these signals with volume confirmation enhances trading accuracy.
The TD indicator's advantage lies in accurately identifying market tops, bottoms, and trend reversal points, making it more sensitive for short-term trading. Its disadvantages include complex parameters and the need for stronger expertise. Compared to MACD and RSI, the TD indicator incorporates price and volume data but relies on market liquidity, making it less suitable for low-volume cryptocurrencies.











