Key Takeaways
- Momentum oscillator combining four smoothed ROCs.
- Signals trends, reversals, and entry/exit points.
- Crossovers and divergences generate buy/sell alerts.
- Positive values show bullish momentum, negative bearish.
What is Know Sure Thing (KST)?
The Know Sure Thing (KST) is a momentum oscillator developed by Martin Pring that measures price momentum by combining smoothed rates of change across multiple timeframes. It helps traders and investors identify trends, potential reversals, and optimal entry or exit points within various markets, including stocks and ETFs like SPY.
This oscillator fluctuates above and below a zero line, generating signals through crossovers, divergences, and centerline breaks, making it a useful tool in technical analysis.
Key Characteristics
The KST oscillator provides a composite view of momentum with several important features:
- Multi-timeframe momentum: Combines four smoothed rates of change (ROC) weighted by different periods to capture short- and long-term trends.
- Unbounded oscillator: Moves freely above and below zero, similar to MACD, facilitating clear bullish or bearish momentum signals.
- Signal generation: Uses line crossovers, centerline crosses, and divergences to indicate buy or sell opportunities.
- Smoothing technique: Applies data smoothing via simple moving averages to reduce noise and lag.
- Versatility: Effective across asset classes, including stocks featured in guides like best large-cap stocks and ETFs.
How It Works
KST calculates momentum by summing four weighted ROC components, each smoothed with simple moving averages. This combination produces a single line reflecting momentum cycles from short to longer periods.
You monitor the KST line relative to its 9-period SMA (signal line) and the zero centerline to interpret momentum shifts. Crossovers of these lines indicate changes in trend strength, while divergences between price and KST warn of potential reversals.
Examples and Use Cases
The KST is widely applied by traders aiming to time market moves or confirm trends in various sectors and investment types:
- Large-cap stocks: Investors tracking SPY use KST to gauge momentum across market cycles and adjust their positions accordingly.
- Growth stocks: Momentum signals from KST can help identify buying opportunities in fast-growing stocks before price accelerations.
- Technical setups: Combining KST signals with candlestick patterns, such as those explained in the candlestick guide, enhances trade timing and confirmation.
Important Considerations
While KST offers valuable momentum insights, it is best used alongside other indicators to avoid false signals in volatile or sideways markets. Incorporating volume analysis and complementary oscillators can improve reliability.
Be mindful of lag introduced by smoothing, which may delay signals. Regularly review your strategy by backtesting KST with historical data and align it with your risk tolerance and market context.
Final Words
The Know Sure Thing (KST) indicator offers a comprehensive view of momentum across multiple timeframes, making it valuable for spotting trend shifts and timing trades. To put it into practice, test KST signals alongside volume or price action on historical data before integrating it into your strategy.
Frequently Asked Questions
Know Sure Thing (KST) is a momentum oscillator developed by Martin Pring that measures price momentum across four different timeframes by summing smoothed rates of change. It helps traders identify trends, reversals, and entry or exit points in the market.
KST combines four rate of change (ROC) components, each smoothed with a simple moving average and weighted differently. These weighted ROCs are summed to form the KST line, which is then smoothed by a 9-period SMA to create a signal line for trading signals.
Positive KST values indicate bullish momentum, suggesting an upward trend, while negative values signal bearish momentum, indicating a downward trend. The oscillator fluctuates above and below a zero centerline, which acts as a key reference point.
KST generates signals through crossovers of the KST line and its signal line, centerline crosses, and divergences. For example, a KST line crossing above its signal line suggests a buy, while crossing below indicates a sell.
Divergences occur when the price makes new highs or lows but the KST does not follow, signaling a potential trend reversal. For instance, a bearish divergence happens if price hits new highs but KST forms lower highs, warning traders of weakening momentum.
Yes, KST is versatile and can be applied to stocks, commodities, and other financial instruments to analyze momentum across multiple timeframes, making it useful for various trading strategies.
When KST crosses above zero, it indicates a positive trend shift and potential buying opportunity. Conversely, crossing below zero signals a negative trend and can suggest it's time to sell or exit a position.
Yes, traders often confirm KST signals with volume, candlestick patterns, or other technical indicators to improve reliability and reduce false signals.


