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Fair Value Gap (FVG) Underlay

LeafAlgo Fair Value Gap (FVG) Underlay

 By analyzing the size and characteristics of candlestick patterns, the Fair Value Gap indicator helps traders spot potential opportunities where the price of a currency or financial asset deviates from its fair value. The FVG is represented as a percentage and displayed as columns in an underlay on the chart.

Calculation and Interpretation:

The calculation of the FVG involves evaluating the body-to-wick ratio of a candlestick. This ratio compares the size of the body (the difference between the open and close prices) to the length of the wicks (the high and low prices). A high body-to-wick ratio indicates a significant price move within the candlestick, potentially signaling a strong market sentiment. The FVG indicator compares the size of the current candlestick with the previous candlesticks over a specified lookback period, typically the last 20 to 40 candlesticks. If the current candlestick meets the criteria for a fair value gap, it is classified as either a Bearish FVG or Bullish FVG, depending on the direction of the price movement.

Interpreting the FVG is relatively straightforward. When a Bearish FVG is detected, it suggests that the price is currently lower than its fair value, indicating a potential upward price movement in the future. This could be an opportunity to consider long positions or buying opportunities. On the other hand, when a Bullish FVG is identified, it implies that the price is higher than its fair value, signaling a possible downward price correction. Traders may consider short-selling or taking profits on long positions in such scenarios.


The coloration of the Fair Value Gap (FVG) indicator plays a crucial role in enhancing its visual representation and aiding interpretation. When a Bearish FVG is identified, the indicator utilizes the color scheme of lime green. This color signifies the potential for an upward price movement as the current price is considered lower than its fair value. On the other hand, a Bullish FVG is represented by the vibrant color of fuchsia, indicating a potential downward price correction as the price exceeds its fair value. The coloration serves as a visual cue, making it easier for traders to quickly identify and differentiate between different types of fair value gaps on the chart. Additionally, the barcolor is aligned with the respective FVG color, providing a comprehensive view of price inefficiencies and aiding traders in their decision-making process.

Potential Applications/Strategies:

The FVG indicator can be applied in various trading strategies and situations. One possible application is in price reversion strategies. Traders can use the FVG to identify overbought or oversold conditions in the market. When a Bullish FVG occurs, it may indicate an opportunity to consider short-selling or taking profits on long positions. Similarly, a Bearish FVG can suggest a potential buying opportunity, expecting the price to revert back to its fair value.

Another application is in confirming existing trends. The FVG can act as a confirmation tool for trends identified by other indicators or analysis techniques. When a Bullish FVG aligns with an uptrend, it may strengthen the bullish bias and provide more confidence in the upward momentum. Conversely, a Bearish FVG in conjunction with a downtrend may reinforce the bearish sentiment and support the idea of further downside potential.


Adjusting the parameters of the FVG indicator can be beneficial based on the trader’s trading style and time frame. The body-to-wick ratio threshold and lookback period can be modified to capture different types of fair value gaps and adapt to different market conditions. Shorter lookback periods may help identify more recent FVGs, which could be suitable for short-term traders, while longer periods may capture larger price inefficiencies and cater to longer-term traders.


However, it’s important to note that the FVG indicator, like any technical analysis tool, has its limitations. It relies on historical price patterns and may not always accurately predict future price movements. The interpretation of FVGs requires careful analysis and should be used in conjunction with other indicators, technical analysis tools, and fundamental factors to make well-informed trading decisions. Traders should also exercise proper risk management and consider the overall market context when using the FVG indicator.

In conclusion, the Fair Value Gap (FVG) indicator provides traders with valuable insights into price inefficiencies and deviations from fair value. By identifying Bearish and Bullish FVGs, traders can potentially uncover trading opportunities and make more informed decisions. However, it is crucial to combine the FVG indicator with other analysis tools, conduct thorough analysis, and exercise proper risk management to achieve consistent trading success.

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