Glossary term
Relative Vigor Index (RVI)
The Relative Vigor Index is a technical momentum oscillator that compares closing strength with the trading range to gauge trend conviction.
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What Is the Relative Vigor Index?
The Relative Vigor Index, or RVI, is a technical momentum oscillator that compares where prices close relative to where they open, adjusted by the trading range. It is based on the idea that prices tend to close above their opens in healthy uptrends and below their opens in healthy downtrends.
Traders use RVI to evaluate trend conviction, possible signal-line crossovers, and divergence between momentum and price. It is a trading indicator, not a valuation measure.
Key Takeaways
- RVI compares closing strength with the high-low range of recent price bars.
- The indicator is often smoothed and plotted with a signal line.
- RVI rising above its signal line can suggest improving upside momentum.
- RVI falling below its signal line can suggest weakening or downside momentum.
- RVI should be used with trend, volume, support, resistance, and risk controls rather than as a standalone trigger.
RVI Formula
A simplified one-period concept is:
Most charting platforms use a smoothed version. A common calculation weights the current and prior bars, then divides a smoothed close-open numerator by a smoothed high-low denominator. The signal line is often a weighted moving average of RVI values.
The intuition is straightforward. A close near the high after opening lower shows stronger buying pressure. A close near the low after opening higher shows weaker demand or stronger selling pressure. Smoothing tries to reduce noise from one bar.
How Traders Read RVI
RVI is usually read around its signal line rather than as an absolute overbought or oversold level. When RVI crosses above the signal line during an uptrend, some traders read it as confirmation that upside momentum is improving. When RVI crosses below the signal line during a downtrend, some traders read it as confirmation that downside momentum is strengthening.
Divergence is another common use. If price makes a new high while RVI fails to confirm, momentum may be weakening. If price makes a new low while RVI improves, selling pressure may be fading. Divergence is a warning, not a trade by itself.
What RVI Measures
Input | Interpretation |
|---|---|
Close minus open | Direction and strength inside the price bar. |
High minus low | The bar's trading range. |
Smoothing | Reduces one-period noise. |
Signal line | Creates a comparison line for crossovers. |
Where It Helps
RVI can be useful in markets with clear swings because it tries to measure whether closing behavior supports the visible trend. It can help traders avoid buying every price rise blindly by asking whether the asset is closing with conviction.
The indicator can also help with timing inside a broader plan. A trader who already believes a stock is in an uptrend might use an RVI crossover after a pullback as one piece of entry evidence. A trader watching a possible trend failure might use negative divergence as a reason to tighten stops or reduce exposure.
Time frame selection changes the meaning of the signal. Short settings react quickly but can produce more false crossovers. Longer settings are slower but may better reflect the trend a swing trader or position trader actually cares about.
Practical Limits
RVI can whipsaw in choppy markets. A sideways stock can produce repeated crossovers that look meaningful but do not lead to sustained moves. The indicator also depends on the time frame and smoothing settings. A signal on a five-minute chart may have little relevance to a weekly investor.
Like other oscillators, RVI can stay constructive during a trend longer than a contrarian expects. Shorting simply because an oscillator looks stretched can be costly in strong markets. The safer use is confirmation, risk management, and context.
The Bottom Line
The Relative Vigor Index measures whether closing behavior supports the current price trend. It can help traders read momentum and divergence, but it works best as one input in a broader trading process with clear risk controls.