Money Flow Index Trading: Volume-Weighted RSI
MFI adds volume to RSI for more meaningful overbought/oversold signals. Learn volume-weighted momentum trading with real money flow behind the numbers.
- MFI = volume-weighted RSI. >80 = overbought with volume. <20 = oversold with volume. More reliable than RSI alone.
- MFI divergence more meaningful because includes volume. Money flow not confirming price = warning.
- Thrive displays MFI with overbought/oversold and divergence alerts.
Explore MFI Signals
Click through MFI signal types:
MFI under 20 = oversold with volume. Unlike RSI, MFI includes volume, more meaningful. Strong selling pressure exhausted. Bounce likely.
MFI Level
MFI below 20
MFI < 20 at support = strong buy signal. Volume confirms oversold (not just price). Wait for MFI to turn up. Better than RSI alone because includes volume.
What Is the Money Flow Index?
MFI is RSI with volume weighting. While RSI only considers price change, MFI incorporates volume to show actual money flowing in or out. This makes overbought/oversold readings more meaningful—they reflect real participation.
Think of it this way: RSI says "price is extended." MFI says "price is extended AND there's heavy volume behind it." Volume confirmation matters.
MFI Analysis
Thrive displays MFI with automatic overbought/oversold and divergence detection.
MFI Signals
Overbought (>80)
MFI above 80 = overbought with volume. Strong buying exhausted. Volume-confirmed extremes are more likely to reverse. Look for shorts at resistance.
Oversold (<20)
MFI below 20 = oversold with volume. Strong selling exhausted. Volume-confirmed oversold is more meaningful. Look for longs at support.
Divergence
Price vs MFI disagreement. MFI divergence is powerful because it shows money flow not confirming price. Smart money positioning.
| MFI Level | Meaning | Volume | Action |
|---|---|---|---|
| > 80 | Overbought | Heavy buying | Look for shorts |
| < 20 | Oversold | Heavy selling | Look for longs |
| > 50 | Inflow | Bullish | Favor longs |
| < 50 | Outflow | Bearish | Favor shorts |
MFI vs RSI
MFI is more reliable because it includes volume.
- RSI: Shows price momentum only. Can be overbought on thin volume.
- MFI: Shows price + volume momentum. Overbought means real money participated.
Use both together: RSI for price momentum, MFI for volume confirmation. Overbought on both = stronger signal.
Dual Momentum
Thrive shows RSI and MFI together for complete momentum analysis.
Common Mistakes
- MFI alone: Still combine with price action. Volume extremes aren't automatic reversals.
- Ignoring trends: In strong trends, MFI can stay extreme. Don't fade trends.
- Low timeframes: MFI noisy on 1-minute. Use 15M+ for reliable volume data.
- Bad volume data: MFI needs accurate volume. Use reliable exchange data.
Frequently Asked Questions
What is the Money Flow Index (MFI)?
Volume-weighted RSI oscillator. Incorporates volume with price change to show buying/selling pressure. Range 0-100. Often called "volume RSI."
How is MFI different from RSI?
RSI only uses price change. MFI uses price and volume. MFI readings are more meaningful because they show actual money flowing in/out, not just price movement.
What are MFI overbought/oversold levels?
MFI > 80 = overbought (volume-confirmed). MFI < 20 = oversold (volume-confirmed). More reliable than RSI because includes volume participation.
What is MFI divergence?
Price vs MFI disagreement. Price new high + MFI lower high = bearish (volume not confirming). Price new low + MFI higher low = bullish (accumulation).
How do I use the MFI centerline?
MFI > 50 = net money inflow (bullish). MFI < 50 = net money outflow (bearish). Simple filter for trade direction.
What MFI settings should I use?
14 periods is standard (same as RSI). Shorter periods more sensitive. Longer more stable. Test for your timeframe and asset.
Does MFI work for crypto?
Yes, especially well. Crypto has transparent volume data. MFI captures money flow accurately. 4H+ timeframes recommended.
MFI vs OBV—which is better?
Different purposes. MFI is bounded oscillator (overbought/oversold). OBV is cumulative (trend). MFI for timing, OBV for trend confirmation. Use both.