Mean reversion is one of the most reliable edges in Indian equities, especially when volatility spikes and quality stocks get oversold. This guide shows you how to build a mean reversion screener NSE traders can run daily using RSI, Bollinger Bands, and volume confirmation. You can pair it with our reversal screener to shortlist candidates in seconds.

70/30

RSI Overbought/Oversold

2.0

Bollinger Band Std Dev

1.5x

Volume Confirmation

200

SMA Trend Filter

Why Mean Reversion Works on NSE

NSE stocks frequently overshoot on both sides due to retail sentiment, FII/DII flows, and index rebalancing. When a fundamentally sound stock drops 2 standard deviations below its 20-day mean, the probability of a bounce increases sharply. This is why mean reversion strategies remain popular among Indian swing traders. For a deeper understanding of how momentum and reversal interact, see our technical screening guide on RSI and MACD.

The key is filtering out value traps. A stock falling on weak earnings or regulatory action will not revert — it will keep trending down. By adding a 200-SMA trend filter and volume confirmation, you ensure you are buying temporary dislocations, not structural breakdowns. Combining mean reversion with sector context from our sector rotation RRG guide further improves win rates.

📌 Key Insight
Mean reversion works best when the broader trend is intact. Always check that the stock is above its 200-SMA before buying an oversold dip.

How to Build the Mean Reversion Screener

Set the RSI Filter — Use RSI(14) below 30 for oversold conditions. On NSE, RSI below 25 often marks capitulation lows in large caps.

Add Bollinger Band Condition — Require price to close below the lower Bollinger Band (20,2). This confirms a 2-standard-deviation stretch from the mean.

Apply Trend Filter — Keep only stocks trading above their 200-day SMA. This avoids catching falling knives in structural downtrends.

Confirm with Volume — Look for volume at least 1.5x the 20-day average on the reversal day. You can scan for this using our OBV divergence buy screener.

Rank and Shortlist — Sort results by distance from the 20-day mean. The furthest below the mean with the strongest volume gets priority.

💡 Pro Tip
Combine mean reversion signals with market breadth. When breadth is extremely weak, wait for a breadth thrust before entering oversold bounces.

Key Indicators and Thresholds

Indicator	Threshold	Signal	Why It Matters
RSI(14)	< 30	✅ Bullish	Signals oversold condition likely to revert to mean.
Bollinger Bands (20,2)	Close < lower band	✅ Bullish	Confirms 2-standard-deviation stretch from 20-day mean.
200-day SMA	Price > 200-SMA	⚡ Watch	Ensures long-term trend is intact; avoid if below.
Volume	> 1.5x 20-day avg	✅ Bullish	Confirms institutional participation in the reversal.
ADX(14)	< 20	❌ Bearish	Strong trend (ADX > 25) means mean reversion may fail.

✅ Mean Reversion Entry Checklist

✓RSI(14) is below 30 on daily timeframe

✓Price closed below lower Bollinger Band (20,2)

✓Stock is trading above its 200-day SMA

✓Reversal day volume is at least 1.5x the 20-day average

✗Avoid if ADX(14) is above 25 — strong trend may continue

⚠️ Common Mistake
Do not buy every oversold stock. Without a trend filter and volume confirmation, you risk catching falling knives in structural downtrends.

Try It on QUANTSCASE

Run these screeners on QUANTSCASE to find mean reversion candidates instantly. Start with the reversal screener, then cross-check with volume and volatility filters. For a broader view of market conditions, check our market breadth dashboard.

Reversal Screener →

Finds oversold stocks showing early reversal signals.

OBV Divergence Buy →

Identifies bullish volume divergence for confirmation.

NR7 Compression →

Spots narrow-range days before expansion moves.

Scan 1,800+ NSE stocks for oversold reversals in seconds

Find Mean Reversion Trades Now

Run Reversal Screener — 1,800+ NSE Stocks

This guide is for educational purposes only and does not constitute financial advice. Always do your own research before trading.