Every trading strategy ultimately comes down to one thing: buying near support and selling near resistance. Master this and you have mastered the most important concept in trading.
What is Support?
Support is a price level where buying pressure is strong enough to stop or reverse a downward move. Think of it as a floor beneath the price. When price falls to this level, buyers see value and step in — creating demand that pushes price back up.
What is Resistance?
Resistance is the opposite — a price ceiling where selling pressure overwhelms buying interest. When price rises to this level, sellers who bought lower take profits, and new short-sellers enter. This supply pushes price back down.
How to Identify Key Levels on NSE Charts
The best support and resistance levels are those that have been tested multiple times. Each time price bounces from a level, that level becomes more significant — more market participants are watching it.
To find them on any chart:
- Start with the weekly chart to find major levels
- Mark previous swing highs and swing lows
- Look for areas where price has stalled or reversed multiple times
- Move to the daily chart and confirm these levels
The Role Reversal Principle
One of the most powerful concepts in technical analysis: broken support becomes resistance, and broken resistance becomes support.
When a strong support level is decisively broken, the same level often becomes a new resistance level. Traders who bought at support are now "trapped" in losing positions. When price rallies back to that level, they sell to get out even — creating fresh selling pressure.
Round Numbers Are Powerful
On the Nifty 50 and individual stocks, round numbers (like 19,000, 20,000, 22,000 on Nifty, or ₹1,000, ₹500, ₹2,000 on individual stocks) act as natural support and resistance. This is pure market psychology — traders naturally place orders at round numbers.
Trading the Bounce vs the Breakout
There are two ways to trade support and resistance:
The Bounce: Buy when price approaches support with signs of rejection (bullish candle, high volume). Your stop-loss goes just below the support level.
The Breakout: Buy when price closes decisively above resistance on high volume. Wait for a retest of the broken level as new support before entering — this reduces the risk of trading false breakouts.
Combining With Other Tools
Support and resistance levels become even more powerful when they align with:
- Moving averages (50 EMA, 200 EMA acting as dynamic support)
- Fibonacci retracement levels (61.8% is particularly respected)
- High-volume price levels from the Volume Profile
- Previous day high/low levels in intraday trading
When multiple tools point to the same price level, that level is worth watching very closely.