Support and Resistance

How it works

Support and resistance are among the oldest ideas in technical analysis. Support is a price zone where demand has historically been strong enough to stop a decline — buyers step in and the price bounces. Resistance is the mirror image: a zone where selling pressure has repeatedly capped advances. These levels form because traders remember past prices and place orders around them, making them partly self-fulfilling.

How traders use it

Traders look to buy near support and sell near resistance in a range-bound market, or to trade breakouts when price decisively breaks through. A key principle is role reversal: once a resistance level is broken, it often becomes new support, and vice versa. Support and resistance can come from previous swing highs/lows, round numbers, moving averages, or trendlines.

In India

On Nifty, Bank Nifty and individual NSE stocks, retail traders constantly discuss "key support" and "resistance" levels in daily market commentary. Option traders pay special attention because heavy open interest at a strike often acts as support or resistance for the index near expiry. Charting apps like TradingView and Kite let you draw these zones easily.

Common mistakes

Treating support and resistance as exact lines rather than zones is a frequent error — price often overshoots a level slightly before reversing, triggering tightly placed stop-losses just before the move you expected. Another mistake is assuming a level will always hold: in strong trends or on big news, support breaks decisively and the fall accelerates as trapped buyers rush to exit. Beginners also draw too many levels until the chart "confirms" whatever they want to see, and they ignore the bigger-timeframe picture (a daily support means little if the weekly trend is sharply down). The disciplined approach is to mark a few clear, well-tested zones, wait for confirmation from volume or candlestick patterns at the level, and always pair the trade with a stop-loss placed beyond the zone rather than blindly buying every touch of support or selling every touch of resistance.