Support and Resistance

Throw a ball in a room and it bounces between the floor and the ceiling. Throw it hard enough and it might crash through the ceiling into the room upstairs, where the old ceiling is now the new floor. Prices behave in a surprisingly similar way. They often bounce between price floors and ceilings, and when they break through one, it tends to switch jobs.

What is support?

Support is a price area where falling prices have tended to stop and turn back up, because buyers stepped in.

Why would buyers keep showing up at the same price? Mostly memory:

• Traders who bought there before and saw it bounce are happy to buy there again.
• Traders who missed the last bounce are waiting for a second chance.
• Sellers who sold there and saw price rise often stop selling at that level.

What is resistance?

Resistance is a price area where rising prices have tended to stall and turn back down, because sellers stepped in.

• Traders who bought near the top last time and suffered a loss are glad to sell when they get back to break-even.
• Traders take profits at levels where price turned before.
• Some traders sell short at levels that have capped price in the past.

Zones, not exact lines

Markets are messy. Price rarely turns at the exact same tick twice. Think of support and resistance as zones, a band of prices rather than a single number. "Support around ₹495 to ₹505" is far more useful than "support at exactly ₹500."

Round numbers often act as levels too, simply because people like them: ₹1,000, $100, or 1.1000 on EUR/USD.

How to draw support and resistance

1. Start on a higher timeframe. Open the daily or weekly chart first. Levels that show up there matter more than ones on a 5-minute chart.
2. Find obvious turning points. Look for places where price clearly reversed, ideally more than once.
3. Draw a horizontal zone. Cover the cluster of turns, using both the wicks and the bodies of the candles to set the top and bottom of the zone.
4. Judge its strength. More touches and sharper reactions usually mean a more important level. But a level that gets hit over and over can also weaken, as the orders waiting there get used up.
5. Keep it clean. Two to four levels on a chart is plenty. If you draw a line every few rupees, everything becomes a level and nothing means anything.

Here is what a range between support and resistance looks like:

₹560 - - - - /\  - - - /\  - - - -   resistance
            /  \      /  \
           /    \    /    \    /
          /      \  /      \  /
₹500 - - / - - -  \/ - - -  \/ - -   support

Role reversal

When price breaks clearly through a level, that level often flips roles:

• Broken resistance often becomes new support.
• Broken support often becomes new resistance.

                         /\    /
                        /  \  /
₹560 - - - - /\  - - - / -  \/ - -   old ceiling, now a floor
            /  \      /
           /    \    /
          /      \  /
₹500 - - / - - -  \/ - - - - - - -

Why does it happen? Traders who sold at the old resistance and watched price break higher often buy back near that level to cut their losses. Traders who missed the breakout wait for price to return there to buy. Both groups turn the old ceiling into a floor.

A worked example

A stock has bounced off the ₹500 zone three times in two months, and rallies have stalled near ₹560 twice. Your account is ₹1,00,000, and you risk 1% (₹1,000) per trade.

Plan A: trading the range

• Entry: buy near ₹505, as price returns to support.
• Stop loss: ₹488, below the bottom of the zone with a little room for noise.
• Take profit: ₹555, just under resistance.
• Risk per share: ₹505 − ₹488 = ₹17
• Reward per share: ₹555 − ₹505 = ₹50
• Size: ₹1,000 ÷ ₹17 = 58 shares, risking about ₹986

You are risking ₹17 to make ₹50 per share, nearly three times as much reward as risk.

Plan B: trading the breakout and retest

Later, price closes strongly at ₹575, above the ₹560 resistance. Instead of chasing, you wait for a pullback.

• Entry: buy at ₹563 as price retests the old resistance from above.
• Stop loss: ₹545, back below the zone. If price falls there, the breakout has failed.
• Take profit: ₹620, the next resistance on the weekly chart.
• Risk: ₹18 per share. Reward: ₹57 per share.

In both plans, the levels told you where to get in, where you were wrong and where to take profit. That is their real value.

Common mistakes

• Drawing levels on tiny timeframes where every wiggle looks important.
• Expecting exact bounces to the tick, then panicking when price pokes slightly through.
• Ignoring a clear break because you are attached to your line.
• Putting your stop exactly on the level, where many other traders' stops sit too.

Risk note: Support and resistance show where price has reacted before, not where it must react next time. Levels break all the time, so every trade still needs a stop loss.

Key takeaways

• Support is a floor where buyers tend to step in; resistance is a ceiling where sellers tend to appear.
• Treat levels as zones, and draw them on higher timeframes first.
• More touches and stronger reactions usually mean a more important level.
• Broken resistance often becomes support, and broken support often becomes resistance.
• Use levels to plan entries, stops and targets, not as guarantees.

Up next: Trends and Trendlines, where you learn to spot the direction of the market and trade with it instead of against it.