Drawing Support & Resistance
How to find the price levels that matter on a chart, draw them as zones instead of thin lines, and judge how strong a level is.
Why some prices matter more than others
Support is a price area where buying has repeatedly stopped a decline. Resistance is an area where selling has repeatedly stopped a rise. These levels exist because people remember prices. Buyers who missed a stock at $50 may step in if it returns there. Holders who bought at $80 and watched it fall may sell when it gets back to $80, just to break even.
Once resistance is clearly broken, it often becomes support, and broken support often becomes resistance. Traders call this role reversal.
Support below, resistance above, and role reversal after a break.
How to draw levels well
- Start with a daily or weekly chart and look for obvious swing highs and lows.
- Look for prices where the stock turned more than once.
- Draw zones, not razor-thin lines. Prices rarely turn at the exact same cent.
- Prefer levels with heavy volume around them; more shares changed hands there.
- Keep it simple: a few important levels beat a chart covered in lines.
What makes a level stronger
| Factor | Stronger level | Weaker level |
|---|---|---|
| Number of touches | Several clear turns | One touch |
| Timeframe | Weekly or monthly chart | A 5-minute chart |
| Volume | Heavy trading near the level | Light trading |
| Age | Recent and still relevant | Years old and far from price |
| Reaction size | Big moves away from the level | Small wiggles |
Rules of thumb for judging levels.
A caution about touches
Each time price returns to a level, some of the orders waiting there get used up. A level that has been tested many times in a short period can become weaker, not stronger, and eventually break. That is why a tight base with repeated tests of resistance often ends in a breakout. We covered bases in Chart Patterns and Breakouts.
Common mistakes
- Drawing so many lines that every price looks like a level.
- Expecting price to turn at an exact cent instead of a zone.
- Ignoring the bigger timeframe, where the strongest levels live.
- Placing stops exactly at obvious levels, where many other stops sit too.
Key takeaways
- Support stops declines; resistance stops rises; both come from memory of prices.
- Broken resistance often becomes support, and vice versa.
- Draw zones, not thin lines, and keep only the important ones.
- More touches, higher timeframes, heavier volume and bigger reactions make levels stronger.
- Repeated tests can also wear a level down.