Lesson 1 described the swings a chart is made of. Support and resistance are the prices where those swings tend to stop. Support is a price area where buying has repeatedly halted declines; resistance is an area where selling has repeatedly halted advances. Neither is a guarantee. Both are a map of where orders are likely to be waiting, and a good map tells you where a trade makes sense, where it is wrong and where it should be taken off. The Learn article support and resistance covers the basics; this lesson goes further into drawing, grading and trading levels.
Why levels exist
Price is set in a continuous auction, and traders remember prices. Three groups create most levels:
- Trapped holders. Investors who bought near $55 and watched the stock fall to $45 often sell when price returns to $55, glad to get out at break-even. Their orders create resistance.
- Those who missed the move. Traders who watched a stock bounce sharply from $48 without buying tend to place orders near $48 the next time. Their orders create support.
- Large buyers and sellers working orders. Funds that build a position over weeks often defend their average price, adding when the stock returns to it.
The more traders who share a reference price, the more orders gather around it. That is all a level is: a place where resting orders are likely to cluster. It explains both why levels work and why they fail. Once those orders are filled, nothing remains to stop price.
Where levels form
- Prior swing highs and lows. The clearest levels. A sharp reversal shows a strong imbalance between buyers and sellers at that price.
- Heavy-volume areas. Long sideways periods where many shares changed hands. Many holders have their cost near these prices, so the area tends to attract a reaction when price returns. A volume-by-price histogram shows them directly.
- Round numbers. Prices such as $50 or $100 attract orders, alerts and option strikes. A round number on its own is a weak level, but it strengthens other evidence nearby.
- Gaps. The edges of a price gap mark where trading jumped from one price to another. An unfilled gap often acts as support or resistance when price comes back to it.
- Prior period extremes. The previous day's and week's high and low, and the 52-week high, are references that many traders watch.
Moving averages such as the 50- and 200-day also act as levels, but they move every day. This lesson concentrates on horizontal levels; moving averages are covered in the Learn library.
Zones, not lines
Price rarely turns at the same cent twice. Orders are spread across a range of prices, and stop orders gather just beyond the obvious level, so tests tend to overshoot by a little. A single line drawn at one low will be "broken" again and again by moves that mean nothing. Drawing a zone avoids this.
- One edge is the cluster of closes, or candle bodies, where the reactions began.
- The other edge is the extreme wick.
- Width: usually between half and one ATR. A zone much wider than one ATR is often two separate levels, or a level too vague to trade.
A move into the zone that closes back out of it has not broken the level. As in lesson 1, a break is judged on the close.
Role reversal
When resistance breaks, it often becomes support on the first pullback, and broken support often becomes resistance. The mechanism follows from the order flow. Sellers who defended the old resistance have been filled or have given up. Buyers who missed the breakout, and short sellers who need to buy back, treat a return to the old level as a second chance and place orders there.
The first retest after a breakout is the most reliable. Each further return draws on fewer fresh orders. Role reversal is a tendency, not a rule: if price falls back through the zone and closes inside the old range, the breakout has failed, which is the subject of lesson 4.
Judging level quality
Not all levels deserve the same attention. Grade each one on the factors below; a level that scores well on most of them is worth planning around.
| Factor | Stronger | Weaker |
|---|---|---|
| Timeframe | Visible on the weekly chart | Visible only intraday |
| Reaction | Price left fast and far, several ATR | Small, slow bounces |
| Volume | Heavy volume at the turn | Light volume |
| Recency | Formed in the last few months | Years old and never retested |
| Confluence | Coincides with a round number, gap edge or the 200-day average | Stands alone |
| Cleanliness | Price has respected the zone | Price has cut through it repeatedly |
Touches need care. Two or three clean tests make a level visible to everyone, but each test also consumes the orders resting there. A level tested for the fourth or fifth time in a short period is more likely to give way than to hold.
Drawing levels consistently
- Start on the weekly chart, covering about two years. Mark the most obvious turning points.
- Move to the daily chart, covering six to twelve months. Add swing points with sharp reactions and the edges of long consolidations.
- Draw each as a zone from the bodies to the wicks, and merge zones that sit within about one ATR of each other.
- Keep only the nearest two or three zones above and below the current price.
- Note any confluence: round numbers, gap edges, the 50- and 200-day averages.
- Review once a week, and delete levels that price has crossed repeatedly without reacting.
A simple test: if a level is hard to see, other traders are probably not watching it either.
How to apply it
A plan for buying at support, written as rules:
- Context: a daily uptrend or the lower edge of a range. Support inside a downtrend breaks more often, so skip it or demand stronger evidence.
- Location: price pulls back into a support zone that grades well, never in the middle of a range.
- Trigger: price probes the zone and closes back above its upper edge, or prints a reversal candle there (lesson 3).
- Entry: at the trigger close, or on a move above the trigger candle's high.
- Stop: below the zone's lower edge with a buffer of 0.25 to 0.5 ATR, not exactly at the low, where stop orders cluster.
- Target: the lower edge of the next resistance zone, so that the exit comes before the selling.
- Filter: the reward to the target should be at least twice the risk to the stop; otherwise pass (see risk-reward ratio).
- Invalidation: a daily close below the zone.
Worked example (illustrative numbers). Swing lows at $81.20 and $81.70, with closes clustered near $82.00, define a support zone of $81.20 to $82.00. The next resistance zone is $88.50 to $89.20, and ATR is $2.00. Price dips to $81.60 and closes at $82.70, back above the zone.
| Item | Price | Basis |
|---|---|---|
| Entry | $82.70 | Close back above the zone |
| Stop | $80.70 | Zone low $81.20 minus 0.25 ATR |
| Target | $88.50 | Lower edge of the next resistance zone |
Risk is $2.00 per share and reward $5.80, or 2.9 times the risk. On a $40,000 account risking 1%, or $400, the position is 200 shares; see stop-loss and position sizing.
Common mistakes
- Too many lines. A chart covered in levels gives a reason to do anything. Keep the nearest two or three on each side.
- Lines instead of zones. Stops placed exactly at an obvious low are taken out by normal overshoots.
- Buying support in a downtrend. Each test there is more likely to fail.
- Treating levels as permanent. A broken level changes roles; a heavily tested one weakens.
- Drawing levels to fit the past. Lines placed after the fact to match every turn say little about the future.
- Ignoring gaps. Earnings or news can open a stock far beyond a level, filling a stop well below its price.
Support and resistance in Clear Tape
The technical analysis section of the chart drawer, which opens when you select a ticker, lists up to three support and three resistance levels, nearest first. They are built as this lesson recommends: confirmed swing highs and lows from about the last 250 sessions are pooled, so a broken resistance can serve as support; turns within one ATR of each other are grouped into a zone; and a zone counts as a level only after price has turned there at least twice. The daily pre-market analysis includes a key levels table with Clear Tape's support and resistance for each covered stock, labelled broke support, near support, in range, near resistance or above resistance. On Clear Cut, stock cards can show the nearest support and resistance with their basis, and following a stock closely adds price alerts at those levels. The pre-market analysis and Clear Tape's own levels on cards are available to Pro members; the other key levels on cards and price alerts to Tools and Pro members.
Summary
- Levels form where orders cluster: prior swing points, heavy-volume areas, round numbers, gaps and prior period extremes.
- Draw zones from bodies to wicks, usually half to one ATR wide, and judge breaks on closes.
- Broken resistance often becomes support on the first retest, and the reverse.
- Grade levels by timeframe, reaction, volume, recency, confluence and cleanliness, and plan trades only around strong ones with at least a 2:1 reward-to-risk.
Next: Lesson 3: candles in context.
For educational purposes only. Not investment advice.