Support and resistance: how to mark zones

What support and resistance are

Support and resistance are areas where buyers previously stopped a decline (support), or sellers previously capped a rally (resistance). After a breakout and acceptance of price, the roles often reverse (resistance becomes support), but only after closes and a retest — not after a single wick on M5 (see Japanese candlesticks).

On the Warsaw Stock Exchange, zones from D1 and W1 matter more than micro levels from M15 in the middle of a session (the context covered in Trend, structure and range). On a CFD you have to account for the spread: a textbook “exact” level may sit on the other side of the spread. A false breakout — price leaving the zone and then coming back — is part of the game, so write your invalidation and whether you trade the retest into the plan.

How to mark a zone you can actually measure

The biggest problem with zones is how arbitrary they are: the same chart, two people, two different widths. Instead of drawing “by eye”, use two numbers.

1. Zone width. Mark the area from the extreme wick to the close of the reaction candle — that is the narrowest version that makes sense. Then check whether it fits within half the average daily range:

ATR(D1)   = average daily range over the last 14 sessions
width     = |upper edge − lower edge|
condition = width ≤ 0.5 × ATR(D1)

A zone wider than half of ATR stops being a level and becomes a band — and then the stop beyond the zone sits so far away that the R:R makes no sense. This is the test that eliminates most zones drawn in a hurry.

2. How often the zone actually worked. Before you treat a zone as important, count its history: go back 100–200 candles and note every touch. How many of them produced a reaction of at least 1R in your direction, and how many cut through the zone like paper?

“A reaction of at least 1R” is a deliberately strict threshold. A 5-pip bounce followed by a return into the zone is not a reaction — it is noise that only looks like a reaction on a chart reviewed in hindsight.

How to draw zones usefully

Keep few zones on the chart. If you cannot say which one is more important, you remove one — you do not add one. That is anti-overfit hygiene: fewer lines, more repeatable observations in the journal.

Educational example (USD)

A demo account of $20,000, risk 1% = $200. A support zone is, for teaching purposes, 50 points wide on an index CFD; the stop goes below the lower edge of the zone. You choose the position size so that a stop-out costs $200. If the stop “has to” sit in the middle of the zone for the R:R to look pretty, the setup is too tight relative to the noise — the market is not to blame. The numbers are illustrative.

Three scenarios after price touches a zone

Each of these three scenarios calls for a different response — which is why a zone on the chart alone is not enough. You need a rule that says what you do in each of the three cases before price even reaches the level.

When a zone says “do not trade”

Four situations in which the presence of a zone is not a reason to enter:

1. The zone sits in the middle of a larger range — there is no room for a sensible invalidation on either side.
2. The zone is wider than 0.5 × ATR(D1) — the stop beyond it is disproportionately far away.
3. The zone has no history of reactions (0–1 touch) — you are drawing it because it “looks nice”, not because the market reacted there.
4. Price is already inside the zone — entering the middle of an area means guessing where to place the stop. Wait for a candle to close outside the zone or right at its edge.

Zone journal — fill it in yourself

This exercise turns drawing lines into measurement. Five sessions, one instrument, at most three zones.

After five rows, calculate the percentage of reactions for first-tier zones and for the rest. If the difference is small, then in your execution an “important zone” is not yet a filter — and that is the correct conclusion.

How to combine zones with risk

A zone without a position size plan is decoration. First mark the invalidation beyond the area, then calculate the position size for a fixed 1R. On index CFDs, remember the point value in USD at your broker — the same “50-point” stop costs different money than it does on forex. If the R:R falls below your plan’s minimum once the spread is included, you skip the setup instead of tightening the stop.

What to avoid

• Twenty lines on every timeframe at once.
• An invalidation triggered “because it crossed by 1 pip”, with no rule about a candle close.
• Trading every touch of a zone without a bounce / break / fakeout playbook.
• Mixing levels from broker A’s chart with an entry at broker B without checking the quotes.
• Moving the stop deeper into the zone “just a little longer” — that is psychology, not technical analysis.

Common mistakes when working with zones

• Drawing the zone only after price has already bounced — that is confirmation in hindsight, not analysis in advance.
• Marking the same zone with a different width depending on your mood — the width should follow from specific swings and consolidations, not from whether you want the setup to “work out”.
• Ignoring the hierarchy of levels — a zone from a weekly chart usually means more than a similar zone from a 15-minute one.
• Believing a good zone is enough without measurement — without the numbers from the tables above, you cannot tell a zone that works from one you drew because it looked nice.

Exercise

On the D1 chart of one liquid instrument, mark exactly three zones (no more) and for each one calculate the width relative to ATR(D1) and the touch history over 200 candles. For five H1 sessions, record every reaction at a zone — bounce / break / fakeout — together with the paper result in R. The goal is at least five events with a label and a date: a measurable sample, not a gallery of screenshots.

Measurable exercise

Pick one demo instrument. Write down: your capital, 1% risk in USD, the distance to invalidation, the resulting position size, and whether you end the session once you hit a −2R limit. One row in a spreadsheet beats three “gut feelings” from a chat.

Common questions

A line or a zone — which should I draw?

A zone. The market rarely turns on a single pip; an area built from swings and consolidations is more practical given spread and noise. But the zone must have a measurable width — check that it fits within 0.5 × ATR(D1).

When does resistance become support?

After price is accepted above it (a close, often followed by a retest) — not after a single wick. Define this in your plan in one sentence.

How many levels should I keep on the chart?

A few from a higher timeframe are enough. If you do not know which one matters, you remove one — you do not add one.

How do I know a zone actually works?

From its history, not from an impression. Scroll the chart back 100–200 candles and count the touches and reactions before you start trading the zone. If three touches produced no move of at least 1R, it is not a zone — it is a line you drew because it looked that way.