How Support and Resistance Work

Why levels form

Markets are made of orders. Prior highs, prior lows, round numbers and areas of heavy trading attract attention, so orders cluster there. When enough orders sit at a price, it can slow or reverse a move.

How to mark levels

• Start on higher timeframes (daily, then hourly) and work down.
• Mark obvious swing highs and lows — the ones anyone would notice.
• Think in zones, not exact lines.
• Include the prior day's high, low and close and the overnight range.
• Fewer, clearer levels are more useful than dozens.

Breaks and role reversal

When resistance breaks and price holds above it, the old resistance often acts as new support — and vice versa. Failed breaks, where price pokes through and quickly returns, are also informative.

Using levels for risk

The most practical use of a level is defining where a trade is wrong. A long idea at support is invalidated by a clean break below it. That gives a concrete exit to use in position sizing.

Combine levels with intraday context like VWAP for confluence.

Common mistakes

• Drawing too many levels until every price looks important.
• Treating levels as exact prices instead of zones.
• Entering without a level that would invalidate the idea.

Risk considerations

Levels fail regularly. Support and resistance describe where reactions have happened, not where they must happen.

Frequently asked questions