Support and resistance

Support and resistance are price levels where a market has turned before. Support is a level where price has stopped falling and turned up. Resistance is a level where price has stopped rising and turned down. Traders watch these levels because they expect price to turn there again. A level is not a single line; it is a zone where price has turned more than once.

Why traders expect a turn

Traders expect a turn at a support or resistance level because price has turned there before. The more times price has turned at a level, the more traders watch it. When price approaches the level again, traders place orders to buy at support or sell at resistance, and those orders can cause the turn to happen again.

But the turn is not guaranteed. A level can break, and when it breaks, the move can be strong. The more traders watch a level, the more it can matter, and the more it can fail. A level that everyone is watching is a level that everyone is trading, and that can make the break more violent.

A zone, not a line

A support or resistance level is not a single line. It is a zone, because price does not turn at exactly the same point every time. One low may be slightly above the previous low, and another may be slightly below. The zone is the area where price has turned before, and it is drawn as a band, not a thin line.

Drawing a level as a zone is more honest than drawing a line. A line suggests that price will turn at exactly that point, but price rarely does. A zone shows that the turn can happen anywhere in a small range, and that the level is an area of interest, not an exact price.

How this site's rule reads a level: rule SR-1 needs at least three pivot highs (a resistance) or three pivot lows (a support), found with a 3 ATR zigzag, that lie within 0.5 ATR of one another and 30 to 250 sessions from first to last; no close may lie more than 1 ATR beyond the level in between. It counts as formed when, after the third touch, a session closes at least 2 ATR on the textbook side of the level, below a resistance or above a support, within 20 sessions. ATR is the average true range of the last 14 sessions.

When a broken resistance becomes support

When price breaks above a resistance level, that level can become support. This is because traders who sold at the resistance level and were wrong may buy back when price returns to that level, and traders who missed the breakout may buy at the same level. The level that was once a ceiling becomes a floor.

The same can happen in reverse: a broken support level can become resistance. This is not a rule, but it is a common observation. The level is a place where traders remember the previous turn, and they may act on that memory again, even after the level has been broken.

The more people watch, the more it can fail

The more people watch a support or resistance level, the more it can matter, and the more it can fail. A level that everyone is watching is a level that everyone is trading. If price breaks through the level, the move can be strong because many traders are forced to close their positions at the same time.

This is why a level is not a guarantee. It is a place where price has turned before, but it is not a place where price must turn again. The level is a description of what has happened, not a prediction of what will happen next.

A level is not a promise

Support and resistance are drawn from the past, but the past does not owe anyone a repeat. A price that turned at a certain area before may slice through it the next time without a pause. Traders who treat a level as a guarantee often learn this when a stop loss is hit and the market keeps moving against them. The honest way to hold a level is as an idea worth testing, not a rule waiting to be obeyed.

The failure of a level is just as useful as its success. When price breaks a support area that everyone was watching, it tells you that sellers were stronger than the buyers who defended it last time. That shift in pressure is information, even if it arrives as a loss. The mistake is to ignore the break and keep hoping the level will come back into force.

A level also loses meaning when it has been touched too many times in a short period. Each bounce off the same zone draws more attention, but it also consumes the orders that were resting there. Once those orders are filled, the level can become hollow, and the next touch may find no one left to defend it.

What the chart under the heading shows

The chart under the heading is a support level on gold futures. Three pivot lows touched the same zone: 1,670.50 dollars an ounce on 1 May 2020, 1,671.70 on 5 June 2020 and 1,673.30 on 8 March 2021, so the level sits at 1,671.83 and the touches are within 3 dollars of it over about ten months. On 18 March 2021 a close at 1,732.50 stood well above the level, and the figure counted as formed.

The chart is the cleanest by the rule's own measure of the six levels that rule SR-1 found in ten years, three on Brent and three on gold. It shows a level that held three times; it does not show that levels hold, and the page says so.

How many were found

Rule SR-1 found six levels in ten years across Brent crude and gold futures, three on each. The rule asks for three touches within half an ATR over 30 to 250 sessions and then a close at least 2 ATR on the textbook side, so a level that was touched twice, or touched three times and then broken, is not counted.

That is why six is small. Traders draw many more levels on a chart, because a drawn level costs nothing and a counted one has to meet numbers. The page counts only what met them.

A level works because people remember

What gives a support or resistance zone its power is not geometry or magic. It is memory. Traders remember where price reversed before, and they place orders near that area in case it happens again. Their collective action can make a level self-fulfilling for a while, as buy orders cluster below support and sell orders cluster above resistance.

Memory fades, though. The more time passes, the fewer traders carry a clear picture of the old reversal. New participants enter the market with no attachment to that level. A support zone that worked last month may be ignored this month because the crowd that respected it has moved on or been stopped out.

How a level is drawn changes how it works

There is no single correct way to draw a support or resistance line. Some traders connect the wicks of candles, others use the closing prices, and still others draw a rectangle across the entire zone. The method chosen changes where the level sits on the chart, and that changes where orders are placed. A line drawn through wicks will be higher than one drawn through bodies, and a breakout above one may still be inside the other.

This is why a level is a zone, not a line. The area between different drawing methods is often where price actually stalls. A trader who insists on a thin line will see more false breaks, while one who respects the whole zone will wait for a decisive close beyond it. The wider the zone, the more room for noise.

The first touch is the strongest

When a support or resistance zone is tested for the first time, it usually holds better than later tests. The reason is simple: the traders who caused the original reversal are still in the market and still defending their positions. Their orders are fresh, and their conviction is high. The second test may also hold, but with less force, as some of those original traders have taken profit or been shaken out.

By the third or fourth touch, the level becomes crowded and less reliable. More traders have seen it work, so more place orders there, but that also means more stop losses are hidden just beyond it. A break can trigger a cascade as those stops are hit, pushing price through the level quickly.

Support and resistance work differently in a trending market

In a strong uptrend, resistance levels are broken more often than they hold. Price pushes through previous highs because buyers are in control and willing to pay higher prices. A resistance zone in an uptrend is often just a pause before the next leg up. Traders who short at resistance in a trend can be run over repeatedly.

Support levels in an uptrend, however, tend to hold better. Pullbacks to support are where buyers step in again, and the level acts as a floor. The opposite is true in a downtrend: support breaks easily, while resistance holds. Knowing the trend direction changes which levels deserve more attention.