Resistance

In technical analysis, resistance refers to a price level on a chart where there is significant selling pressure and an asset struggles to move above that level. It represents a point where supply tends to overwhelm demand — meaning that as the price approaches this level, sellers become more active and buyers become more hesitant, causing the price to stall or reverse. Resistance levels are identified by looking at historical price data and finding areas where the price has repeatedly failed to break through, creating a visible ceiling on the chart.

Resistance can take several forms. Horizontal resistance is a flat price level that the asset has tested and rejected multiple times. Diagonal resistance, often called a descending trendline, occurs when a series of lower highs creates a downward-sloping barrier. Moving averages, round numbers, and prior support levels that have since been broken can also act as resistance. The more times a price level has been tested and rejected, the more significant it is considered to be, as it represents a well-established area of supply.

For traders, resistance levels are important decision-making tools. A breakout above a key resistance level — especially on high volume — is often interpreted as a bullish signal, suggesting that the balance of supply and demand has shifted and the uptrend may continue. Conversely, a rejection at resistance can signal a potential reversal or continuation of a downtrend. Algorithmic traders frequently use resistance levels to set profit targets, trigger short entries, or define stop-loss levels, integrating them with other indicators to filter out false breakouts.