Support and resistance are fundamental concepts in technical analysis that identify price levels where buying or selling pressure has historically been strong enough to reverse or pause a trend. A support level is a price floor — a level where buyers have consistently stepped in, preventing the price from falling further. A resistance level is a price ceiling — a level where sellers have consistently emerged, capping upward price movement. These levels form because of collective market psychology: traders remember where the price previously bounced or stalled and expect similar behaviour in the future, creating a self-fulfilling dynamic.
Key support and resistance concepts: Role reversal — when a support level is broken, it often becomes resistance, and vice versa; Strength — the more times a level has held, the more significant it is; Round numbers — prices like $50,000 BTC or $3,000 ETH act as psychological support/resistance; High-volume nodes — price levels with the most historical trading volume (visible on a Volume Profile chart) are the strongest S&R; and Confluence — a level is more significant when multiple tools (previous highs, Fibonacci levels, moving averages) all agree on the same price zone. Traders use S&R levels to identify entry points, place stop-losses just below support or above resistance, and set profit targets at the next major resistance.
Example: Bitcoin consolidates between $58,000 (support) and $65,000 (resistance) for 6 weeks. A trader buys near $58,000 with a stop below it, targeting $65,000. When BTC finally breaks above $65,000 with volume, that level becomes new support.
Learn more: Investopedia — Support and Resistance Basics
