Support and Resistance Fundamentals

The Architecture of Price

At its core, financial trading is a continuous auction. Support and Resistance represent the fundamental laws of supply and demand acting on a chart. These are not arbitrary lines; they are psychological and institutional memory banks where major capital previously changed hands.

Defining the Zones

Support: A price zone where demand (buying pressure) has historically overwhelmed supply, preventing the price from falling further. It acts as a "floor."

Resistance: A price zone where supply (selling pressure) historically overwhelms demand, preventing the price from rising further. It acts as a "ceiling."

Polarity and Institutional Magnetism

One of the most reliable concepts in trading is the Principle of Polarity: when a major resistance level is finally broken to the upside, it frequently becomes the new localized support level upon a retest.

While retail traders draw simple horizontal lines connecting wicks, institutional traders view these levels as broad "liquidity zones." The AlphaSignal Volume Profile tool abstracts traditional chart lines by plotting actual historical volume nodes, revealing the true depth and density of these support and resistance structures.