Developed by Tom Williams, a former syndicate trader, VSA is based on a simple yet profound premise:

In the world of technical analysis, most traders focus on price. They watch candlesticks, chart patterns, and moving averages. But price alone is a lie without volume. Imagine watching a movie with the sound turned off—you see the action, but you miss the emotional context. Volume Spread Analysis (VSA) turns the sound back on.

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Start small. Pick one asset (e.g., a liquid stock or index ETF). Apply these principles on the daily chart. Look for "no supply" after a drop and "no demand" after a rally. Over time, the hidden volume spread patterns will jump off the screen at you.

By mastering the ABCs of VSA—ccumulation, B uying pressure, C limax, D istribution, E ffort vs. Result, and F ake breakouts—you stop being the prey and start trading like the predator.