Volume Spread Analysis (VSA) is a form of technical analysis which attempts to look into price action in relation to volume. VSA is the study of the market forces of supply and demand, and the manipulation of those forces through the psychology of crowd behavior, through examining the relationship between the quantity of volume on a price bar, the spread of the price or range of the bar, and the closing price on the height of that bar. Studying these variables establishes the equilibrium of demand and supply as well as the likely near term direction of the market.
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