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Effort versus result

Wyckoff's principle that volume is effort and price movement is result, and that a mismatch between the two is informative.

Heavy volume with little price progress means one side is being absorbed: a lot of effort produced little result. Light volume with a large move means there is nothing in the way, which can be genuine strength or simply a thin market.

This is the most testable part of the Wyckoff framework and the ancestor of modern tools like cumulative-delta and footprint-chart, which measure the same idea with far better data by separating buying and selling at each price.

The limitation is that raw volume is ambiguous. Every transaction has a buyer and a seller, so volume alone never tells you who was aggressive. Delta-based tools do, which is why effort-versus-result reasoning is much stronger on order-flow charts than on a daily volume histogram.

Related: wyckoff-method, cumulative-delta, footprint-chart, volume-climax, volume

See it drawn

Original diagrams for the ideas on this page. Illustrative, not real market data.

How a call option's delta changes with the underlying priceAn S-shaped curve rising from zero, passing through about a half at the strike, and flattening near one.Delta of a call option1.000.5008090110120Out of the moneyAt the moneyIn the money1.00 means it moves one-for-one with the stockdelta ≈ 0.50 at the strikeStrike 100Underlying price
Delta across the range of prices. Delta says how much a call's price moves for a one-point move in the stock. Far below the strike it is near 0 and the option barely reacts; at the strike it is about 0.50; far above it approaches 1 and tracks the stock.

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