The third law compares effort and result: volume is the effort expended, and the resulting price move shows whether that effort achieved anything. When the two agree, the move is healthy; when they disagree, something is being hidden.
When effort and result diverge
Imagine a large down-candle on huge volume that fails to make a meaningful new low. That is enormous selling effort with little downward result — a sign that buyers are absorbing everything offered, hinting at hidden demand beneath the surface.
The same logic works in reverse. A push to new highs on shrinking volume is a large result achieved with little effort, which can mean the move is running on fumes. Divergence between effort and result is one of Wyckoff's most useful early warnings.
- High volume, small result: absorption — the opposing side is stepping in.
- Low volume, large result: little resistance, but momentum may be thin.
- High volume with a wide, closing move: effort and result agree — genuine strength.
- A climactic bar that reverses: exhaustion of the prevailing side.
Volume is effort, price movement is result — when heavy effort produces little result, the opposing side is quietly taking over.
Volume interpretation is an art, not a formula. Data quality varies by market, a single bar rarely decides anything, and apparent divergences sometimes resolve against you. Use effort versus result to build a case, then confirm it with structure.