Trading Compression – compression is a very slow price movement that indicates weakness on buying and selling orders.
By this type of movement, the price collects all pending orders on its way up or down and leaves no unfilled orders behind it.
Compression is usually defined by small and messy candles that move up or down in a very tight range.
Usually after compression, near support or resistance levels, we will find big breakout in the opposite direction, since there are no pending orders left to stop the movement.