Reading liquidity: a desk primer
Price tells you where the market is. Liquidity tells you whether it can stay there. Here is how desks read the second chart.

A clean breakout into thin liquidity is not a breakout. It is a setup for the move back. Before you trust a level, you have to know who is standing behind it.
Depth before direction
Resting orders are the floor. When the book is deep, a large print barely moves price; when it is thin, the same size walks the tape three levels. The same headline produces a different chart depending on what was waiting underneath.

Backtest the fills, not just the rules
Most strategies die in the gap between the price a backtest assumes and the price a real book delivers. Model slippage as a function of depth and your edge survives contact with the market, or it tells you early that it never existed.


