Using the spread itself as a signal

[Shadow Trader]

The spread is usually treated as a cost to minimise. It can also act as an information source about market conditions.

When the spread widens suddenly without a scheduled event, liquidity providers are pulling back, often because of uncertainty or rising volatility. That can precede a burst of movement, and it is worth noticing even before price reacts.

When the spread stays unusually tight during a move, it suggests that liquidity is deep and that the move has support. Moves with a stable, tight spread often follow through more cleanly than moves where the spread is unstable.

A simple way to use this is to chart the spread as a separate line beneath price, or to set an alert when it exceeds a multiple of its recent average.

It will not predict direction, only conditions. But conditions matter. A breakout that arrives with a widening spread has a different risk profile from one with a steady spread.

Curious whether you have ever tracked spread alongside price, and did it change how you judged a breakout?