Spread Compression
Spread compression occurs when the difference between the bid and ask price narrows, often due to increased competition or higher trading volume. This makes trading cheaper for participants and indicates a more efficient market environment.
In highly liquid assets, spreads can become extremely tight, sometimes reaching the minimum tick size allowed by the exchange. Compression is a sign of market maturity, as it suggests that liquidity providers are competing aggressively for order flow.
However, during times of market stress or low participation, spreads can rapidly expand, reversing any previous compression. Understanding the drivers of spread compression helps traders identify when market conditions are optimal for entering or exiting positions.