What it means
Spread widening describes a larger difference between the bid price and the ask price. It can happen when liquidity becomes thinner, volatility increases, or pricing conditions change.
Why it matters in live markets
Spread widening matters because it changes the visible pricing environment. During fast markets, the bid and ask can update quickly, and the spread may become wider than during calmer conditions.
Key points
- Spread widening means the bid-ask gap becomes larger.
- It can occur during volatile or low-liquidity conditions.
- It is related to, but different from, slippage.
- It can affect how platform pricing appears in real time.
- Spread widening is a market-condition concept, not a forecast.
Example
If a market normally shows a small gap between bid and ask but that gap becomes larger around a news event, traders may describe this as spread widening.
Related glossary terms
Spread, Bid and ask, Liquidity, Slippage, Volatility
Where you will see it
You will usually see spread widening discussed in execution education, fast-market explainers, liquidity commentary, and trading environment content.