Bid-Ask Spread
What Is the Bid-Ask Spread?
The bid-ask spread is the difference between the highest price a buyer is willing to pay for a security (the bid price) and the lowest price a seller is willing to accept (the ask price).
This spread represents the gap between supply and demand in a financial market.
Why It Matters
The bid-ask spread reflects market liquidity and trading costs. A narrow spread usually indicates an actively traded security with strong liquidity, while a wider spread may signal lower trading volume or higher uncertainty.
Investors indirectly pay the spread when buying and selling securities.
How the Bid-Ask Spread Works
Market participants submit buy and sell orders through exchanges or brokers.
For example:
- Bid price: $49.95
- Ask price: $50.00
The bid-ask spread is $0.05.
When an investor buys at the ask price and sells at the bid price, the spread represents the transaction cost.
Market makers often help maintain liquidity by continuously posting bid and ask prices.
Example
An investor buys shares at $50.00 (ask price). If they immediately sold the shares, they might receive $49.95 (bid price). The $0.05 difference is the bid-ask spread.
Bid-Ask Spread vs Commission
- The bid-ask spread reflects the market price difference between buyers and sellers.
- A commission is a fee charged by a broker to execute a trade.
FAQs About Bid-Ask Spread
Why do bid-ask spreads exist?
They reflect supply, demand, and the costs of facilitating trades.
Are spreads smaller for popular stocks?
Yes. Highly liquid securities typically have narrower spreads.
Do spreads change throughout the day?
Yes. Market conditions and trading activity affect spreads.
Related Terms
