Spread
What Is Spread In Finance?
A Spread refers to the difference between two related financial values, most commonly the bid and ask prices of a financial instrument. It serves as a key measure of market liquidity, trading efficiency, and transaction cost.
How It Works
In financial markets, spreads exist in various forms. The most common is the bid-ask spread, which is the difference between the highest price a buyer is willing to pay (bid) and the lowest price a seller will accept (ask). Tighter (narrower) spreads indicate more liquid and competitive markets, while wider spreads may signal volatility, low liquidity, or market stress.
Spreads also apply to bond yields (yield spreads), credit risk premiums (credit spreads), and complex options strategies involving multiple contracts. Market makers and liquidity providers profit by buying at the bid and selling at the ask, capturing the spread as compensation for providing liquidity and bearing short-term risk.
Example
In forex, if USD/CHF is quoted as 0.8990/0.8994, the spread is 4 pips. A trader buying at the ask and selling at the bid incurs a 4-pip transaction cost. In equities, a stock quoted at $100.25 (bid) and $100.30 (ask) has a $0.05 spread. In bonds, a corporate bond yielding 5.5% versus a Treasury at 4.0% shows a credit spread of 150 basis points.
Key Concepts / Components
- Bid-Ask Spread: The difference between what buyers will pay and sellers will accept; the most visible form of a spread.
- Yield Spread: Difference in yields between two bonds, often used to evaluate creditworthiness and relative value.
- Credit Spread: The premium investors demand over risk-free rates for assuming credit risk.
- Options Spread Strategies: Structured trades involving the simultaneous buying and selling of options to manage risk and cost.
- Basis Point: A unit equal to 0.01%, commonly used in measuring yield spreads.
- Pip: Smallest price movement in forex markets, typically used to measure bid-ask spreads.
When It’s Used
Spreads are used across asset classes to measure liquidity, evaluate execution quality, manage credit risk, and implement trading strategies. Active traders monitor spreads to minimize transaction costs, while portfolio managers consider spreads when assessing total cost of ownership. In macro trading, credit and yield spreads offer insight into economic outlook and market sentiment.
Related Terms
- Bid Price
- Ask Price
- Market Maker
- Liquidity
- Yield Spread
- Credit Spread
- Transaction Costs
- Pip
- Basis Point
- Option Strategies
References
- Harris, L. Trading and Exchanges: Market Microstructure for Practitioners. Oxford University Press.
- Hull, J.C. Options, Futures, and Other Derivatives. Pearson.
- Investopedia: Understanding the Spread
- Fabozzi, F.J. Bond Markets, Analysis, and Strategies. Pearson.
- Corporate Finance Institute: Bid-Ask Spread