What Is a Bid-Offer Spread and Why Is It Important?

The bid-offer spread, also known as the ask-bid spread, is the difference between the highest price a buyer is willing to pay (the bid) and the lowest price a seller is willing to accept (the offer or ask). It represents the market maker's potential profit or the cost of immediate execution for a trader.

A narrow spread indicates high liquidity and lower transaction costs, while a wide spread suggests lower liquidity and higher costs. It is crucial for assessing market efficiency and trading costs in assets like crypto or options.

What Is the Bid-Ask Spread, and How Is It Related to Liquidity?
What Is the Role of a Market Maker in Setting the Bid-Offer Spread for a Financial Derivative?
In an Option Spread Strategy (E.g. a Bull Call Spread), How Many Times Does the Bid-Offer Spread Cost Factor In?
How Is “Implicit Cost” Related to Slippage and the Bid-Offer Spread?
Why Is Price Improvement a Key Factor in Best Execution?
What Is the Relationship between the Bid-Offer Spread and the ‘Cost of Immediacy’ in Derivatives Trading?
What Is a Smart Order Router (SOR) and How Does It Aid Best Execution?
What Is the Concept of the ‘National Best Bid and Offer’ (NBBO)?

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