What Is the Concept of the ‘National Best Bid and Offer’ (NBBO)?

The NBBO represents the highest displayed bid price (the best price a buyer is willing to pay) and the lowest displayed offer price (the best price a seller is willing to accept) across all competing regulated exchanges for a security. It is a regulatory requirement in the US, ensuring that investors receive the best available price when executing a trade.

Execution must occur at a price equal to or better than the NBBO, preventing excessive negative slippage.

How Is the “Best Bid and Offer” (BBO) Calculated across Multiple Cryptocurrency Exchanges?
Explain How the Effective Spread Is Used as a Metric for Broker Execution Quality
Why Is NBBO a Crucial Concept for Dark Pool Operations?
How Is the Price of a Trade Determined in a Dark Pool Environment?
What Is the ‘National Best Bid and Offer’ (NBBO) and Its Relevance to Dark Pools?
How Do ‘Mid-Point’ Dark Pools Operate?
What Is the “Mid-Price” of an Option and Why Is It Often Used as a Benchmark?
How Is ‘Volume-Weighted Average Price’ (VWAP) Used as a Benchmark for Trade Execution?

Glossar