Definition
Best Bid and Offer represents the highest price buyers are willing to pay (best bid) and the lowest price sellers are willing to accept (best offer/ask). The National Best Bid and Offer (NBBO) aggregates quotes across all exchanges to show the best available prices market-wide.
Formula
NBBO Spread = Best Ask - Best Bid
Example
The NBBO shows best bid $49.95 and best offer $50.05. You can buy instantly at $50.05 or sell at $49.95.
FAQ
What is Best Bid and Offer (BBO)?
The highest bid and lowest ask prices available in the market.
How do you calculate Best Bid and Offer (BBO)?
A common formula for Best Bid and Offer (BBO) is: NBBO Spread = Best Ask - Best Bid
Why is Best Bid and Offer (BBO) important?
Best Bid and Offer (BBO) helps investors evaluate trading mechanics and make more informed decisions.