best ask
The lowest price at which competing market makers are currently offering to sell a security. A market order to buy is filled at the best ask, which increases and decreases continually in response to changes in supply and demand as buyers and sellers enter and exit the market. Compare to Ask; Best Bid; Bid. See national best bid and offer (NBBO).
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away from the market
Electronic Communication Network (ECN)
at the market
thin market
ask size
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