trade through

Trade Through

The completion of a client's order at a price inferior to the best posted bid or ask.

Notes:

Basically, the market maker who received the order is unable or unwilling to fill it at the best posted bid or ask price. As a result, the trade is instead executed at the market maker's price. A trade through will usually only occur if an exchange has not made specific rules to prevent it.

See also: Ask, Bid, Exchange, Market Maker, Trade, Trade or Fade Rule

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trade through

To transact an order on an exchange when a more advantageous price is available through another source.