precedence

Precedence

The established system of priorities of trades in an exchange. For example, the highest bid and lowest offer have highest precedence; the first bid or first offer at a price has highest priority, and large orders have priority over smaller orders.

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precedence

The sequence in which orders are executed on an exchange floor. For example, the order with the lowest ask or highest bid has precedence over other orders. With orders at an identical price, the one entered earliest has precedence. The precedence of orders is established by the rules of each exchange.