Derivatives · glossary

Bid, offer and mid

A dealer's two prices: the bid, at which it buys, and the offer, at which it sells. Mid is halfway between them. Statements on this file are at mid, but nobody deals at mid, so a party ending a trade gets a little less. Chapter 9

Explained in Chapter 9, What the Swap Is Worth, of Derivatives.

How it comes up, in Chapter 9
A dealer quotes two prices: the bid, at which it will buy, and the offer, at which it will sell. Mid is the point half way between them. It is a fair measure of who is ahead, but nobody actually deals at it. Every statement in the file is at mid unless it says otherwise.
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