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What is Initial balance (IB)?

The price range of the first hour of the main session. In this book, for gold, 08:20–09:20 ET (the first hour of the traditional COMEX day session).

In context

To compare days fairly, use the IB's own range as the unit. If the IB is $8 wide and price extends to $12 above the IB Low, the day's range is 1.5 × IB. IB multiples make a quiet day and a busy day comparable.

From Chapter 7: Auction Market Theory

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