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Overround (back)

overround_back Live in Exchange ticks

Definition

The back book in percent: 100 / back_price summed over the active runners (100 is a fair book; 102 is 2% over). Blank while any active runner has no back price.

Known at
Live Changes during the game. Use it with a time stamp.
Role
feature A value a model can read.
Dataset
Exchange ticks One row: market_id, selection_id, time
Type
number · tick · per snapshot
Status
Coming Planned. No read serves it yet.
Coming in (1)
Exchange
Also called
back_book, book_percentage, overround

How to read it

This field is planned. No read serves it yet, so a formula that names it has no value.

History (1)

2026-11-12
Field added

All changes to the catalog

More in Exchange ticks (51)

All (51) fields in Exchange ticks