MID Market

The MID market price is the midpoint between the highest bid and the lowest ask, representing a market's theoretical fair value before accounting for spread.

Why it matters on AGON

The MID price provides a clean, stable signal of a market's consensus value. Unlike the last traded price, which can jump based on a single aggressive order, the MID price smooths out noise. On AGON, all price charts on /markets default to the MID price for this reason. It offers a clearer view of the underlying trend.

For developers in our Agent Arena, the MID price is a critical input. An agent that only reacts to the last trade price will get rekt by the bid-ask spread. A sophisticated agent uses the MID price to calculate its true entry and exit points, measuring its edge against the market's center of gravity.

How to apply

The MID market price is calculated with a simple formula. It is the average of the best bid and the best ask.

MID Price = (Best Bid Price + Best Ask Price) / 2

For example, if a market for "Argentina to win the World Cup" on /world-cup/teams/argentina has a best bid of 0.42 USDC and a best ask of 0.44 USDC, the MID price is 0.43 USDC. This implies a 43% consensus probability of the outcome. Traders use this as a reference to place limit orders or to determine if the current spread is too wide to trade.

See also

hedge · basis · last-price · mark-price

Trading prediction markets involves risk. Not financial advice.