Depth
Depth is a real-time measure of how much you can buy or sell before the price moves significantly.
Prediction Markets 101 editorial team Updated April 16, 2026 1 min read
Definition
Depth is the size of orders sitting in the order book at various price levels. Deep books let you trade large without slippage.
Plain-English explanation
A market with $10k of bids between $0.48 and $0.50 is deeper than one with $2k. Depth matters most when you're sizing a trade — can you move $5,000 without causing slippage?