Polymarket Up/Down price charts, real-time and historical.

An up/down market on Polymarket is a timed bet on one question: will the asset's price be higher when the window closes than it was when the window opened? Our chart plots the UP and DOWN token bid and ask side by side, the order book depth sitting behind each quote, the reference-price feeds the window settles against, and the price-to-beat captured the moment the epoch opened — all on the same market clock, so a move in the book lines up with the move in spot that caused it. The same layout covers all 28 markets.

The numbers come from five independent places: Binance for exchange spot, Pyth Hermes and Chainlink for oracle prices, the Polymarket CLOB for the book, and the price-to-beat we capture at open. Each one is recorded tick by tick as it arrives rather than sampled on a timer. Every completed epoch stays queryable as historical tick data for 90 days, so you can replay a window long after it resolved — more on what we record and why.

Resolution comes from price, not from a status flag: if the epoch's crypto price closes above its open, the window settles UP, and a tie settles DOWN. That one rule explains most of what looks strange near the close, and it is worth reading before you trade — how up or down markets work. Every resolved window is counted up in our aggregate record of outcomes and book calibration.