Traded volume per period, stacked by the split you choose. “Market” means asset × duration, e.g. BTC 15m, with Up/Down, strike and range contracts combined. Each venue has its own scale.
Unique wallets that traded in the period, as makers or takers. A wallet active in two markets counts once in each, so the stack can exceed the overall unique count, shown as the line.
Fees generated by short-term price markets, and their share of each venue's total fee revenue. Polymarket Intl fees are actual on-chain fees. Kalshi and Polymarket US fees are estimated from their published fee formulas.
How dollars traded in short-term price markets are spread across wallets: what share of volume the most active wallets account for. Kalshi and Polymarket US don't publish account-level trades, so this covers Polymarket Intl only.
Snapshots of the “Up” side of the currently-live 15m window, sampled about once a minute. Top of book is the dollars resting at the best bid and best offer. Depth is the dollars resting within 1¢, 2¢ and 5¢ of the midpoint: how much you could trade before moving the price that far. Snapshot history starts on –; depth bands start on –.