Last updated: March 2026
Trading Terms Explained
Simple, jargon-free definitions for every term used on the platform.
24h Volume
Total dollar amount traded in the last 24 hours across all platforms.
Accuracy
Percentage of predictions a user got correct out of all their resolved predictions.
Active Whales
Number of whale-level traders who made at least one trade in the past 24 hours.
Arbitrage
Buying on one platform and selling on another to profit from price differences — regardless of the event outcome.
Arbitrage grade
Risk is a 0–100 score from our feed (lower is better). We mix liquidity, time to settlement, gross edge, and how much fees eat the edge, then map that to A–D.
At Risk
The total amount of money you currently have in open positions that could be lost.
Brier Score
A statistical measure of prediction accuracy (0 = perfect, 1 = worst). Lower is better.
Data Coverage
How many hours per day our system actively tracks prices across all platforms.
Est. ROI
Estimated Return on Investment after accounting for fees and spread. This is your projected percentage profit.
Events Tracked
Total number of unique prediction market events we're monitoring across all platforms.
Gross Spread
The raw price difference between platforms before any fees are deducted.
Implied Probability
The market's estimated chance of an event happening, derived from the trading price (e.g., 65¢ = 65% chance).
Kalshi
A US-regulated prediction market exchange approved by the CFTC.
Liquidity
How easy it is to buy or sell shares without affecting the price. Higher liquidity = easier trading.
Match confidence
Match confidence is 0–1 when we have enough data; if it’s blank, we haven’t scored it yet. It blends embedding and title similarity across venues, uses the weakest matching pair, then combines event-level and market-level signals.
Mega Whale
An elite trader making very large bets ($10K+). These traders often have deep market insight.
Net Flow
The balance of whale money flowing into YES vs NO positions. A high YES % means whales are bullish.
Net Spread
The spread remaining after subtracting trading fees from both platforms. This is your actual profit potential.
Polymarket
A CFTC-regulated prediction market (via QCX LLC/Polymarket US) built on blockchain technology. Available to US residents for sports markets.
PredictIt
A research-based prediction market operated by Victoria University of Wellington.
Realized P&L
Profit or loss from positions you've already closed. This is actual money gained or lost.
Risk Grade
Risk is a 0–100 score from our feed (lower is better). We mix liquidity, time to settlement, gross edge, and how much fees eat the edge, then map that to A–D.
ROI
Return on Investment — the percentage profit you'd earn relative to the amount you put in.
Spread
The price gap between platforms for the same event. A bigger spread may signal an arbitrage opportunity.
Streak
Number of correct predictions in a row. Longer streaks indicate consistent skill.
Unrealized P&L
Profit or loss on positions you still hold, based on current market prices. Not locked in until you sell.
Volume
Total amount of money traded over a period. Higher volume usually means more market interest.
Whale
A trader who makes large bets (typically $1,000+). Their moves can signal where 'smart money' is going.
Whale Activity
Significant trades from high-volume traders detected on this market.
Whale Volume
Total dollar volume from whale-level traders only, excluding smaller trades.