The Terminal
for Prediction Markets.
ArbEx automatically matches related markets across major prediction platforms, showing cross-venue liquidity, synthetic legs, and real-time arbitrage opportunities all in one terminal.
Core Terminal Workflows
A clean, institutional interface for market matching, execution planning, and always-on monitoring.
Matched Markets
ArbEx automatically identifies and links equivalent contracts across venues into unified ArbEx tickers, so you can compare pricing, spreads, and synthetic legs without manual mapping.
Smart Order Tickets & Calculators
Build cross venue trades using live pricing. Choose buy and sell legs across markets, preview synthetic positions, and model ROI, payout, and execution edge, all updating in real time.
Arbitrage Calculator
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Venue Summary
Side: YES| Venue | Y.Bid | Y.Ask | N.Bid | N.Ask |
|---|---|---|---|---|
KalshiKalshi | 0.410 | 0.429 | 0.571 | 0.590 |
PolyPolymarket | 0.401 | 0.419 | 0.581 | 0.599 |
FcstExForecastEx | 0.394 | 0.412 | 0.588 | 0.606 |
Trade Structure
Defaults to best arbPayout Breakdown
Intelligent Watchlists & Alerts
Add any ArbEx ticker to your watchlist and receive text or email alerts for price movements or spread changes, whether within a single venue or across multiple exchanges.
Live cross-venue quotes for your pinned ArbEx tickers.
| Ticker | Alert | Venue | Last | Y.Bid | Y.Ask |
|---|---|---|---|---|---|
| PRES2028JVAN | Kalshi | 0.42 | 0.41 | 0.42 | |
| PRES2028JVAN | Polymarket | 0.400 | 0.392 | 0.408 | |
| PRES2028JVAN | ForecastEx | 0.406 | 0.397 | 0.415 | |
| PRES2028GNEW | Kalshi | 0.302 | 0.294 | 0.309 | |
| PRES2028GNEW | Polymarket | 0.347 | 0.338 | 0.357 | |
| PRES2028GNEW | ForecastEx | 0.318 | 0.311 | 0.325 | |
| LLMTOP2025… | Kalshi | 0.847 | 0.839 | 0.855 | |
| LLMTOP2025… | Polymarket | 0.875 | 0.870 | 0.881 | |
| LLMTOP2025… | Kalshi | 0.206 | 0.197 | 0.215 | |
| LLMTOP2025… | Polymarket | 0.244 | 0.239 | 0.249 |
Spread Charts & History
Track relative value over time with spread charts built for fast context. Compare venue dislocations, monitor trend persistence, and spot reversion opportunities quickly.
Institutional-Grade Infrastructure for Prediction Markets.
ArbEx introduces the missing infrastructure prediction markets have lacked: unified liquidity views, synthetic contracts, and professional RV trading modules. Built for active traders who need real pricing, real structure, and real workflows.
Cross-Venue Order Book
ArbEx merges live bids and asks from multiple markets into a unified depth-of-book display, letting you see where liquidity is concentrated and how spreads evolve across platforms in real time.
Level 2 · Cross-Venue
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