Prediction markets generated over $63 billion in volume in 2025 and show no signs of slowing down. Whether you're brand new or looking to get serious, this guide covers how contracts work, where to trade, the principles that separate profitable traders from the 80% who lose money, and the tools that give you an edge across platforms.

Academic research has documented over $40 million in prediction market arbitrage profits in a single year. Cross-platform price discrepancies between Polymarket and Kalshi are real, persistent, and exploitable — but finding them manually doesn't scale. Here's how arbitrage works, why spreads exist, and how to scan for opportunities systematically.

Active prediction market traders are stuck juggling tabs, missing moves, and manually comparing prices across Polymarket and Kalshi. A dedicated terminal changes everything. Here's what to look for—and how skreenr delivers real-time movers, cross-platform comparison, arbitrage scanning, and precision alerts built for serious traders.

Polymarket and Kalshi together account for 79% of prediction market volume — but they're built for different traders. Here's how fees, regulation, liquidity, and market coverage compare in 2026, and why the smartest traders use both platforms through a single terminal.