Frequently Asked Questions
Polymarket is the world’s largest prediction market, where you can stay informed and profit from your knowledge by trading on things related to breaking news, politics, sports, elections, crypto, finance, tech, culture, including topics like CASY.
Polymarket currently hosts 328 active markets for CASY that lets you track or trade on predictions like “Ebola case in the US by June 30?”. Whether you are tracking widely debated events or niche outcomes, the platform aggregates real-time odds based on over $9.7M in trading volume, providing a comprehensive view of fan and investor sentiment.
Each polymarket is a yes/no question, like “Internazionali BNL d'Italia: Jannik Sinner vs Casper Ruud”. You buy shares in “yes” or “no” outcomes. Prices reflect crowd-sourced odds and probabilities. For example, if yes is at 30 cents, that’s a 30% chance. Markets resolve based on official results. For multi-outcome events, like “Measles cases in U.S. in 2026?,” you simply trade on the specific outcome you think will win.
As of today, the most active market is “Measles cases in U.S. in 2026?,” where the crowd is currently assigning a 100% chance to ↑1k. These odds update in real-time as new information emerges and users trade, offering a dynamic snapshot of what the market believes will happen compared to traditional bookmaker odds.
It cuts through the noise. Unlike polls or punditry, Polymarket shows you real-time odds on CASY predictions backed by financial conviction that are often faster and more accurate than experts or surveys. You get an unbiased view of what thousands of traders think will actually happen, often more accurate than polls. Plus, you can trade shares and potentially profit if your predictions are spot on.