Learn prediction markets

Short, practical guides with a live market example on every page. Start at the top if you are new.

Updated: 1 November 2026. Educational material, not financial advice. Astra Quant is independent and not the official Polymarket site.

• What is a prediction market?
  What a prediction market is, how Yes/No contracts work, why prices read as probabilities, and how to try one with a live example and demo tokens.
• How prediction market odds work
  How prediction market prices become odds and probabilities, why Yes + No is not exactly 100¢, what spread and liquidity mean, with a live market example.
• Prediction market probability calculator
  Free prediction market calculator: enter a contract price in cents and a stake to get implied probability, number of shares, payout and profit. Live market example included.
• Polymarket alternatives: what to compare
  Looking for a Polymarket alternative? A neutral checklist for comparing prediction market platforms — data, liquidity, rules, access, demo mode — and how Astra Quant works.
• Crypto prediction markets
  How crypto prediction markets work: Bitcoin and Ethereum price-level markets, Up/Down markets, token launches, how to read the odds — with a live crypto market.
• Sports prediction markets
  How sports prediction markets work: match winners, tournament futures, live in-play prices, how they differ from bookmaker odds — with a live sports market.
• How to read a Yes/No market
  A step-by-step guide to reading a Yes/No prediction market: the question, rules, Yes and No prices, probability, spread, liquidity and deadline — on a live example.