Conditional Prediction Markets: How Nested Forecasts Work
Conditional prediction markets answer the question: "If X happens, what is the probability of Y?" They're a powerful tool for isolating causal relationships, testing policy scenarios, and extracting information that unconditional markets can't provide.
How Conditional Markets Work
A simple conditional market structure:
- Market A: "Will the Fed cut rates in June?" (unconditional)
- Market B: "Will GDP growth exceed 2% in Q3 2026, given that the Fed cuts rates in June?" (conditional on A being YES)
Market B only resolves if Market A resolves YES. If the Fed doesn't cut (A resolves NO), Market B is voided and positions refunded. This structure lets you isolate the causal effect of rate cuts on GDP growth — which an unconditional GDP market can't do.
Why Conditional Markets Are Valuable
- Policy evaluation: "If policy X is enacted, what happens to outcome Y?"
- Causal inference: Separates the effect of an event from confounding variables
- Strategic planning: Businesses can price business scenarios based on conditional probabilities
- Election outcomes: "If Candidate A wins, what happens to the stock market?"
Active Conditional Markets on PolyGram
Common conditional market structures include:
- "Will Bitcoin exceed $100K IF the Fed cuts rates 3+ times in 2026?"
- "Will Trump's approval exceed 45% IF unemployment stays below 4%?"
- "Will the EU pass AI regulation IF the UK does not?"
- Tournament bracket conditionals: "Will [Team A] win the championship IF they beat [Team B] in the semis?"
Trading Conditional Markets
Conditional markets require analyzing two probabilities simultaneously:
- The probability that the conditioning event occurs (Market A)
- The probability of the outcome given that conditioning event (Market B)
Your expected return depends on both. If you believe the conditioning event is likely (high P(A)) and the outcome given that event is also likely (high P(B|A)), a YES position in the conditional market is attractive.
FAQ
- What happens if the conditioning event doesn't occur?
- The conditional market is voided. All positions receive a full refund of their USDC investment, regardless of which side they bet on.
- Are conditional markets more or less liquid than unconditional markets?
- Generally less liquid — the added complexity reduces the number of traders engaging. However, conditional markets on major events still attract meaningful volume.
- Can I create a conditional market on PolyGram?
- Market creation is handled by PolyGram's curation team. Suggest conditional market ideas through the support channel — high-interest topics are prioritized for listing.