> ## Documentation Index
> Fetch the complete documentation index at: https://docs.vistadex.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Binary Outcomes

Vistadex supports binary prediction markets: markets with exactly two possible outcomes: YES or NO. One outcome will win and pay \$1 per share; the other will be worth \$0.

## How Binary Markets Work

Every binary market poses a yes-or-no question with specific resolution criteria:

* "Will Candidate X win the election?" → YES or NO
* "Will Bitcoin reach \$100,000 by December 31?" → YES or NO
* "Will Company Y release Product Z in Q1?" → YES or NO

When the market resolves:

* **YES shares** pay \$1.00 each if the market resolves to YES
* **NO shares** pay \$1.00 each if the market resolves to NO

## The Relationship Between YES and NO

YES and NO prices are mutually exclusive. If you hold one YES share and one NO share, you're guaranteed to receive exactly \$1 when the market resolves (one pays \$1, the other pays \$0).

If YES is priced at \$0.40, NO should be approximately \$0.60. Prices may not sum to exactly \$1.00 due to spreads.

## Market Resolution

<Steps>
  <Step title="Event Occurs (or Deadline Passes)">
    The real-world event specified in the market either happens or the deadline for it to happen passes.
  </Step>

  <Step title="Outcome Determined">
    Based on the resolution criteria, the outcome is determined to be YES or NO.
  </Step>

  <Step title="Market Resolves">
    The market officially resolves and winning shares become redeemable.
  </Step>

  <Step title="Redemption Available">
    Holders of winning shares can redeem them for \$1.00 USDC each.
  </Step>
</Steps>

## Edge Case: Non-Binary Payouts

In rare cases, the reference platform resolves a market with a non-binary payout vector, where shares pay out between \$0 and \$1 rather than a strict binary outcome.

In the history of Polymarket, 554 markets have resolved with non-binary payouts. These are mostly ties in sporting events with no designated tie option, such as the [NFL moneyline market between Green Bay and Dallas on September 28, 2025](https://polymarket.com/event/nfl-gb-dal-2025-09-28).

Vistadex supports non-binary payout vectors and will always resolve 1:1 with the reference platform.