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Buying a position means purchasing shares that pay out if a specific outcome occurs. On Vistadex, you can buy YES shares (betting an event will happen) or NO shares (betting it won’t).

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Buying a Position

1

Find a Market

Browse or search for a prediction market you want to trade. Each market has a clear question and resolution criteria.
2

Select Your Side

Choose whether you want to buy YES or NO shares. YES shares pay 1iftheeventhappens;NOsharespay1 if the event happens; NO shares pay 1 if it doesn’t.
3

Enter Amount

Specify how much USDC you want to spend. The interface shows how many shares you’ll receive at the current quoted price.
4

Request Quote

Click to request a quote. Vistadex runs an RFQ auction to find you the best price.
5

Review Quote

Review the quote showing:
  • Number of shares you’ll receive
  • Price per share
  • Total cost including the 0.5% fee
6

Confirm Trade

If the quote looks good, confirm the trade. Your wallet will prompt you to approve the transaction.
7

Transaction Confirms

Once the Solana transaction confirms, the shares appear in your portfolio.

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Understanding Share Prices

Share prices reflect the market’s implied probability of an outcome:
Share PriceImplied Probability
$0.1010% chance
$0.2525% chance
$0.5050% chance
$0.7575% chance
$0.9090% chance
If you buy YES shares at 0.30andtheeventhappens,eachsharepaysout0.30 and the event happens, each share pays out 1.00—a profit of $0.70 per share (before fees).

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Example Trade

Market: “Will Event X happen by December 31?”
  • Current YES price: $0.40
  • You spend: $100 USDC
  • Shares received: ~248 YES shares (after 0.5% fee)
If YES wins: Your 248 shares pay out 248→248 → 148 profitIf NO wins: Your shares are worth 0→0 → 100 loss

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Tips for Buying

If you’re new to prediction markets, start with smaller positions to learn how the system works before committing larger amounts.
Before buying, understand exactly how the market resolves. Ambiguous resolution criteria can lead to unexpected outcomes.
Markets have expiration dates. Make sure you understand the timeline and when resolution will occur.
Before buying YES, check the NO price too. Sometimes one side offers better value than the other due to how shares are priced.

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After You Buy

Your new position appears in your portfolio immediately after the transaction confirms. From there you can:
  • Hold — Wait for market resolution
  • Sell — Exit your position early if you change your mind or want to lock in profit/loss
  • Buy more — Increase your position if your conviction grows