Trading
Predictions
Trade on the outcome of real-world events through Polymarket.
How prediction markets work
Each market asks a question with a clear resolution rule, such as "Will X happen by date Y?". You buy shares in an outcome. Every share of the winning outcome pays $1.00 when the market resolves; shares of losing outcomes pay nothing.
The price of a share, from 1¢ to 99¢, is the market's implied probability. Buying "Yes" at 35¢ means the market prices the event at about 35%. If you are right, each share you bought for 35¢ pays $1.00.
Zipr connects directly to Polymarket's order book. Orders are matched and settled by Polymarket on Polygon, and markets resolve according to Polymarket's rules and resolution sources. Zipr does not create, operate or resolve markets.
Requirements
- An EVM wallet connected to Polygon. Zipr offers to switch networks for you.
- USDC.e on Polygon to buy shares, plus a little POL for network fees on approvals.
- When your approved amount doesn't cover a buy, Zipr asks you to approve exactly that amount, never an unlimited allowance. Before your first sale, it asks you to enable selling once. The order itself is a signature and costs no network fee.
Finding markets
- Browse by category and sort by trending, total volume, newest, ending soon or liquidity.
- Search by keyword, such as an election, an asset or a central bank decision.
- Biggest movers highlights the markets whose odds changed the most in the last 24 hours.
The market page
Events with several outcomes, such as "Who will win?", list every outcome with its chance and volume. Select an outcome to see its probability chart and trade it.
| Tab | What it shows |
|---|---|
| Order book | Live bids and asks for the selected outcome. Click a price to use it as your limit. |
| Trades | The latest trades on the market. |
| Top holders | The largest positions on each side. |
| Rules | The exact resolution criteria and resolution source. Read these before you trade. |
Buying and selling
- 1Choose Buy or Sell, then the outcome.
- 2Choose Market to trade now against the order book, or Limit to set your own price in cents.
- 3Enter an amount in USDC to buy, or a number of shares to sell. The panel shows your average price, shares and potential payout.
- 4Approve if prompted, then sign the order in your wallet.
Market orders
A market order walks the live order book and is sent with the worst price it would touch as its limit, so you never pay more than the price shown. If the book isn't deep enough for the full size, the rest stays open as a limit order.
Minimums
Each market has a minimum order size in shares, shown in the panel when your order is too small.
Positions & payouts
My positions lists every open position with its value and unrealized PnL. You can sell shares at any time before resolution. After a market resolves, select Redeem next to a winning position to receive $1.00 in USDC.e for each winning share. On multi-outcome markets, the first redemption also asks for a one-time permission.