Now that Predictions powered by Polymarket US lives inside the Betr app, you can place limit orders as well as market orders, and limit orders are a good tool to understand.
The basics
A limit order sits and waits. Instead of trading at whatever the current price happens to be, you set the price you're willing to accept, and the order only fills at that price or better.
Say there's a market on whether Team A will win its game against Team B, and the "Yes" contract is trading at 73¢, but you'd only pay up to 72¢. You can place a limit order at 72¢ and let it sit until a seller is willing to match that price.*
Your order doesn't need to fill in one shot, either. It can fill gradually, in pieces, as different traders take the other side over time.
*The example above is for illustrative purposes only and does not reflect an actual market or outcome.
Keeping track of your orders
Any order you've placed but hasn't filled yet shows up right under the order book on that market's page. Trading across several markets at once? The Portfolio page pulls all your open orders into one place so you're not hunting through individual markets to find them.
Sports markets work a little differently. When you place a limit order on a game that hasn't started, you can choose to have the order expire at the start of the game. If you don't choose that option, your order can stay open after the game starts and may fill at a price that no longer reflects what is happening in the game. Since start times can move around, it's smart to keep an eye on your open orders.
Cancelling an order
Changed your mind? Find the order below the order book on the market page and hit cancel. As with monitoring, the Portfolio page is the fastest way to manage cancellations if you've got orders spread across multiple markets. Only the unfilled part of an order can be canceled.
That's the core of it.
Still have questions? Reach out through support in the Betr app and we'll help you get squared away.
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Predictions on Betr are event contracts listed on Polymarket US (QCX LLC), a CFTC-designated contract market, and cleared through Polymarket Clearing (QC Clearing LLC). Betr provides the app you use to access Polymarket US. Betr is not the exchange or a broker. Trading event contracts involves risk, and you can lose the full amount you pay for a contract, plus fees. Each contract is governed by its contract terms and the Polymarket US Rulebook (https://polymarketexchange.com/files/legal/latest/rulebook).