All trading on our platform operates on a 24/7 basis. You are permitted to hold positions over the weekend without restriction.
The only exceptions to continuous trading availability are unplanned service interruptions and scheduled maintenance periods, which will be communicated where possible.
Individual markets still have their own closing times. Once an event ends, your positions in it resolve automatically — there is no need to sell them. Avoid trading a market between its close and its official resolution, since pricing can be inaccurate during that window and Polymarket charges additional fees for selling instead of waiting for resolution. See Order Types and Slippage.
Note that your loss limit applies continuously, including overnight and over the weekend. This is true of every account type. Your equity can breach the loss limit at any hour, whether or not you are watching the market, and whether you hold an Intraday Turbo or EOD Pro account. The trading style you purchased affects when your loss limit rises, not when it can be breached.