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The Positions tab lists every open position and gives each one a sell form, so closing a trade never leaves the popup.

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The list

Each row shows the market title, the outcome you are on, the percentage move from your average entry price — green when you are up, red when you are down — the current value of the position and your share count. The list refreshes roughly every 30 seconds. Press a row to expand it.

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Inside a position

Expanding a row reveals three figures:
  • Avg Price — what you paid, in cents per share.
  • Cur Price — what it trades at now.
  • Size — how many shares you hold.
Two badges can appear here as well. Redeemable means the market has resolved and the position is eligible to be cashed out. Mergeable means you hold both sides of the same market, which can be merged back into USDC.
Both are status labels passed through from Polymarket, not buttons. Ballista cannot redeem or merge a position anywhere — not in the extension, the bot or the terminal. Do it on Polymarket itself.

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Selling out

Under those figures is the sell form. It is prefilled to close the whole position: your full share count, and — in limit mode — the current price.
1

Choose Market or Limit

Market sells straight into the book at whatever it is trading at. Limit rests at your price until it fills.
2

Set the size

Edit the share count to sell part of the position instead of all of it.
3

Set a price (limit only)

A number between 0 and 1, where 0.72 is 72¢.
4

Press Sell

The button spells out what it is about to do — Sell 240 shares.
A market sell is done as soon as it fills. A limit sell rests on the book: it appears under Open Orders in the History tab, where you can cancel it. Read Orders for how the two order types behave.
This form only sells. To open a new position, search from the Markets tab or use the on-page panel while you are reading a market on Polymarket.