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How to Trade on Polymarket (2026) | Market Orders, Limit Orders & Tips

Step-by-step guide to trading on Polymarket. Market orders ($1 min), limit orders (5 share min), selling positions, reading the order book, and pro tips.

10 min read
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Trading on Polymarket means buying and selling shares on the outcomes of real-world events. If you’ve ever used a stock trading app, the interface will feel familiar. If you haven’t — this guide covers everything step by step.

Prerequisites: You need a Polymarket account with funds deposited. If you haven’t done that yet:

Step 1: Find a Market

Browse Polymarket’s homepage or use the search bar to find a market. Markets are organized by category — politics, sports, crypto, finance, economics, culture, weather, and tech.

Each market is a question with defined outcomes. For example:

  • “Nuggets vs Suns” → Two outcomes: DEN (Nuggets win) or PHX (Suns win)
  • “Will the Fed cut rates in June?” → Two outcomes: Yes or No

Click on any market to open the trading page.

Step 2: Understand the Trading Page

When you open a market, you’ll see three key elements:

The Order Book

The order book shows all open buy and sell orders at each price level.

Polymarket order book showing bid and ask depth, prices, shares, and totals

  • Buy orders (bids) — What other traders are willing to pay
  • Sell orders (asks) — What sellers are asking for
  • Spread — The gap between the highest bid and lowest ask. Most sports markets have just a 1 cent spread. The tighter the spread, the more liquid the market.
  • Last price — The most recent trade price

The order book tells you how much liquidity is available. Large numbers at each price level mean you can trade bigger amounts without moving the price.

The Outcome Prices

Each outcome shows a price between $0.01 and $1.00 — this is the market’s estimated probability.

In the screenshot above, DEN is priced at 66¢ (66% implied probability) and PHX at 35¢ (35%). The prices don’t always add up to exactly $1.00 due to the spread.

The Order Submission Box

This is where you place your trades. You can switch between Buy and Sell, and between Market and Limit orders.

Step 3: Place a Market Order

Market orders are the simplest way to trade. They execute immediately at the best available price.

Polymarket market order interface showing Buy/Sell toggle, outcome selector, amount input, and To Win calculation

How to place a market order:

  1. Select Market in the order type dropdown (top right of the order box)
  2. Choose Buy or Sell
  3. Select your outcome — e.g., DEN 66¢ or PHX 35¢
  4. Enter the dollar amount you want to spend — use the quick buttons (+$1, +$5, +$10, +$100) or type a custom amount
  5. Review the “To win” field — this shows your total payout if your outcome wins. Your profit is the payout minus your cost.
  6. Click the Buy button to submit

Example from the screenshot: Buying $5 of DEN at 66¢ → To win $7.58 → Profit if DEN wins: $2.58

Minimum: Market orders must be at least $1.

When to use market orders:

  • Quick, small trades where speed matters more than getting the perfect price
  • Liquid markets with tight spreads (major politics, popular sports)
  • When you’re just starting out and learning the platform

When to be careful: In illiquid markets (small sports events, markets far from resolution), market orders can fill at worse prices because there aren’t enough orders on the book. In these cases, use a limit order instead.

Limit orders give you control over the exact price you pay. They’re better for larger trades and illiquid markets.

Polymarket limit order interface showing price selector, shares input, expiration toggle, and total calculation

How to place a limit order:

  1. Select Limit in the order type dropdown
  2. Choose Buy or Sell
  3. Select your outcome
  4. Set your Limit Price — the maximum price you’re willing to pay (for buys) or the minimum you’ll accept (for sells). Use the +/- buttons to adjust.
  5. Enter the number of Shares — use the quick buttons (-100, -10, +10, +100) or type a number
  6. Optionally Set Expiration — by default, limit orders are good-til-cancelled. You can set them to expire after:
    • 1 minute, 5 minutes, 1 hour, 12 hours, 24 hours
    • End of day
    • Custom date and time
  7. Review Total (cost) and To win (payout)
  8. Click the Buy button to submit

Minimum: Limit orders require at least 5 shares.

Why use limit orders:

  • Better prices — You set the price, so you never pay more than you want
  • Fee rebates — Limit orders that add liquidity (don’t fill immediately) qualify for maker rebates of 20-50% depending on the category
  • Control in illiquid markets — Essential for markets with wide spreads where market orders could fill at bad prices
  • Set and forget — Place your order at your target price and let it fill when the market moves to you

Step 5: Sell a Position

To sell shares you already own, use the same market page.

  1. Navigate to the market where you hold a position
  2. Switch from Buy to Sell in the order box
  3. Choose Market (sell immediately at best price) or Limit (set your minimum sell price)
  4. Enter the amount to sell
  5. Submit the order

You can sell all or part of your position. Partial sells let you take some profit while keeping exposure.

When to sell:

  • Take profits — The price has moved in your favor and you want to lock in gains
  • Cut losses — Your view has changed and you want to exit before losing more
  • React to news — New information changes the probability and you want to reposition
  • Before resolution — You don’t need to wait for the market to resolve. Selling before resolution lets you realize profit without waiting for the event.

Step 6: Monitor Your Portfolio

The portfolio page gives you a complete view of all your positions.

Polymarket portfolio showing total value, available balance, P&L chart, and active positions with profit/loss per position

The portfolio shows:

  • Total portfolio value — Mark-to-market value of all your positions
  • Available to trade — Cash balance not currently in positions
  • Profit/Loss chart — Track your P&L over time (1 day, 1 week, 1 month, or all time)
  • Positions list — Every active position with:
    • Average price you paid → Current price
    • Amount traded
    • Amount to win if the position resolves in your favor
    • Current market value
    • Profit/loss in dollars and percentage

You can also view Open Orders (pending limit orders), History (past trades), and Sponsorships.

Trading Tips from 2 Years of Experience

After trading on Polymarket across politics, sports, and geopolitics for 2 years, here are the lessons that matter most:

Use limit orders for anything meaningful

Market orders are fine for small trades in liquid markets. But for anything over $20, or in any market that isn’t heavily traded, use limit orders. You’ll get better prices and pay lower fees thanks to maker rebates.

Check liquidity before trading

Look at the order book before placing an order. If there are only a few hundred dollars at each price level, a large market order will move the price against you. In thin markets, always use limit orders and be patient.

Don’t chase markets that already moved

When breaking news hits, prices move fast. If a market has already moved 20 cents in response to news, you’ve likely missed the easy money. The remaining move is uncertain. Look for markets that haven’t fully priced in the news yet.

Think in terms of edge, not conviction

A market priced at 70¢ means the crowd thinks there’s a 70% chance. For your trade to be profitable long-term, you need to believe the true probability is meaningfully different from the market price. Ask yourself: “Do I know something the market doesn’t, or am I just following my gut?”

Manage position size

Never put a large percentage of your portfolio in a single market. Diversify across multiple markets and categories. Even high-conviction trades can lose — that’s the nature of probability.

Trade in and out — don’t just hold

The ability to sell positions before resolution is Polymarket’s biggest advantage over traditional betting. If you’re up 50% on a position and the remaining upside is small, take the profit. You can always re-enter if the price moves back.

The most popular markets (US politics, major sports) are efficiently priced because thousands of traders are watching them. Less popular markets — regional elections, niche sports, economic indicators — often have more mispricing and wider spreads, which means more opportunity for informed traders.

What Happens When a Market Resolves?

When the real-world event occurs and the outcome is determined:

  • Winning shares pay out $1.00 each
  • Losing shares become worth $0.00
  • Your portfolio balance updates automatically
  • No action is required on your part

Resolution is handled by Polymarket based on official sources (election results, sports scores, official data releases).

Next Steps

Frequently Asked Questions

What is the minimum trade on Polymarket?
Market orders require a minimum of $1. Limit orders require a minimum of 5 shares. You can start trading with very small amounts.
What is the difference between a market order and a limit order on Polymarket?
A market order executes immediately at the best available price — fast and simple, but you may get a worse price in illiquid markets. A limit order lets you set the exact price you want to pay and only fills when someone matches it — better prices but may not fill immediately.
How do I sell my position on Polymarket?
On the same market page where you bought, switch from 'Buy' to 'Sell' on the order submission box. You can sell all or part of your position using a market or limit order.
What happens when a Polymarket market resolves?
When the event outcome is determined, winning shares pay out $1.00 each and losing shares become worth $0.00. Your portfolio balance is updated automatically — no action needed on your part.
Can I lose more than I invested on Polymarket?
No. The maximum you can lose on any trade is the amount you paid for your shares. There is no leverage, margin, or risk of negative balance on Polymarket.
What is the spread on Polymarket?
The spread is the difference between the best buy price and best sell price. Most sports markets have just a 1 cent spread. The spread varies by market liquidity — popular markets have tighter spreads.
Should I use market orders or limit orders on Polymarket?
Market orders are fine for quick, small trades in liquid markets. Limit orders are better for larger trades or illiquid markets because you control the exact price. Limit orders also qualify for maker fee rebates (20-50% depending on category).
Can I set an expiration on my limit order?
Yes. Limit orders default to good-til-cancelled, but you can set them to expire after 1 minute, 5 minutes, 1 hour, 12 hours, 24 hours, end of day, or a custom date and time.
How do I read the Polymarket order book?
The order book shows all open buy and sell orders at each price level. Green/buy orders are on one side, red/sell orders on the other. The spread is the gap between the highest buy price and lowest sell price. Larger numbers at each price level indicate deeper liquidity.