You make money on Polymarket only by buying shares below the real chance of an outcome (or selling above it) more often than you are wrong, by enough to cover the spread and fees; it is a zero-sum market before fees, so every dollar won is a dollar another trader lost. Many traders lose money, and a small number of wallets take most of the profit. Nimb is built to help you read a market before you decide; it cannot make a trade profitable, and nothing here is financial advice.
How does a trade make or lose money?
Take a politics market with Yes at 41%. Through Nimb, $100 buys about 237.7 Yes shares once Polymarket's taker fee (0.04 × p × (1 − p) per share) and Nimb's 0.33% builder fee are folded in. If Yes happens you receive about $237.70, a profit of $137.70; if not, you lose $100. The trade only pays over time if the real chance is above the break-even, about 42.1% here, not 41%.
| Your estimate of the real chance | Expected value of $100 | Reading |
|---|---|---|
| 35% | −$17 | Overpriced for you; Yes is a losing trade on average |
| 42.1% | $0 | Break-even after costs |
| 50% | +$19 | Underpriced, if your 50% is right |
Expected value = chance × payout − stake: 0.50 × $237.70 − $100 = $18.85. The whole question is whether your estimate is better than the market's. Fees and all-in pricing · break-even probability.
Where does profit on prediction markets come from?
- Information. Knowing or reading something the price does not yet reflect. Nimb calls this alpha; most apparent edge turns out to be noise or is eaten by fees.
- Speed. Reacting to public news first. Professional traders and bots compete hard here.
- Providing liquidity. Market makers earn the spread and Polymarket's maker rebates and liquidity rewards, and carry inventory risk.
- Structure. Inconsistent prices between related markets; see Polymarket arbitrage. Rare, small and quickly closed.
- Biases. Research finds long shots tend to be overpriced in many betting and prediction markets; the effect is small and not reliable in any one market. Long-shot bias.
Do most Polymarket traders lose money?
Before fees, total winnings equal total losses; after fees and spreads, traders as a group lose. Profits are concentrated: Polymarket's own leaderboard shows a few wallets with millions in monthly profit, which means many others on the other side of their trades. We have not found an independent, audited figure for the share of profitable Polymarket wallets; treat any precise number you see quoted with care.
How much can you make on Polymarket?
There is no typical figure. The maximum on one share is $1 minus what you paid; the maximum loss is what you paid. A share bought at 90% returns 11% if right and loses 100% if wrong: high-probability trades are not safe trades. Nimb's ticket states the payout, the multiple and the break-even before you sign. The order ticket.
A sensible way to approach it
- Decide what you can afford to lose entirely, and never add to it to win losses back.
- Read the market first: chance, move, money, book, holders, rules. How to read a market.
- Write down your own estimate before you look at the price, and compare later. That is how you learn whether you have any edge.
- Prefer deep markets with narrow spreads, and small sizes. Position sizing is the main protection.
- Read the risks and check you are allowed to trade where you live.
Frequently asked questions
Can you get rich on Polymarket?
A few traders have made large profits; many lose. It is not a reliable income, and Nimb does not recommend trading to make a living.
Is buying at 95% free money?
No. You risk $95 to make about $5; one wrong outcome in twenty wipes out the gains, and fees and rule disputes add risk.
Can you make money on Polymarket without trading?
Providing liquidity can earn Polymarket's rewards and rebates, with the risk of holding positions. Polymarket also runs a referral programme.
Last reviewed 8 November 2026 · Data from Polymarket · Not financial advice · Nimb is not affiliated with Polymarket.