55¢ Polymarket Price Explained
- Decimal
- 1.82
- American
- -122
- Fractional
- 9/11
- Implied probability
- 55.00%
- Polymarket
- 55¢
- $100 wins
- 81.82
- American
- -122
- Fractional
- 9/11
- Implied probability
- 55.00%
- Polymarket
- 55¢
- Profit
- 81.82
- Total return
- 181.82
1.818 decimal, -122 American, 55.00% implied probability
Buying at 55¢ means risking 55¢ to win the rest of a dollar. That is a payout ratio of 1.82 (decimal odds) or -122 in American notation, and it implies an implied probability of 55.00% probability before fees.
What a 55¢ share pays
Each share pays $1.00 on a win, so the profit per share is a dollar minus the price. On 100 dollars' worth of shares the return is 181.82, a profit of 81.82.
| Stake | Profit | Total return |
|---|---|---|
| 10 | 8.18 | 18.18 |
| 25 | 20.45 | 45.45 |
| 50 | 40.91 | 90.91 |
| 100 | 81.82 | 181.82 |
| 500 | 409.09 | 909.09 |
| 1,000 | 818.18 | 1,818.18 |
Break-even and long-run results
Because the price is a probability, the break-even rate is the price itself: 55.00%. If your own estimate of the outcome is higher than 55.00%, the share is value; if it is lower, it is not.
| Win rate | Return on stake |
|---|---|
| 50% | -9.1% |
| 55% | 0.0% |
| 60% | 9.1% |
| 65% | 18.2% |
55¢ is a favourite's price on a prediction market, implying 55.00%. Compare it with a sportsbook's price on the same event: if the book offers better than -122 on the same side, or better than the complement on the other side, one of the two venues is mispriced.
Converting 55¢ by hand
Treat the price as a probability: 55¢ is 55.00%. Decimal odds are one divided by that, 1.818, which bookmakers would display as 1.82. American odds follow from the decimal price: a favourite, so −100 divided by (1.818 − 1) gives -122. In fractional terms the closest traditional price is 9/11.
YES, NO and the spread
On a liquid market the YES and NO prices add up to about $1.00; at 55¢ the NO side should be near 45.00%. Anything above $1.00 in total is the spread, the prediction-market equivalent of a bookmaker's vig. Enter both sides in the Polymarket converter to measure it.
Fees and comparison with sportsbooks
Fees, where a market charges them, come off profit and work exactly like exchange commission. At 2% the share is worth 1.802 decimal, at 5% 1.777. A sportsbook offering better than the effective price beats the market.
| Commission | Effective decimal | Effective American | Break-even |
|---|---|---|---|
| 2% | 1.802 | -125 | 55.50% |
| 5% | 1.777 | -129 | 56.27% |
Same price in other formats
Nearby prices
Nearby prices
Frequently asked questions
What does a 55¢ price mean on Polymarket?
A share costs 55¢ and pays $1.00 if the market resolves in its favour, so the price is the market's probability: 55.00%. In sportsbook terms it is 1.82 decimal or -122 American odds.
How do I convert 55¢ to decimal odds?
Divide 1 by the price in dollars: 1 / 55¢ gives 1.818, shown as 1.82.
What is the NO price when YES is 55¢?
On a liquid market the NO side is about $1.00 minus the YES price, so roughly 45.00% in cents. The difference from exactly $1.00 in total is the spread.
Is 55¢ better than the sportsbook price?
Compare after fees. At 55¢ the share is worth 1.82 decimal before fees and 1.802 at a 2% fee. If a sportsbook offers more than that on the same outcome, the sportsbook is the better price.
What do I win per 100 dollars at 55¢?
100 dollars buys 100 / 55¢ shares, which pay 181.82 in total on a win: a profit of 81.82.