Market price and market-implied probability
Understand the difference between a quoted contract price, an implied probability and a forecast.
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A price describes a market
A bid is a price someone is offering to pay. An ask is a price someone is offering to accept. A last price records a completed transaction. These are different observations and should not be collapsed into one unlabeled number.
The simple price-to-probability calculation
For a binary contract that pays a fixed settlement value when the named outcome occurs and nothing otherwise, divide the quoted price by that settlement value and multiply by 100. This is a price-derived interpretation, not an objective chance or a forecast from PlayPicks.
Fees, bid/ask spreads, risk preferences and limited liquidity constrain that interpretation. If the payoff is not a simple binary settlement, the calculation may not apply.
Thresholds can overlap
A contract about a value exceeding one threshold can resolve positively alongside a contract about exceeding a lower threshold. These conditions are not mutually exclusive. Do not normalize their prices to total 100%.
A worked price-to-probability example
Illustrative calculation: a binary contract priced at 0.42 currency units with a full settlement value of 1 implies 42% under the simple price-to-settlement interpretation: 0.42 ÷ 1 × 100. These are hypothetical inputs, not a current market quote or a PlayPicks forecast.
If the full settlement value were 10, the same numerical price would imply 4.2%. The unit and settlement value are therefore essential. Converting a number to a percentage does not validate the source, establish a fair price or account for transaction costs.
One contract can have several displayed prices
The bid, ask and last transaction describe different parts of market activity. A midpoint is a calculation between bid and ask; it is not evidence that a transaction occurred there. A chart based on last transactions can also remain unchanged while the currently available quotes move.
Before reading a movement, check that both observations use the same contract, side, quote type and settlement unit. Keep the two timestamps visible. Without comparable endpoints, the size of a change is unmeasured.
Questions to ask beside a percentage
A useful percentage needs a clear label. If the underlying quote type or source time is missing, that limits what the figure can tell you.
- Is the figure an observed price, a midpoint, or a price-derived percentage?
- Is it one exclusive outcome or one of several overlapping thresholds?
- What full settlement value and currency does the conversion assume?
- When was it observed, and are fees and available quantity known?
Sources and citation
PlayPicks analysis is original synthesis. Linked provider documents remain the primary source for their own contract terms.