A screen can show a compelling price on one side and almost nothing behind it. The missing quotes are not a blank space; they are part of the information.
A market with no nearby bid or offer behaves differently from one with a deep, two-sided book.
Read the gaps
Note the spread, the nearest quote on each side, and how much size is actually posted. A wide gap can make the midpoint look precise while leaving no practical execution there.
If one side is empty, ask whether the market is waiting for information, approaching a deadline, or simply too small for the size you need.
Test the order against the book
Use a small, defined size to estimate the fill path. Do not infer a full-position price from a single quote at the top of the screen.
Keep unfilled quantity separate from completed exposure. The absence of a counter-order is a constraint, not a free opportunity.
Price the cost of waiting
If you leave a limit order open, decide what information or time limit would make it stale. A quiet book can change suddenly when a source update arrives.
The useful question is not why one side looks cheap. It is what the missing liquidity says about the trade you can actually complete.
Further reading: Prices and order books · Resolution rules · Current fees.
Explore the markets: Open Polymarket (referral link).
A note on risk
Prices can change and positions can lose their full value. Examples are educational, not promises of returns.
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