Where the Edge Is: A Category-by-Category Read
Prediction market categories differ in liquidity, time to resolution and who trades them. Read those differences, and see where the spread eats the result.
An edge in a prediction market is the gap between your own probability and the price someone sells it at. Categories differ in how often those gaps appear and what it costs to take them. Below are the three axes that separate categories, a read on each category along those axes, and the arithmetic that decides whether a gap survives the spread.
What counts as an edge
An edge is not a correct forecast. You can call the outcome and still lose money by paying more than it was worth.
The comparison runs the other way. You name your probability, then look at the price, and trade the difference. Say 70 % and see 55¢, and the gap is 15 points in your favour. Say 70 % and see 80¢, and there is no trade, whatever happens later.
That gives you the working rule: your estimate first, the market's price second. The order matters more than the estimate.
Three axes that separate categories
Liquidity decides how much money fits into your idea and at what average price. The screener carries it as a column, next to volume.
Time to resolution decides how long your money stands in the position. A five minute market and an eight month market turn capital over at different rates with the same win rate.
Who trades it decides what you are arguing against. Where fast algorithms set the price, gaps live for seconds. Where people with opinions trade, gaps last for days.
Those three explain most of what separates one category from another.
Measuring the axes yourself
All three sit in the screener, with no third-party ratings involved.
Liquidity and 24-hour volume are their own columns, and a range filter drops the markets too thin for your size. Time to close filters from 30 minutes to a year. The third axis you measure sideways: open the Liquidity block and watch the spread and how fast the book refills after a trade. A tight spread that comes back in seconds means resting automated orders hold the price.
The Top movers and Closing soon presets get you the same answers faster. The first shows where repricing is happening, the second where the clock is running out.
Categories along the three axes
A summary of what follows. Treat it as a reading guide rather than a measurement, because the mix of participants shifts and the book at the moment of entry is the real evidence.
Category | Resolution | Liquidity | Who you argue with |
|---|---|---|---|
Crypto sessions | minutes | deep while the round runs | automated orders |
Sports | hours and days | builds toward kickoff | fans and specialists |
Politics, geopolitics | months | deep in the large questions | people with opinions, arguing for weeks |
Economy, finance | until the release date | moderate | readers of the same reports |
Esports, long tail | days to months | thin | the few who watch these markets at all |
Crypto sessions
Crypto markets run in short rounds of five and fifteen minutes. The price answers the underlying move within seconds, and seconds are what you have between decision and fill.
Two consequences follow. Turnover is high, and your capital comes back several times an hour. Competition is high for the same reason, because short rounds suit automated trading. Beating an algorithm on speed is not the game here. Working the price is: on a thin book a market order walks down the levels, and entry costs more than the top line suggests.
Sports
Sports markets run on a schedule. Liquidity gathers toward kickoff, and live matches carry a LIVE mark with the score on the event page.
The strength of the category is a known horizon. You know when the market resolves, and your money does not sit for months. The weakness is the number of people who know a given league better than you do. Gaps show up more often in competitions fewer people follow, which is also where the book gets thin.
Politics and geopolitics
These carry the longest horizons. Markets live for months, and resolution depends on the wording of the question as much as on events.
Check two details before entering. First, what exactly counts as the outcome: the date, the office, the source of record. Second, how long your money will stand there. A 10 point gap resolving in six months and the same gap resolving tomorrow are different trades measured per dollar per month.
Economy and finance
These markets hang on a calendar of releases: meetings, reports, index prints. Before the release the price moves on expectations, and after it the market snaps to the outcome.
The convenience is a known date for the resolution. The demand is precision about thresholds. The question is usually written around a specific number, so direction alone does not pay. Hitting the range does.
Esports and the long tail
Esports, culture, weather and the rarer subjects share one property: few participants and a thin book.
Gaps appear here more often than in sports or politics, because few people price these markets carefully. Taking them is harder. Thin depth caps your size, and a wide spread takes part of the result at the entry.
Turnover against size
Two categories with the same win rate produce different results when your money stands in them for different lengths of time.
Short markets return capital several times an hour and cap your size, because a thin book will not take a large order without moving the price. Long markets accept size and hold the money for months, during which the same dollar could have worked dozens of times in short rounds.
The number to watch is profit per dollar per period rather than profit per trade. Analytics shows both halves of that: profit by day, and time in trade split between wins and losses.
Where the spread eats the result
The arithmetic is the same in every category. A 4 cent spread on a 30¢ market is 13 % of your entry price, and you pay it twice if you leave before resolution.
Two consequences follow. A 5 point gap on a market with a 4 cent spread is not a gap. On a liquid market with a 1 cent spread, the same idea still works.
So read the spread before the price rather than after. The screener carries it as a column, and the Liquidity block shows it under the trade panel.
Cheap and expensive contracts
Price changes the payout and the precision it demands from you.
A share at 5¢ returns twenty to one and has to come in more often than once in twenty tries. A two point error in your estimate halves or doubles the result. A share at 95¢ returns about five percent, and one miss erases nineteen good trades.
Neither end is better. They punish different errors: cheap contracts punish optimism, expensive ones punish rare misses.
Before you commit to a category
Ten markets are enough to find out whether your opinion here differs from the price.
Filter the category by liquidity and drop whatever will not hold your usual size. Read the spreads that survive: a median above two cents is a toll you pay at both ends of every trade. Now take ten of those markets and write your own probability for each one before the price is on screen.
Then count the gaps wider than the spread. One or two, and the category is priced past you for now. Five or more, and either you found something or you lean the same way in every market, which a week of settled results will tell apart.
Your next step
Pick one category in the Pulse terminal and sort it by spread. Take the three tightest markets and the three widest, then work out the gap each one needs before a trade makes sense. Those two numbers are the border where your edge starts paying.
