TOTAL VOLUME:
$124b
24H VOL:
$84,547,050
24H TRANSACTIONS:
2,121,338,658
OPEN INTEREST:
$1,287,835,486
364,458
Markets across
33,243
events
MATCHED EVENTS:
3,079
PLATFORM COVERAGE:
5
Polymarket:
41%
VS.
Kalshi:
59%
#Education
Analysis, predictions, and breakdowns from across the markets.
Prediction Market Overround: Why the Odds Don't Add Up to 100%
A three-candidate market pricing at 105 cents isn't broken. Here's what that extra 5 cents actually means and why sportsbook vig is a different animal.
Jared Polites · Sep 6
Weather Prediction Markets: How Temperature, Snowfall, and Hurricane Contracts Get Priced
Temperature, snowfall, and hurricane contracts resolve against NOAA and National Weather Service data, not a forecaster's opinion. Here's how the brackets, splits, and pricing actually work.
Jared Polites · Aug 27
How to Spot a Manipulated Prediction Market Before You Trust the Price
Wash trading, thin-book spikes, resolution clustering, and self-dealing are the four patterns that give away a manipulated price. Here's how to check for each one.
Jared Polites · Aug 26
Recurring Prediction Market Contracts: How to Read a Chain, Not a Single Bet
A recurring contract is not one market. It's a series that resets every cycle, and reading only the latest instance means missing the trend entirely.
Jared Polites · Aug 24
What Does Prediction Market Volume Actually Mean?
Volume is the total traded over time. Open interest is what's still at stake right now. Liquidity is what you can trade this instant, and most headlines quietly blur all three into one number.
Jared Polites · Aug 5
How Accurate Are Prediction Markets? What the Resolved-Market Data Shows
Calibration, not who-won, is the real test of prediction market accuracy. Here's what large samples of resolved contracts actually show, and where the record breaks down.
Jared Polites · Jul 26
What Are Prediction Markets? How They Actually Work
Prediction markets price real-world events the way markets price stocks. See how they work, and compare live odds across all 5 major platforms.
Jared Polites · Jul 10
How Long Does It Take for Prediction Markets to Resolve?
Resolution speed depends on governance, not software. Kalshi confirmed a real Fed decision in eight minutes; Polymarket's identical contract took two hours because its dispute window ran uncontested.
Jared Polites · Aug 5