MargusPublic research board
Lines and Status are live for NFL, NBA, MLB, NHL, and soccer. Odds are observed from ingested books only.
Docs
Margus documentation
Product walkthrough, data methodology and guides. How to get value from Margus without placing a bet here.
Get started
Four steps from finding a price to placing the bet at the book.
01Open LinesPick your sport on the Lines board and scan moneyline, spread, and total for the slate.
02Check StatusBefore you trust a price, confirm each sportsbook feed is live on the Status page.
03Confirm on the bookPrices on Margus are observed research quotes. Confirm the number on DraftKings, BetRivers, theScore Bet, Kalshi, or Polymarket before you bet or trade.
04Research onlyMargus never takes bets or moves money. You always place wagers directly with the book.
How the data works
Where the numbers come from, how the best price is picked, and whether each feed is live.
Learn the basics
Plain-language guides to odds, probabilities, and line shopping.
How to Read Betting Odds: American, Decimal & FractionalLearn how to read betting odds in American, decimal and fractional formats, with worked NFL and Premier League examples and a quick conversion cheat sheet.Implied Probability: How to Calculate It From OddsWhat implied probability is, how to calculate it from American, decimal and fractional odds, how to remove the margin, and how to use it to find value bets.Line Shopping: How to Find the Best Odds Every TimeWhat line shopping is, why comparing odds across sportsbooks and prediction markets matters, worked NFL and Premier League examples, and a simple routine.Prediction Markets vs Sportsbooks: Which Has Better Odds?How prediction markets like Kalshi and Polymarket differ from sportsbooks: pricing, fees, liquidity, limits and regulation, and how to compare their odds.What Is Vig? Juice, Overround & Bookmaker MarginWhat vig, juice and overround mean, how to calculate a bookmaker's margin on two-way and three-way markets, and how to bet into lower-margin prices.
Prediction markets
How Kalshi and Polymarket compare with sportsbooks, and how to read their prices.
OverviewWhat prediction markets are and how Margus shows them.Kalshi Odds vs Sportsbooks: How Kalshi WorksKalshi odds explained: how event contracts are priced, how fees work, where to check availability, and how Kalshi compares with sportsbook odds today.Kalshi vs Polymarket: Fees, Prices and Sports ComparedKalshi vs Polymarket compared for sports: contracts, fees, liquidity, regulation and settlement rules, plus how to check which has the better price today.Polymarket Odds vs Sportsbooks: Polymarket US GuidePolymarket odds explained: how Polymarket US contracts are priced, its published fee formula, availability, and how its prices compare with sportsbooks.
Questions, answered
Does Margus take bets?
No. Margus is a research comparison of stored quotes. Confirm every number on the sportsbook or prediction market before you bet or trade.
Do affiliate links change which price ranks first?
No. Best price uses the more favorable spread or total first, then the better American odds on that number. Affiliate status never changes the ranking.
Are first observed and last seen sportsbook openers?
They are timestamps from Margus storage. They are not a sportsbook opener unless that open was actually captured.
Why does a scheduled game have no prices?
The matchup can stay on the schedule before eligible stored quotes exist. Public HTML still shows kickoff, status, and team links.
What’s new
Workspace navigation
Lines and Status share a header and account menu.