How Polymarket Election Markets Work: 2026 Midterms Guide
How do Polymarket election markets work? Contracts, candidate vs party pricing, resolution rules, and how to read the 2026 midterm markets trading now.
GhostLeg Sports Betting Blog
Polymarket Election Whales: Who Holds the Midterm Markets
Polymarket election whales are visible on-chain. See who holds the biggest midterm market positions across 65+ races, and how to track the big money live.
Expected Value Betting Formula Explained
Learn the expected value betting formula with a real MLB example. See how GhostLeg uses cross-market signals to identify +EV spots the book misses.
How Accurate Are Election Markets? The Graded Record
How accurate are election prediction markets? We graded thousands of settled Kalshi and Polymarket contracts. See the calibration ladder, band by band.
Kalshi vs Polymarket Election Odds: Same Race, Two Prices
Kalshi and Polymarket price the same 2026 midterm races differently, sometimes by 25 points. See the live gaps, why they exist, and how to read them.
Reverse Line Movement Explained
Reverse line movement is when a betting line moves against the public. Learn what it signals, why it happens, and how GhostLeg tracks it across 7 books.
Polymarket Whale Tracker: Follow the Smart Money in Sports
Track Polymarket whales live: real wallets, graded win rates, ROI, and closing line value. See what the smart money backs on GhostLeg's whale tracker.
USA vs Bosnia & Herzegovina: Round of 32 Odds, Signals & Market Reads
USA vs Bosnia World Cup R32 odds, signal engine breakdown, and a striking 11pp Polymarket draw divergence. Three-market preview for July 1 at 8pm ET.
World Cup 2026 Round of 32: Odds, Signals & Market Reads
World cup round of 32 odds, signals, and prediction market reads for all 15 matches. Find the tightest matchups, biggest divergences, and what our data shows.
Vig in Sports Betting: The Hidden Tax in Every Bet
Vig in sports betting is a silent tax on every wager. See real average hold data from 6 books across NBA, MLB, NHL, EPL, MLS, and UFC, and how to fight back.
What Does SGP Mean in Betting?
What does SGP mean in betting? Same-game parlays explained with real correlation math showing why the payout is worse than the parlay calculator suggests.
What Does Parlay Mean in Betting? (And Why Books Push Them)
What does parlay mean in betting? A clear definition plus the real vig math showing why sportsbooks love parlays more than any other wager. Real MLB prices inside.
Odds vs Probability: The Hidden Sports Betting Distinction
Odds vs probability in sports betting: learn how to convert any moneyline to true implied probability with real Knicks vs Cavaliers data and devig math.
World Cup Odds: How Three-Way Soccer Markets Work
Learn how three-way World Cup odds work vs two-way NBA markets, with real devig math from Spain vs Cape Verde and cross-book overround data across 7 sportsbooks.
2026 FIFA World Cup Betting Guide: Odds, Markets & Signals
The 2026 World Cup betting guide for data-driven bettors. Three-way odds, overround by book, Kalshi and Polymarket signals, and how to read the markets.
Best Prediction Market Tools & Resources (2026)
The best prediction market tools in 2026: Kalshi, Polymarket, Metaculus, Manifold, directories, forecasting communities, and data intelligence platforms. Curated and honest.
Knicks vs Spurs Game 3 Preview: The Signal Stack Picks the Underdog
Knicks host the Spurs at MSG Mon 8:40 PM ET, leading 2-0. Three venues favor NY within 1pp. Our composite and XGBoost layers both lean the underdog Spurs.
Pirates at Braves Sunday: Highest XGBoost Signal on Today's MLB Board
XGBoost edge score of 58 tops today's MLB board for Pirates at Braves. The Braves lead the series 2-0, the market sits at -146, and line movement, Kalshi, and Polymarket all lean Atlanta. Full signal breakdown.
Closing Line Value, Explained
Closing line value is the single best predictor of long-term sports betting profit. Learn what CLV is, how to measure it, and why beating the close matters more than your win-loss record.
Kalshi vs Polymarket: The Battle for Prediction Markets
Kalshi vs Polymarket for sports betting: a full year of graded accuracy, liquidity, and fee data from a platform that integrates both feeds. Updated for Polymarket's US launch.
Spurs at Thunder Game 7: What the Market Sees
Game 7, OKC hosting. Market gives Thunder ~60% but Polymarket sits 1.7pp lower. Both teams have a road win in this series. What the data shows.
Spurs vs Thunder Game 4 Odds: When Three Markets Converge
Sportsbooks, Kalshi traders, and Polymarket all converged within 1pp on Spurs vs Thunder Game 4. A look at what three independent markets agreeing really tells you.
Prediction Markets vs Sports Betting: Same Game, Different Rules
Polymarket nailed the 2024 election. Sports bettors have been doing the same thing for decades. How prediction markets and sportsbooks actually connect.
How Do Sportsbooks Set Odds?
Most bettors think oddsmakers predict winners. They don't. Learn how sportsbooks actually set lines, why odds move, and where the house edge hides.
What is a Parlay Bet?
Learn what a parlay bet is, how parlay odds work, types of parlays, and tips for betting beginners. Your complete guide to understanding parlay bets.