Lead story · 7 min read
7,518 NFL Market Checks—and Not One Kalshi–Polymarket Arbitrage
Vultax Research compared executable prices and order-book depth on Kalshi and Polymarket. Across 7,518 pre-game NFL checks, quotes never crossed—even before fees.
The market in brief
An NFL Game Ended in a Tie. Why a Sportsbook Refunds the Bet While Kalshi Settles at 50 Cents
How a $12 Bet Became $145,683: The Math Behind a 12-Touchdown Parlay
Three $173 Bets Before a Surprise Appointment: What Is Kalshi Reviewing?
When Betting Help Becomes Control of Someone Else's Account
When Betting Help Becomes Control of Someone Else's Account
A PointsBet customer deposited A$7,000 and had A$110,490 a week later. The bookmaker found that a BetStop-registered third party had operated the account and voided every bet.
The Everton Player Did Not Place the Bets Himself. Why Did the FA Still Fine Him?
Martin Sherif said he did not personally place the 61 bets. But the accounts were opened in his name, funded from his bank account and used by other people. We examine the FA decision and the limits of a player's responsibility.
When Hundreds of Small Bets Create a Big Problem for a Sportsbook
One large wager attracts attention immediately. But hundreds of ordinary customers can create even more exposure on a mispriced market within minutes. We examine how betting communities change sportsbook risk management.
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