Polymarket
Strategy sold bitcoin in late May, and told the market in June. Here's how Polymarket bettors are fighting over when it counts.
A $79 million market hinges not on whether Michael Saylor's firm sold bitcoin, but on whether a sale disclosed June 1 can count toward a deadline that passed May 31.
Strategy’s bitcoin sale sparks a $14 million betting chaos on Polymarket
The 8-K filing by Strategy Monday disclosed sales for the period May 26 to May 31, but the disclosure was issued on June 1. Polymarket's May 31 contract is sitting at 81% Yes and in review, while bettors argue over whether the onchain transactions or the filing date controls.
Google engineer busted for insider trading on Polymarket
A Google security engineer was arrested for allegedly using the company's internal search data to place winning bets on Polymarket prediction markets. Michele Spagnuolo transferred $3.8 million in USDC and personally cleared about $1.2 million before attempting to conceal the funds through a privacy mixer. CoinDesk's Jennifer Sanasie hosts "CoinDesk Daily."
Google engineer insider-traded search results on Polymarket, Feds allege
The charges mark the second major arrest over insider trading on a prediction market.
Hyperliquid takes on Polymarket with native event markets
Hyperliquid is expanding its HIP-4 outcome contracts into real-world events like inflation data and Fed decisions, putting it in direct competition with Polymarket. The key difference: Hyperliquid handles dispute resolution in-house through its validators, rather than relying on an external oracle like Polymarket's UMA. CoinDesk's Sam Ewen hosts "CoinDesk Daily."
Spain joins growing list of countries shutting out Polymarket and Kalshi
The platforms were blocked for operating without licenses required by Spanish gambling law, citing a lack of safeguards for minors and self-excluded gamblers.
Hyperliquid takes a swing at Polymarket with macro outcome bets
The decentralized exchange’s new HIP-4 product lets traders bet on offchain events like inflation and interest-rate decisions, using validators rather than UMA-style external dispute resolution.
Indonesia blocks Polymarket, calling prediction market online gambling in disguise
Authorities stated that using crypto or blockchain doesn't change platforms that let users wager on uncertain outcomes from being gambling products.
Congress hits Polymarket and Kalshi with a massive insider trading probe
Rep. James Comer is demanding internal records from the prediction market CEOs, warning that government employees could be using classified information to make “huge profits”.
ZachXBT flags $520K Polymarket exploit on Polygon, team says funds are safe
Blockchain investigator ZachXBT has highlighted a suspected security breach involving Polymarket, the world’s largest decentralized prediction market platform.
