Predictbook

Predictbook is a data-intelligence and media platform built around prediction markets like Polymarket and Kalshi. It parses large-scale on-chain transactions across these platforms and surfaces whale alerts, showing wallet size, odds, and timing on individual trades, such as a $161,846 position on a baseball matchup or a $239,772 bet tied to a BTC price target. The site's live feed logs these signals throughout the day, with a running count of how many have appeared, so traders can see when large or unusual positions move through the market rather than finding out after the fact. Beyond the alert feed, Predictbook organizes coverage into sections like Analysis, Finance, Crypto, Sports, Politics, Culture, and Technology, pairing the transaction data with news updates and market commentary. The front page mixes active contract prices from Polymarket and Kalshi, covering everything from geopolitical questions like Strait of Hormuz shipping traffic and US-Iran relations to sports outcomes and Fed rate decisions, giving a quick read on what odds the market is currently