Mark Zuckerberg wants in on prediction markets. Meta's reported plans sent these stocks lower as a result

Meta is reportedly developing a standalone prediction-markets app, internally called “Arena,” after Mark Zuckerberg directed staff to explore a competitor to Polymarket and Kalshi. The report triggered selling in related betting names, with DraftKings and Flutter Entertainment falling on concerns that Meta could expand into prediction contracts and pressure existing sportsbooks and event-market platforms. The article frames the move as part of a broader surge in prediction markets, which have grown rapidly in trading volume but are also drawing scrutiny over insider-style trading and gambling addiction concerns. Meta’s entry is not yet confirmed as a product launch, but the market reaction shows investors are already pricing in potential competitive disruption for sports betting and prediction-market incumbents.