Mark Zuckerberg wants a piece of the prediction market boom. Meta launched a standalone smartphone app called Arena on June 23, letting users bet on politics, sports, entertainment, and global affairs using a video game-style points system instead of actual money.

The app operates independently from Meta’s existing suite of products, including Facebook, Instagram, WhatsApp, and Messenger. And while the initial version avoids real-money wagers entirely, Meta hasn’t ruled out adding financial betting options in the future.

Here’s the thing: Meta commands over 3.5 billion monthly active users across its platforms. Even if a tiny fraction migrates to Arena, that instantly makes it one of the largest prediction markets on the planet by sheer participant count.

Wall Street noticed immediately

Shares of DraftKings and Robinhood both fell after the announcement, a clear signal that investors view Meta’s entry into prediction markets as a genuine competitive threat.