Event Brief
Nov 30, 2025 at 8:01 PM ET
Polymarket: A New Betting Platform Emerges
By The BriefBrief
Shayne Coplan's Polymarket allows users to bet on various events, now valued at $9 billion.
WHO: Shayne Coplan
WHAT: Launch of Polymarket, a prediction market platform
WHEN: Nov 30, 2025 at 7:00 PM ET
WHERE: Online
WHY: To enable users to bet on various events
How this brief is built: The BriefBrief correlates multiple sources into one evolving event brief, updated as new facts emerge.
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