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Silver Clears Giannis’s Kalshi Investment Under NBA’s De Minimis Rule

He described prediction markets as equivalent to sportsbooks, prompting closer scrutiny.

Overview

  • Adam Silver said Giannis Antetokounmpo’s stake in Kalshi is well below the 1% threshold allowed by the CBA, so it does not violate league rules.
  • Silver stated the NBA currently views prediction markets essentially the same as traditional sports betting companies.
  • He voiced concern about the scale of wagering on the NBA, noting legal betting in roughly 40 U.S. jurisdictions and about 80 countries worldwide.
  • The NBA engaged industry leaders by hosting Kalshi and Polymarket executives at its All-Star Tech Summit alongside major sportsbook and data firms.
  • The investment drew integrity questions after Kalshi hosted markets on Antetokounmpo’s trade prospects with reported volume above $23 million, and Kalshi said active NBA players are barred from trading NBA-related markets.