NBA star “Giannis Antetokounmpo” announced that he has joined the second-largest prediction market platform in the United States, Kalshi, as a shareholder, becoming the first active NBA player to invest in a prediction market. However, this investment has sparked fierce backlash from fans.
(Background recap: Polymarket team exposed Kalshi’s “API data flooding,” pushing the prediction market into a billion-dollar battle)
(Additional context: The two giants of prediction markets, Kalshi and Polymarket, “not playing by the rules”: opening grocery stores offline just because of anxiety?)
Table of Contents
- Fans criticize: Investing in prediction markets is a conflict of interest
- Review: NBA player Jontay Porter banned for life over gambling scandal
- Kalshi faces 19 federal lawsuits and Massachusetts ban
The Milwaukee Bucks’ star player Giannis Antetokounmpo announced on social media on February 6 that he has joined the prediction market platform Kalshi as a shareholder and will collaborate with the company on live events and marketing.
Giannis wrote in a tweet: “Everyone’s online. The internet is full of opinions, and I decided it’s time to speak my mind. Today, I joined Kalshi as a shareholder. We all on Kalshi now.”
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This 31-year-old Greek star is a two-time NBA regular season MVP, one-time champion and Finals MVP, and one of the most influential players in the league. Besides basketball, he is also a shareholder of MLB’s Milwaukee Brewers and MLS’s Nashville Soccer Club, demonstrating his broad involvement in sports investments.
Fans criticize: Investing in prediction markets is a conflict of interest
This investment announcement immediately triggered strong reactions from fans and sports analysts. According to Sports Illustrated, NBA fans are angry mainly because of the very sensitive timing. Giannis is currently at the center of trade rumors during the NBA Trade Deadline, and there are contracts on Kalshi’s platform trading “Will Giannis be traded?”
Critics point out that a player involved in trade rumors holding shares in a prediction market creates a huge conflict of interest. Although Kalshi stated that Giannis will be prohibited from trading in NBA-related markets and cited strict platform terms banning insider trading and market manipulation, these measures have not fully alleviated public concern.
Review: NBA player Jontay Porter banned for life over gambling scandal
It’s not news when players cheat; in April 2024, former Toronto Raptors player Jontay Porter was banned for life by the NBA for leaking confidential information to sports bettors and deliberately limiting his playing time in certain games to influence betting outcomes. This incident continues to keep the league and fans highly vigilant about the intersection of players and the gambling industry.
The NBA itself has also taken a cautious stance on prediction markets. The league previously pressured the U.S. Commodity Futures Trading Commission (CFTC) to adopt regulatory frameworks similar to state sports betting markets to protect the integrity of the game.
Kalshi faces 19 federal lawsuits and Massachusetts ban
The timing of Giannis’s investment coincides with Kalshi’s own serious legal challenges. The platform is currently facing 19 federal lawsuits, mainly concerning whether its sports betting-related contracts comply with regulations.
Additionally, on February 6, the same day Giannis announced his investment, a Massachusetts court ordered Kalshi to cease its sports betting operations in the state. The gambling regulator ordered Kalshi to stop offering sports-related markets, but the company refused to cooperate and has achieved partial victories in court.
More controversially, a recent equity research analyst found that Kalshi users’ losses are even faster than those on traditional sports betting platforms like FanDuel and DraftKings. Kalshi’s PR head initially responded that the study was “extortion,” then retracted that statement, insisting that internal data contradicts the analysis. The ongoing “prediction market vs. gambling industry” battle continues to escalate.
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