Booster

About Booster

A hearing before the Supreme Court would be the culmination of what has been the biggest sports betting-related development since PASPA. Perhaps no other issue has united gaming stakeholders from various companies, tribes, states and regulators.

Beginning with the US presidential elections in November 2024, when prediction markets catapulted into mainstream culture, their rise has been undeniable. Kalshi and Polymarket have seen their valuations balloon to $40 billion and $21 billion, respectively, and the majority of the top US bookmakers have scrambled to expand into the prediction space in various forms, either by building their own exchanges, acquiring existing ones or engaging in market-making.

Commercial sports betting generated just under $17 billion in nationwide revenue in 2025, which is why Davenport asserts that the “stakes of this case are exceptionally high”. Kalshi and Polymarket alone posted more than $45 billion in trading volume, which is similar but not identical to betting revenue, in August. That was a 15% decline from July, although that drop is attributed to the conclusion of the Fifa World Cup tournament that month per Yahoo! Finance.

About Booster

One of the main concerns is Bill 560/2025, which is currently making its way through the council. The proposal prohibits advertising by betting companies at events in the city of São Paulo. This applies to events organised by public or private entities, whether for-profit or non-profit.

The bill prohibits signs, banners, or display panels in arenas, gymnasiums, stadiums and other sports event venues. It also bans advertising on public transport, such as the side panel, exterior or the rear window of buses. The bill imposes a fine of BRL50,000 ($10,000) and a ban on hosting events for up to two years.

The proposal does not explicitly prohibit the display of betting brands on team jerseys, but some city councillors want to include this in the bill.

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In March, Polymarket opened The Situation Room, a pop-up “newsbar” in Washington, DC. The bar and lounge’s televisions played various content related to prediction markets, like Bloomberg Terminals, cable news, and live social media feeds that were “dedicated to monitoring the situation.”

A month earlier, Polymarket opened a free grocery store in New York City. The promotion ran Feb. 12-16, with shoppers allowed to gather up to $50 per person in free groceries.   

More recently, Polymarket has paid top dollar for prominent athletes and celebrities to promote its prediction market. The company’s paid partners include LeBron James, Derek Jeter, Eli Manning, Spike Lee, and Craig Robinson.