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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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The leagues, including the National Basketball Association and the National Football League, submitted the memo as Texas Senator Ted Cruz works assiduously to pass a landmark federal framework for college athletics. While the NCAA is not a signatory to Tuesday’s letter, the advisory also urges states to pass mandatory bans for individuals who threaten “amateur athletes” along with coaches, officials and team personnel.

“Threatening the safety of an athlete or their family members over a sports bet crosses a bright ethical and criminal line, and it is entirely unacceptable,” the leagues wrote in the statement.

The equinox, a relatively new phenomenon, occurs when the NFL, NBA, NHL and MLB all hold games on the same day. A fifth league, the MLS, also signed Tuesday’s letter. Although the equinox will transpire this year on 26 October, the MLS will not be in action.

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Throughout the ad, Novig throws shade on its rivals for offering niche markets on events such as the timeframe for when traders believe that Venezuelan President Nicolás Maduro will be removed from office. Unlike operators such as Kalshi and Polymarket, Novig has opted to limit its offerings to purely sports. “No betting on wars, or deaths…or politics,” Sweeney mused.

During the 2025-26 NBA season, Kalshi made waves by granting an equity stake to two-time league MVP Giannis Antetokounmpo. According to the Wall Street Journal, Sweeney’s representatives approached Novig to express interest as a potential investor. Eventually, the company granted her an undisclosed amount in equity. The increased role of celebrity endorsements in the space is a trend that will likely receive closer observation in the coming months.

During the second half of 2026, prediction markets have endured the wrath of a plethora of state governors, most notably Kathy Hochul of New York.