Prediction market roundup: Top operators snap up celeb deals for unprecedented opening week of NFL football

Each year, the start of the NFL season gives bonus hunters an opportunity to take advantage of generous offers from leading operators as the companies engage in a customer acquisition bonanza.

Given the rise of prediction markets, this week arguably represents the most frenzied campaign since the historic PASPA decision in 2018. Buttressed by massive capital injection from substantial funding rounds, operators have spent handsomely on celebrity endorsements. Over the last week, ads featuring LeBron James, Sydney Sweeney, Marshawn Lynch and Jeremy Piven have showered the airwaves. Even Pete Sampras, who disappeared from the public spotlight for the better part of two decades, resurfaced in a US Open spot for Kalshi.

While Polymarket pulled off a coup with the signings of James, Eli Manning and Derek Jeter, a Novig ad featuring Sweeney arguably received as much fanfare. Sweeney, an Emmy Award-nominated actress known for her role in HBO’s Euphoria series, stars in the spot titled “Just Sports.” As of Friday afternoon, the Novig post on social media platform X received at least 9 million views.

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.

Connecticut drops the hammer

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.

As the NFL season begins, a state in close proximity to the New England Patriots became the latest to attempt to curb the influence of the trading platforms. On 10 September, one day after the Pats’ season-opening loss to the Seattle Seahawks, Connecticut Governor Ned Lamont addressed the growth of the markets during a speech in downtown Hartford. On the same day, the Connecticut Department of Consumer Protection issued cease-and-desist orders to nine unregulated operators, including Polymarket, Robinhood and Underdog Predict.

“Prediction markets have branded themselves as legal and safe, but the reality is they are not adhering to Connecticut’s consumer protection standards,” Lamont wrote in a statement.

While such orders have become customary around the nation this year, Connecticut’s missive took it one step further. The department also issued nearly 30 subpoenas to licensed gaming service providers and a bevy of media outlets. Those issued subpoenas include ones served to PayPal, Sportradar Solutions and Plaid, a payment processing app that holds a gaming licence. Although those companies are not under investigation, the subpoenas appear to be the first against service providers that conduct business with prediction markets in some form.

Other newsworthy items

–In the wake of a consequential ruling by the US Court of Appeals for the Ninth Circuit against Kalshi, two operators are taking separate paths in an effort to overturn the decision. On 28 August, the Ninth Circuit ruled in a 3-0 decision that sports event contracts do not qualify as federally regulated swaps under the Commodity Exchange Act. Earlier this week, Kalshi filed for an en banc re-hearing with the Ninth Circuit, this time before an 11-judge review. Robinhood, meanwhile, filed a petition of certiorari with the Supreme Court in a move to effectively bypass the Ninth Circuit. It is widely believed that a circuit split between the Ninth Circuit and a separate decision by the Third Circuit will prompt the Supreme Court to take up the case.

–Real App, a social sports app built around live play-by-play, named FanDuel as its first prediction market partner. The partnership brings FanDuel’s odds and contextual markets directly into the app’s live sports experience. Fanatics Sports & Casino is adding some upgrades to its Fair Play offering. Among the changes, Fanatics has added first-half injury protection for player props. The option proved to be valuable for fans in Wednesday’s opener when Seattle Seahawks quarterback Sam Darnold left the game after the team’s fifth offensive play.

–According to the American Gaming Association, an estimated $40 billion will be wagered on the NFL via prediction markets this year. Last week, on the first full day of the 2026 college football season, Kalshi reported nearly $250 million in trading activity on college football.