What Novig's Sydney Sweeney ad is selling

Novig's first national campaign, Just Sports, launched on September 9, the day the NFL season opened. The coverage since has focused almost entirely on what Sydney Sweeney is (or isn't) wearing in the campaign. The noise is distracting from the substance inside the ad. Novig is selling a sports-only prediction market with an age floor higher than its two largest rivals. 

Sweeney delivers a line co-founder and CEO Jacob Fortinsky first posted on X, which he says she helped shape: "No wars. No death. No politics. Just sports."

Both claims can be checked, and they are what Novig and Sweeney are selling.

The rulebook behind the campaign came first

A month before any of this, Ludlow Exchange, the CFTC-designated contract market that operates as Novig, added a new Chapter 14 covering responsible trading to its rulebook, which the company says it self-certified with the CFTC on August 12. It sets a uniform minimum age of 21, adds customer-set limits and self-exclusion, and imposes requirements on how the exchange markets itself, designs contracts, and monitors accounts. Novig said the rules take effect no earlier than the 10th business day after that filing.

The marketing provisions ban promoting the platform to minors and prohibit advertising that claims trading is risk-free or that targets people in financial difficulty. Nothing in the filing addresses the content of the Sweeney campaign, so the ad does not appear to conflict with the standards Novig set for itself a month earlier.

"Sports only" cuts both ways

"Sports fans deserve a prediction market built specifically for them," Fortinsky said in the campaign announcement. Novig and Fanatics Markets are building sports-only venues. Kalshi and Polymarket run generalist exchanges, where politics, economics, and culture trade alongside sports. Focus is one way to read that difference. Concentration is another.

Non-sports contracts are the older part of the category and have the clearest forecasting and hedging uses, which is why rate decisions and elections trade at all. Breadth also brings in traders across categories and keeps books liquid between seasons. Even so, the generalists are less diversified than they look. Analysis of Kalshi's public API data via Dune Analytics put sports at roughly 85% of its lifetime volume through mid-June, once sports-derived combo contracts are counted. 

Regulation works in the opposite direction. On August 28, the Ninth Circuit ruled in KalshiEx v. Assad that sports event contracts are not swaps under the Commodity Exchange Act, letting Nevada apply its gambling laws to them while sending the separate question of election contracts back to the district court. A federal appeals court drew the line between sports and the rest of the category, and sports came out the exposed side. A generalist exchange that loses on sports loses most of its business but keeps a book. A sports-only exchange has nothing else on the board. 

The age 21-plus gap

The age floor is the substantive difference between Novig and the two largest venues in the category. Kalshi and Polymarket both allow trading from age 18.

Novig's campaign announcement goes further, describing the company as the only prediction market maintaining a 21-plus age requirement. Fanatics Markets also requires every customer to be 21 across the states where it operates, and Novig is unavailable in Arizona, Michigan, and Nevada.

The split exists because prediction markets inherited the conventions of financial exchanges, which have long admitted traders at 18, while most states that legalized sports betting after PASPA fell in 2018 set the minimum at 21. Sports event contracts landed in the gap.

Our guides to the Kalshi age requirement and the Polymarket age requirement set out where each sits.

In August, the Nevada Council on Problem Gambling ended its affiliation with the National Council on Problem Gambling over the national body's partnership with Kalshi, which allows trading at 18. Executive director Trey Delap said the decision was based on the elevated risk of harm to young people.

Fortinsky has said the NCAA and other bodies raised concerns that shaped Novig's rule and that "there's a broader reckoning coming with the younger traders."

Novig launched nationwide last month and was valued at about $500 million after a $75 million Series B led by Pantera Capital in February. Its announcement describes Sweeney as a strategic partner and equity holder.

The criticism with names on it

The ad, which carries an adult content warning on some platforms, drew criticism from female athletes. Australian Olympic swimmer Ariarne Titmus wrote that she could not describe how infuriated she felt watching it. The Female Athlete Project, founded by Olympic gold medallist Chloe Dalton, said the campaign does nothing to represent or support women in sport.

Sweeney has defended the concept, saying it puts the focus entirely on sports and brings the idea to life with "confidence, humor and a playful edge."

Will the attention convert, and will the age gap close?

Will the attention convert? Novig traded $18 million on its first day as a prediction market and remains far smaller than Kalshi, so the campaign's effect on volume will be visible within weeks.

Will the age gap close? If regulators and problem gambling bodies keep pressing on 18-year-old traders, a 21+ floor stops being a marketing point and starts being a baseline.

Trading event contracts on sports carries real risk, and you can lose everything you put in. If it stops being fun, support is available here.

Disclosure: Dimers has commercial relationships with Novig, Kalshi, and Polymarket.