Cash Stack

About Cash Stack

Even before the primetime matchup in Kansas City, it became abundantly clear that the industry would shatter previous marks for weekly activity. The AFC West showdown bolstered the already robust totals. Overall, volume for the week hit a record $15.9 billion, according to Bank of America, up 16% from a week earlier.

The pure-play prediction market-operators, Polymarket and Kalshi, emerged from Week 1 as the clear winners. On one hand, Kalshi’s market share lead narrowed over its competitors, falling to 82% for the week ended 13 September, down from 86% a week earlier.

Still, Kalshi had a nine-fold lead over Polymarket, its next closest rival. Polymarket, meanwhile, led the group with 762,000 app downloads, edging Kalshi, DraftKings and FanDuel in the category. The downloads represented a 13,509% weekly increase and 25% of total category downloads, Polymarket wrote in a statement.

About Cash Stack

“We’re calling on the Supreme Court to resolve this issue and recognise that Congress did not silently make the sports-betting industry immune from state law,” Davenport said in a statement.

New Jersey stakeholders are no stranger to the importance of a Supreme Court review. The state lost every case in the lead-up to the PASPA repeal, except for the one that mattered most in the end, and it could be the same in this matter as Kalshi has prevailed thus far in state court and the Third Circuit. Davenport’s petition cites that fateful PASPA ruling in its introduction.

“Just eight years ago, this court reiterated that ‘each state is free to act on its own’ in regulating sports betting,” the petition says. “But Kalshi has a different view. Kalshi bills itself as ‘the first app for legal sports betting in all 50 states’ and believes it can offer that legal sports betting without following the sports-gambling laws of any of those 50 states.”

What is Cash Stack?

Industry consultant Jari Vähänen, formerly a senior executive at Veikkaus, estimated the entire business could be valued at up to €4.5 billion following the liberalisation of the market.

Veikkaus is adjusting to a partial liberalisation of Finland’s gambling market under the new Gambling Act, which was ratified in January 2026. 

From July 2027, the company will lose exclusivity over betting and iCasino products, which will become licence-based, while retaining exclusive rights for lottery games, scratchcards, slot machines and physical table games.