Hammerstorm

What is Hammerstorm?

Strip away the language of contracts, order books and event trading and Bernard Marantelli has a blunt description of what is happening inside US sports prediction markets. “Kalshi is a sportsbook that’s just not allowed to have an in-house risk team,” says the founder of White Swan Data, one of the specialist firms now making markets on prediction exchanges.

The difference is all about the risk function. A sportsbook employs traders to price bets and manage its exposure. An exchange provides an API through which firms compete to quote prices and supply liquidity.

“Here’s an API. Bernard and 88 other people can market-make all these request-for-quotes (RFQs),” Marantelli says. “Some people might come in and just do esports because they’re esports experts. Others do everything. Some focus on same-game parlays. But it’s a sportsbook.”

What is Hammerstorm?

Taking a page from a number of humourous Nike commercials during the 1990s, along with a farcical spot aired by the NFL during Super Bowl LIII, Berg injected slapstick comedy into the ad in an apparent attempt to cater to sports fans.

Within a common area inside the Polymarket headquarters, Manning skied high to catch a ball from a jugs machine, while he withstood a low tackle from a defender. “Good morning, Eli,” James proclaimed, before the two-time Super Bowl MVP tossed him the football outside an elevator adorned with the Polymarket logo. Seconds later, James exchanged a handshake with Jeter, a Hall of Fame shortstop who won five World Series titles with the New York Yankees. Last month, the Yankees became the first Major League Baseball club to directly partner with Polymarket.

The total cost of the ad has not been divulged by Polymarket, but it is fair to estimate that it fell in the millions given the high expenses of bringing aboard a prominent filmmaker such as Berg. Beyond director fees, Polymarket also had to budget for agency and concept fees, set construction and post-production costs that include visual effects, licensing and sound design. In late-August, Polymarket disclosed that it has sought a $21 billion valuation in a new funding round led by Donald Trump Jr’s venture firm, 1789 Capital.

How to play Hammerstorm

This will enable them to continue legal operations in the Netherlands from 1 October 2026 through to 30 September 2031. 

It is the first time since the market was launched in 2021 that licences have come up for renewal and whomever is on the final list will indicate how many operators have decided not to remain in the market.

The initial 2021 licences are set to expire at the end of September 2026. All licence holders were required to submit applications for the subsequent five-year period, covering 2026 to 2031.