Mr Thimble

About Mr Thimble

The investment banking and capital markets firm Jefferies said in a September report that sports had become prediction markets’ “most important liquidity driver”, with combo and parlay-style contracts accounting for an increasing share of activity. But the analysts cautioned that prediction markets are scale businesses with relatively low revenue yields, leaving their economics dependent on sustained liquidity, engagement and trading activity.

James Monk, founder of sports data and streaming provider Catalist Sports, has witnessed that dependence directly. Catalist supplies ITF tennis data to Kalshi and Polymarket and has an exclusive US sports-streaming agreement with Kalshi.

The company must also provide data to the firms making markets on those events.

What is Mr Thimble?

Members advocated for stronger powers to be given to Kansspelautoriteit (KSA), the regulator of gambling in the Netherlands, with tougher action taken against payment providers, social media sites and affiliates that facilitate illegal gambling.

Van Bruggen revealed the cabinet was in the process of developing legislation to introduce DNS blocking for illegal sites, with a consultation due for early 2027.

Members flagged the growing issue of illegal gambling sites’ advertising appearing across social media, an issue the sector in Netherlands has sought to tackle directly through legal action against Meta.

How to play Mr Thimble

“You shouldn’t necessarily need 100 people and millions of euros of infrastructure to have a great idea and turn it into a successful slot,” Curwen says.

Lower barriers to entry could significantly widen the pool of potential game creators. Curwen sees opportunities not only for established and emerging studios, but for operators, suppliers, entrepreneurs and potentially entirely new entrants.

“The big change is that technology can increasingly provide the infrastructure,” he says. “The creator provides the idea. And I think that will make the industry much more interesting.”