Horror House

What is Horror House?

As a lifelong football enthusiast, it comes as little surprise that Lebron James’ transformative move to Polymarket on Labor Day Weekend served as a harbinger for an even broader announcement by the upstart predictions market operator.

Last Saturday, on the same day that Ohio State University made its season debut in college football, James teased a new commercial relationship with Polymarket. James, an ardent Buckeyes’ supporter, posted a brief video on social media platform X, where he announced his partnership with the controversial platform. While college football fans watched Ohio State thrash Miami (Ohio) 56-3, industry stakeholders wondered aloud which athletes would join “King James”.

After all, James indicated in the post that more details would be forthcoming. By Tuesday, the stakeholders received their answer when Polymarket aired a splashy ad that received more than 15.5 million views on James’ X page.

How to play Horror House

Despite the increase in remote GGY, new account registrations fell 3% to 32.4 million. There were 25.7 million active accounts at the end of the final reporting quarter.

Funds held in customer accounts also declined sharply. Operators held £886.6 million ($1.19 billion), down 13.9% from the same point a year earlier.

Retail betting diverged significantly from the wider market, with non-remote betting GGY falling 3.3% to £2.4 billion ($3.2 billion). The number of betting shops dropped for a 12th consecutive reporting period to 5,617 premises—a 3.6% annual decline (down 208 shops from March 2025).

How to play Horror House

Fullstory points out that while 62% of consumers have dabbled in sports event contracts, 42% traded economic or financial derivatives on a prediction market while a comparable percentage transacted in an election or political event contract. More than a quarter traded at least one entertainment or pop culture derivative.

That widening breadth is vital for the industry at a time when some analysts estimate volume could jump to $10 trillion by 2035 – a projection that is largely rooted in other categories surpassing sports for the top spot.  

Nearly a third of respondents told Fullstory that increased event contract breadth could compel them to consistently choose a prediction market over a sportsbook.