Double Rainbow

How to play Double Rainbow

While sports event contracts are currently the tentpole category for the prediction market industry, data indicate bettors and traders are embracing other categories.

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.  

How to play Double Rainbow

Although it will remain on the FTSE 250, Entain’s relegation will see it removed from the FTSE 100 on 21 September.

This followed a period of restrategising for the operator, after rebranding from GVC Holdings and committing to having 100% of its revenues come from regulated markets.

But its share price has taken a tumble over the last year, dropping up to 37% since September 2025. Its market cap currently sits at £3.39 billion.

What is Double Rainbow?

The offences relate to special betting markets that let customers wager on the exact date of the general election.

The then-prime minister, Rishi Sunak, announced 4 July 2024 as the election date on 22 May 2024. However, internal planning for that date had already begun at 10 Downing Street and Conservative Campaign Headquarters before the announcement.

Anthony Lee’s senior campaigning role gave him access to confidential discussions about the election timing. Rather than keeping that information confidential, he placed bets and passed it to his wife. She then used the information to place her own bets.