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About Lady Lava
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 Lady Lava?
At the same time, prediction market operators are facing regulatory tussles in the US. State regulators are moving to shut down the firms under gambling laws. The companies say their contracts should be regulated at the federal level as derivatives.
However, the sector has grown substantially despite such disputes. Bernstein predicted in April that annual prediction market volume could reach $1 trillion by 2030. The research estimated volume was around $51 billion in 2025 and could grow to around $240 billion in 2026.
The partnership with Yahoo Finance wraps up as prediction markets push for broader distribution across financial media, sports, and entertainment platforms. For Polymarket, the loss of the Yahoo Finance hub is one distribution channel, but other partnerships remain intact.
How to play Lady Lava
With no jackpot win materializing, the game’s top prize has continued to grow, reaching $332 million ahead of the Wednesday drawing. A hypothetical winner would be able to either claim the annuity option for the full sum or the one-time lump sum option of $141.7 million.
The $1 million win in the UK comes shortly after a lucky player in New York won a similar prize after matching the five white numbers for the Saturday, September 19, drawing. The same drawing also saw 30 players win tier-three prizes. Of these, 23 won $50,000 each, while the remaining 7 won $100,000 each thanks to Power Play.
A week before that, Powerball awarded not one, but two Match 5 prizes. One of these incredible payouts was a $1 million win in Georgia, while the other one was a $2 million windfall in Ohio.
