About this app
What is Shah Mat?
Kalshi enforced penalties under multiple exchange rules designed to mirror federal market regulations. These include prohibitions on trading when a participant can influence the outcome of an event, trading on material non-public information and engaging in manipulative or fraudulent practices.
The sanctions, effective from 28 August 2026 , bar Santos from any direct or indirect trading access on Kalshi.
Earlier this year, fellow prediction market platform Polymarket also ended its paid relationship with Santos amid a Department of Justice investigation over whether he had placed a wager on his appearance at the same State of Union address.
What is Shah Mat?
“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.”
The institutional layer is largely invisible to customers presented with a P2P proposition. Retail users may technically trade against one another, but the depth required by a mass-market product cannot be supplied by occasional customers alone. Professional firms must be prepared to quote continuously and commit substantial capital.
Marantelli says the London-based White Swan is a significant market maker on several secondary exchanges, accounting for as much as 40% of activity on some platforms. Its particular focus is the RFQ, parlay market.
About Shah Mat
The huge structure, measuring nearly 140 feet long and 20 feet tall, was installed Friday, September 18, as part of the second expansion of Station Casinos’ Durango property.
Suffolk Construction, the project’s general contractor, used a crane weighing roughly 650,000 pounds for the lift, with a second crane assisting with the operation.
Durango opened in December 2023 following an impressive $780 million development. The property completed its first $120 million expansion in December 2025, and work on the latest project began in January 2026.
