D Day

What is D Day?

Prior to announcing the Yahoo Finance accord last November, Polymarket and one of its rivals unveiled deals with Google Finance.

In January, Polymarket and Dow Jones announced an agreement that paved the way for event contract data to appear on various Dow Jones sites, including The Wall Street Journal. Dow Jones also owns Barron’s, Investor’s Business Daily and MarketWatch, among other media properties.

Polymarket also has marketing deals with Major League Baseball (MLB), Major League Soccer (MLS), the NHL and UFC.

How to play D Day

Commissioners pointed to evidence suggesting the tribe may have already been overcharged compared to other member customers.

The Upper Sioux Community also argued that, as a sovereign tribal nation, it is not subject to Minnesota utility regulations. The commission declined to rule on the sovereignty question, concluding it was unnecessary to resolve that issue to determine that Minnesota Valley could not prevent the casino from generating its own power.

An attorney for Minnesota Valley told commissioners the cooperative plans to appeal the order.

What is D Day?

“People will lose money faster on exchanges for lots of reasons,” Marantelli says. “It inherently increases spend, volatility, lots of things. And you’re playing against a sharper audience than you’re playing against at the DraftKings sportsbook.”

He compares the effect with sportsbook cash-out features, which gave customers more apparent control over their bets but may also have encouraged greater spending. The crucial difference is that an exchange customer can be facing a specialist whose entire business is identifying inaccurately priced contracts.

Kendrick sees a warning in the history of betting exchanges. In their early growth phase, there was sufficient retail liquidity for numerous market makers to profit. As that retail pool weakened, the sharper firms increasingly found themselves trading against one another.