One of the biggest bettors on Polymarket, an online prediction market, doesn't consider himself a gambler, even though he's wagered more than $400 million on the platform.

"Domer," a name the Polymarket bettor uses online, used to be a professional poker player until he gave it up for prediction markets. He said it is more exciting than poker. He said last year he made nearly $3 million from wagers on Polymarket.

"I don't think of myself as a gambler," Domer said. "I'm taking very, very well-researched views on things… I feel it's much more akin to investing."

What Domer makes wagers on

Customers on Polymarket bet on all kinds of questions: Who will win the election? Who will win the Super Bowl? Will Taylor Swift get married this year? When will there be a ceasefire in Ukraine?

Ther

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