Last December, a 24-year-old sports bettor took to Reddit to celebrate turning $10,000 into $40,000 in just three days on Kalshi, the prediction-market platform.

He’d placed some hefty wagers on NFL games, including one involving the Denver Broncos that he cashed out early.

Had he held on, he claimed, his original $10,000 could have ballooned to $60,000.

Other Redditors wanted to know how someone his age could afford to throw around that kind of money.

His explanation? A trust fund worth more than $1 million, inherited after both his parents died.

Despite the mile-high wager, he insisted he knew when to walk away.

“I hug the cashout button like a baby,” he wrote.

His experience is self-reported, but it offers a glimpse into a business that’s attracting enormous sums of money.

And the stakes have gotten so high that the NFL is taking a grievance to the U.S. Supreme Court.

Your Rundown for Friday, October 9, 2026...

The NFL Wants a Federal Referee

On Thursday, the NFL filed a brief backing New Jersey’s legal fight against Kalshi, asking the justices to decide who gets to regulate sports prediction markets.

According to the league’s filing, NFL games accounted for $1.8 billion of the $3.3 billion traded on prediction markets on Sunday, Sept. 13 — the first Sunday of the 2026 season.

At the heart of the dispute is one question: Are these financial trades or sports bets?

New Jersey says sports prediction markets belong under state gambling laws. Kalshi argues its contracts are financial instruments regulated by the federal Commodity Futures Trading Commission (CFTC).

Traditional sportsbooks like DraftKings and FanDuel require state licenses and pay sports betting taxes. Prediction markets like Kalshi sidestep those particular requirements.

New Jersey alone estimates it could collect an additional $17–21 million a year if authorized to tax these operators.

Federal appeals courts have split over whether state gambling laws apply to these markets. The NFL wants the U.S. Supreme Court to settle the dispute; the justices have yet to agree to hear the case.

But America’s biggest sportsbooks have plenty riding on the outcome.

DraftKings (DKNG) shares are down about 43% in 2026. Flutter Entertainment (FLUT), FanDuel’s parent company, has lost 64%.

Rather than surrendering to the likes of Kalshi, DraftKings and FanDuel have jumped into prediction markets themselves.

And Wall Street spots an opportunity.

This week, Bank of America upgraded DraftKings to Buy, with a $27 price target. Its analysts estimated prediction markets could bring DraftKings $400 million in fees in 2027, plus another $200–400 million from market making.

The company’s expansion is already meeting resistance.

On Thursday, Florida’s Seminole Tribe sued DraftKings, arguing that the company is encroaching on its exclusive right to offer online sports betting in the state. DraftKings says its prediction markets comply with federal law.

For all the courtroom drama, there’s no shortage of customers willing to put money on the line.

Especially younger customers, who are beginning to treat gambling as a form of investing.

According to Betterment’s 2026 Retail Investor Survey, 26% of Gen Z investors consider sports betting part of their long-term financial strategy.

Another 52% have diverted money intended for investing into sports wagers during the past year.

For some young Americans, No Gamble, No Future sounds less like a poker slogan than a retirement plan.

Market Rundown for Friday, Oct. 9, 2026

S&P 500 futures are up 0.40% to 7,845.

Oil is down 1% to $90.55 for a barrel of WTI.

Gold is up 1.25% to $4,209.40 per ounce.

And Bitcoin is up 1.70% to $84K.