Trump Jr. Is Now Invested in Both Sides of the Prediction Market Wars
Donald Trump Jr. now has a financial stake in both sides of prediction markets’ biggest rivalry.
At the same time, the federal government is suing a dozen states to protect the industry in which Trump Jr. has invested. 1789 Capital, Trump Jr.’s venture fund, is leading a $1 billion funding round in Polymarket at a $21 billion valuation, up from roughly $15 billion before this raise.
The fund is putting in about $300 million of the new money, on top of the roughly $200 million it already held, bringing 1789’s combined stake to around $500 million. Polymarket was valued near $9 billion as recently as mid-2025, so this is more than a doubling in a little over a year.
Trump Jr. is on the Payroll of PMs Top Two Competitors
Here’s what makes this more than a funding story. Trump Jr. isn’t a first-time Polymarket backer discovering the sector. GamingAmerica covered his advisory board appointment and initial investment back in January, and before that, he’d already joined Kalshi as a strategic advisor, Polymarket’s direct competitor, holding Kalshi shares worth over $300,000.
So the arrangement now is this: paid advisor to one prediction market, half-billion-dollar investor and advisor to the other. Two companies racing each other for market share, legal legitimacy, and regulatory goodwill, and the president’s son has skin in both games at once.
Trump Jr.’s response to conflict-of-interest questions has been consistent: he holds “no policy position and no role within the administration whatsoever.” While that may be true, one cannot argue that the federal government hasn’t been aggressively siding with predictive markets’ regulatory position across the nation.
The Government is Fighting His Portfolio’s Court Cases for Him
That defense gets harder to sit with once you look at what the actual administration is doing on Kalshi and Polymarket’s behalf. CFTC Chairman Mike Selig has sued nine states this year, including New York, Connecticut, and Illinois, defending federal preemption for prediction markets, the same legal theory both companies need to win in order to keep operating without a state-by-state gambling license.
The commission has also invoked emergency powers on multiple occasions to keep platforms trading despite adverse court rulings, and it sued Wisconsin directly this spring when the state tried to enforce its own gambling statute against both companies; a federal judge sided with the CFTC in July.
None of that activity is illegal, and nothing ties Selig’s litigation strategy directly to Trump Jr.’s investments. But the optics are what they are: a family member of the president holds a growing financial stake across the entire prediction market sector, at the exact moment a Trump-appointed regulator is suing state governments to protect that sector’s business model.
Whether or not the two things influence each other, they’re impossible to fully separate once you’re writing about them in the same paragraph, which is presumably part of why Trump Jr. keeps issuing the same denial.
The Institutional Money Doesn’t Seem to Care
Notably, none of this friction has slowed capital inflows. Intercontinental Exchange, the parent company of the New York Stock Exchange, has built a stake worth up to $1.64 billion in Polymarket through two separate commitments since October 2025.
Polymarket also now runs a domestic, CFTC-regulated exchange built on infrastructure it picked up through its $112 million acquisition of QCEX last year.
Between ICE’s Wall Street pedigree and 1789 Capital’s White House proximity, Polymarket has assembled about as much institutional and political cover as a company in this space can buy. That’s presumably the point. The more this looks like a legitimate financial exchange with serious backers on both coasts, the harder it becomes for state regulators to keep treating it like an unlicensed sportsbook.
Where Will the Future of Prediction Markets be Decided?
A $21 billion valuation puts Polymarket in rare company for a business that, depending on which court you ask, may or may not be legal in several states.
The money suggests the bet is that Kalshi and Polymarket will ultimately win the federal preemption argument, likely before the Supreme Court, given the Ninth Circuit’s ruling against Kalshi and the growing state-court losses elsewhere.
Trump Jr.’s dual position just means he’s placed that same bet twice, once as an advisor and once as an investor, on both companies at the same time. If the industry wins its legal fight, he profits on both sides of the ledger. If it loses, he’s out a nine-figure sum either way. There isn’t really a version of this where his family’s name and his portfolio point in different directions, and that’s worth remembering the next time the administration’s prediction market policy shows up in a headline that doesn’t mention him at all.
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