JPMorgan quietly severed its ties with the prediction market Polymarket last year, a move the bank made citing regulatory concerns. That decision is now drawing fresh attention as the U.S. Department of Justice investigates whether JPMorgan and other major banks improperly closed customer accounts.
Why JPMorgan walked away
The bank's split with Polymarket wasn't announced with a press release. It happened quietly, with JPMorgan telling the platform it no longer wanted to process payments. The reason given, according to people familiar with the matter, was regulatory concerns. Polymarket operates in a gray zone — it lets users bet on everything from election outcomes to weather, and U.S. regulators have long debated whether such platforms function as unlicensed exchanges or gambling operations.
At the time, the bank's decision looked like a cautious move to avoid running afoul of regulators. But it also meant Polymarket had to find another way to move money, a logistical headache for a platform that depends on fast, reliable payment rails.
The DOJ's wider look at account closures
The Justice Department's current probe into major banks — JPMorgan among them — centers on whether they've been closing customer accounts for improper reasons. The investigation is looking at patterns of debanking, where banks drop customers they deem risky, politically inconvenient, or simply unprofitable. In JPMorgan's case, the Polymarket cutoff is now one of the examples that could be examined.
Banks have broad latitude to refuse service, but the DOJ is asking whether that latitude is being used to punish lawful businesses. Prediction markets, which operate legally in many jurisdictions, have complained for years that they get treated like pariahs by the financial system. JPMorgan's decision to cut Polymarket fits that pattern, though the bank has not said publicly why it acted when it did.
A market that's on firmer footing now
The prediction market industry was on shakier ground last year than it is today. Regulatory threats loomed larger, and mainstream payment processors were hesitant to touch platforms like Polymarket. That's changed somewhat. In recent months, Polymarket has expanded its user base and drawn more mainstream attention, even as the legal questions haven't fully resolved.
The timing matters. If JPMorgan had been asked to explain its Polymarket decision back then, it might have pointed to the uncertainty. Now, with the DOJ digging into account closures across the banking sector, that explanation may not be enough. Investigators are likely to ask why a bank would drop a customer over regulatory concerns when those concerns haven't been proven in court.
For now, JPMorgan isn't commenting on the probe, and Polymarket hasn't publicly discussed the account cutoff beyond noting it found alternative payment methods. The DOJ's investigation is ongoing, and it's unclear how many other banks are under scrutiny or what the department will do with what it finds.
The next step will come when the DOJ decides whether to issue subpoenas, request documents, or call executives in for interviews. That could happen in the coming weeks. Until then, the banks under investigation — and the businesses they've cut off — are left waiting.
