Polymarket Is Taking Bets on HSBC and Lloyds Failing: What UK Regulators Can Do

The prediction market Polymarket has listed contracts on whether major banks including HSBC and Lloyds Banking Group will fail by the end of 2026, drawing around $77,507 in positions and prompting calls for UK regulators to intervene. The existence of the contracts does not indicate that either bank is expected to fail, and the sums involved are negligible beside real financial markets. The concern raised by politicians and academics is structural: UK, US, Canadian and EU residents are banned from the offshore platform, but traders in roughly 150 other countries can hold positions that pay out if a systemically important British bank collapses. The UK's Gambling Commission has made no formal determination on whether prediction markets are gambling.

First, the thing that is not happening

HSBC and Lloyds are not in trouble.

A prediction market listing a contract on an outcome is not a forecast of that outcome. Polymarket also runs markets on football results, the existence of aliens and when a bomb might drop on a city. The listing reflects what the platform thinks people will trade, not what anyone expects to occur.

The total staked across contracts covering several of the world's largest banks is $77,507 around £58,530. That is not a market signal. It is less than the price of a flat deposit, spread across JP Morgan, BNP Paribas, Deutsche Bank, HSBC, Lloyds and others.

Both banks declined to comment. The Treasury did not respond to requests for comment.

So this is not a story about bank stability. It is a story about what these platforms are, who is allowed to use them, and who decides.

The structural problem

Residents of the UK, the US, Canada and the EU are banned from Polymarket's offshore platform.

Residents of roughly 150 other countries are not.

Which means people outside the jurisdictions most exposed to a British banking collapse can take financial positions that pay out if one occurs. They bear none of the consequences and collect on the outcome.

Academics have warned that this creates a serious moral hazard, giving market participants, in their phrasing, "an incentive to engage in corrupt, illegal, or dangerous actions in order to rig the outcome of the contract."

In most prediction markets that concern is theoretical. On a contract about the solvency of a systemically important bank, it is less so. Bank failures are driven substantially by confidence, and confidence can be attacked by coordinated rumour, by a manufactured liquidity event, by anything that persuades enough depositors to move at once. A financial instrument that pays out when that happens is an instrument that rewards making it happen.

Nothing suggests any such activity is occurring in the HSBC or Lloyds markets. The objection is to the design, not to observed behaviour.

It has already happened once, with weather

The reason the moral hazard argument carries weight is that there is a documented precedent, and it involves physical infrastructure.

In April this year, police were notified over suspected tampering with weather sensors at Charles de Gaulle airport sensors used to settle Polymarket weather contracts.

Somebody allegedly interfered with real equipment at a major international airport in order to move the settlement of a prediction market.

If that is what a weather contract can motivate, the question being put to regulators is what a bank solvency contract might motivate. That is the whole argument in one example, and it is why this story is not simply about an eccentric betting market.

Who is calling for action

Bobby Dean, a Liberal Democrat member of the Treasury committee, has raised concerns about the risks posed by the platform.

The criticisms being levelled are specific: that Polymarket has a poor record on preventing insider trading and on stopping bad actors from placing bets, and that the contracts touch institutions whose failure would threaten the stability of entire economies.

Polymarket's record on insider-trading controls is already under scrutiny in state lawsuits across the United States.

The Bank of England said its supervisors engage regularly with companies on a wide range of market developments and emerging risks which is the standard formulation for watching something without committing to act.

The FCA's engagement with international regulators suggests the UK is treating this as a developing market-integrity question rather than simply another form of online gambling.

The regulatory question nobody has answered

This is the part that matters beyond the individual contracts.

Polymarket is registered with the Commodity Futures Trading Commission in the United States, which treats its products as event contracts financial instruments.

Most regulators elsewhere have treated prediction markets as gambling.

Those are not minor differences of classification. They determine which regulator has authority, what consumer protections apply, what reporting is required and what happens when something goes wrong.

Polymarket is actively lobbying to settle the question in its favour. It is reported to be leading a lobbying effort in the UK and Europe to have its products classified as a financial service rather than gambling, seeking to persuade European regulators to adopt the CFTC's approach.

In Britain, nothing has been decided. The Gambling Commission has made no formal determination on the legal status of prediction markets. Its policy team has noted only that it has fielded enquiries on their emergence, and that commercial products meeting the definition of gambling under UK legislation must be licensed and regulated by the Commission.

It has, however, indicated where it would probably land: "If a prediction market operator was to launch here in Great Britain, we do not believe they would be able to classify themselves as non-gambling products."

That is a clear signal and not a ruling, and the distinction matters because Polymarket has not launched in Great Britain. It operates offshore, blocks UK users, and the contracts in question are being traded by people elsewhere.

Why this is a test case

This appears to be the first known instance of a CFTC-registered platform offering event contracts on the solvency of major UK banks.

It tests something that has not been tested: whether national regulators outside the United States will accept CFTC designation as sufficient oversight for contracts that could, in principle, incentivise manipulation of or attacks on systemically important firms.

The UK has no equivalent of the federal preemption framework that governs this in America. Its Financial Conduct Authority could act unilaterally if it judged the markets a threat to financial stability.

Whether it does is now the open question, and a UK enforcement action would add a second jurisdiction to Polymarket's existing legal problems in the US.

What Polymarket says

The platform rejects the idea that the contracts are inherently problematic, arguing that prediction markets provide information.

That argument has a serious version. Prediction markets aggregate dispersed knowledge into a price, and a market price on bank solvency is, in principle, a continuously updated public signal about perceived risk information that traditional markets provide only indirectly through share prices and credit default swaps.

The platform has also said it aims to simplify complex information and make it accessible to a broader audience.

The counter-argument is the one above: that an instrument providing information about a failure also provides a payout for causing one, and that the two cannot be separated by intent.

No regulatory response has been issued and no platform statement on these specific contracts has been reported.

Where it goes

Whether the FCA or the Gambling Commission makes a determination. Both have engaged without ruling. A formal classification would be the most consequential development.

Whether Polymarket's European lobbying succeeds. It is pushing for financial-service status across the UK and EU, and the outcome shapes the entire category rather than one platform.

The US litigation. State lawsuits over insider-trading controls are ongoing, and a petition from New Jersey seeking clarity on the regulatory status of event contracts is due to reach the US Supreme Court.

Whether the contracts grow. At $77,507 this is a curiosity. At a hundred times that, the moral hazard argument stops being academic.