Traders slashed odds that the Supreme Court will uphold President Donald Trump's aggressive tariffs after justices on Wednesday signaled doubts about the legality of the administration's sweeping trade powers.

On Kalshi, contracts tied to whether the court would rule in favor of Trump's tariffs slipped to around 30% from nearly 50% before Wednesday's hearing. Zoom In Icon Arrows pointing outwards

A similar contract on platform Polymarket dropped to about 30% from more than 40% earlier in the week, reflecting traders' growing belief that the justices may strike down the policy. Zoom In Icon Arrows pointing outwards

The moves came after several conservative justices joined their liberal colleagues in expressing unease about the broad authority Trump claimed under the International E

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