Trump says Iran war nearly over, S&P 500 futures soar on reduced risk

Trump stated the Iran war is “very close to over,” and the Polymarket contract for the S&P 500 opening higher on April 15 now sits at 99.9% YES, up from 52% twenty-four hours ago.

The S&P 500 sub-market jumped from 52% to near certainty as traders priced in reduced geopolitical risk. The move happened quickly, with the contract reaching 99.9% within a single day.

Total volume on the contract is $107,583 in USDC. The largest single price move was a 22-point drop at 12:02 PM, a sign that volatility persisted even as the overall trend was sharply upward. That volume is meaningful but thin enough that new developments could still move the price.

Trump’s statement lacked specifics on how tensions would actually de-escalate. Traders are clearly betting on a positive outcome, but without concrete details, the signal is ambiguous. At 22¢, a YES share pays $1 if the S&P 500 opens higher, a 4.5x return. That bet requires believing the de-escalation narrative holds before markets open.

Watch for follow-up statements from Trump and any intermediary actions, such as Oman or Qatar entering peace talks. Those would be stronger directional signals than rhetoric alone.

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