Kalshi traders now price the odds of the US national average gas price exceeding $4 per gallon by the end of July at 88%, according to CNBC’s Wednesday market tracking. That contract sat at 56% just two days ago, meaning a major swing in sentiment happened quickly.
Traders also give a 64% chance that the average crosses $4.10 and less than 5% odds of hitting $4.50. The contract resolves using AAA’s daily national average, which stood at $3.89 on Wednesday, up about three cents from Tuesday. This year’s high was $4.56, set on May 21.
Why the sudden shift
The move followed the end of the US-Iran ceasefire last week and a fresh wave of strikes on Wednesday. US Central Command posted on X that a second round of strikes launched at 3 p.m. ET, targeting what it called “military capabilities Iranian forces have used to attack commercial shipping in the Strait of Hormuz.”
The Strait represents the bottleneck for about a fifth of the world’s oil shipments. Kalshi’s gas contract has followed events in the waterway very closely through 2026. West Texas Intermediate futures for August delivery closed Wednesday at $79.60 per barrel, up 26 cents on the day, marking the third straight session of gains.
Brent’s September contract settled at $84.95, also up 0.3%. Oil fluctuated to a lesser extent than the Kalshi contract since the difference between pump prices and crude prices is about one week. Kalshi traders are banking on that difference to catch up by July 31.
Kalshi’s track record
As Cryptopolitan earlier reported, Kalshi’s contracts have already tracked the oil-and-Iran story since May, when the platform priced a 2026 US recession at roughly 32.5% odds as oil crossed $100 per barrel.
A separate Federal Reserve-affiliated study in early 2026 found Kalshi’s forecasts matched Wall Street and New York Fed survey accuracy across multiple Fed decisions and beat professional forecasters on headline CPI. That track record is what makes Wednesday’s 32-point swing worth reading as a signal rather than noise.
Traders repricing from a 56% coin flip to a near-certainty in 48 hours suggests the crowd sees the Strait disruption as durable enough to push through the two-week window before month-end. On July 9, before Wednesday’s strikes, Kalshi traders gave a 75% chance that gas would still be above $3.50 per gallon on Election Day November 3, and 39% odds it would exceed $3.75.
What happens next
Those Election Day contracts have not moved as sharply in response to this week’s escalation, suggesting the crowd expects the near-term supply shock to peak in July and moderate by fall.
Before the US-Iran war began in late February, US gas averaged below $3 per gallon, per AAA. Wednesday’s $3.89 average is roughly 30% above that baseline. The Kalshi crowd’s 88% odds on $4 gas by month-end means the market has effectively priced the war premium as permanent for at least the next two weeks.
If the Strait of Hormuz remains a live target for US strikes past July 31, the same crowd will likely reprice the Election Day contracts higher as well.
