Jack Paul 
Traders on the Kalshi prediction market now see an 88% probability that the US national average gas price will exceed $4 per gallon by the end of July, according to CNBC’s market tracking on Wednesday. That is a sharp jump from just 56% two days ago.
The same contract gives a 64% chance that the average will cross $4.10, and less than a 5% chance of hitting $4.50. The contract is resolved 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.
What drove the sudden shift?
The change 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 of Hormuz is a bottleneck for about a fifth of the world’s oil shipments, and Kalshi’s gas contract has closely tracked events in the waterway 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 less than the Kalshi contract, and that makes sense. The difference between pump prices and crude prices is about one week. Kalshi traders are essentially betting that the gap will close by July 31.
Kalshi’s track record adds weight
As Cryptopolitan earlier reported, Kalshi’s contracts have 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.
Election Day contracts hold steady
Those Election Day contracts have not moved as sharply in response to this week’s escalation. That suggests 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.