Inflation peaked in May as energy prices fell in June, Kalshi traders think

• Energy prices, which accounted for 60% of the April-to-May CPI increase, have fallen significantly with gasoline dropping from over $4.50/gallon to $3.84 and crude oil prices declining below $70/barrel for the first time since the war began
• Kalshi traders expect June CPI to show a 0.2% month-over-month decline, aligning with Wall Street consensus forecasts, with the official BLS report due July 14
• The May 2026 Consumer Price Index showed annual inflation at 4.2%, with energy price spikes driven by the late February U.S.-Iran war and closure of the Strait of Hormuz

Summary

Key Development: Prediction market traders on Kalshi believe U.S. inflation peaked in May 2026 at 4.2% annually, with only a 28% probability of CPI exceeding this level for the remainder of 2026.

Critical Data Points:

• May 2026 Consumer Price Index showed 4.2% annual inflation rate
• Current national average gasoline price: $3.84 (down from peak of $4.50+)
• Energy prices accounted for 60% of April-to-May price increases
• Next CPI report covering June data due July 14, 2026
• Kalshi traders and Wall Street consensus expect June CPI to decline 0.2% month-over-month

Primary Driver: The inflation outlook has improved significantly due to falling energy prices. Oil and gas costs surged following the U.S.-Iran conflict in late February 2026 and the subsequent closure of the Strait of Hormuz. The partial reopening of this critical waterway has enabled crude oil prices to drop below $70 per barrel for the first time since the conflict began, directly impacting pump prices.

Market Implications: The easing inflation trajectory suggests potential relief for consumers and may influence Federal Reserve monetary policy decisions. Lower energy costs are expected to produce deflationary pressure in June data, reversing the trend from previous months. The prediction market pricing indicates trader confidence that the worst of this inflation cycle has passed, with energy price normalization serving as the key variable. This development could support equity markets and reduce pressure on interest rates if the trend continues through year-end.