KEY POINTS

- March headline CPI rose 3.3% year-over-year, up sharply from 2.4% in February, driven almost entirely by the Iran-linked gasoline spike.

- The 10-year Treasury yield is now pinned near 4.31%, and rate-cut odds for 2026 have collapsed below 30%.

- Next inflation read is April CPI on May 13 — if gasoline has rolled over, the Fed gets its window back.

March headline CPI rose 3.3% from a year earlier, a 90-basis-point jump from the 2.4% February print and the hottest annual reading since mid-2024. The Bureau of Labor Statistics release on April 10 landed exactly as traders feared: an Iran-induced gasoline spike has now made its way into the official data, and the Federal Reserve's path back toward easing just got longer. Core CPI held more orderly near 2.5%, a reminder that this is an energy shock, not a services shock, but for an FOMC that spent all of Q1 insisting inflation was still drifting lower, the optics are difficult.

The Cleveland Fed's nowcast had flagged the move for weeks. Gasoline prices tracked by AAA averaged roughly $4.35 a gallon through the last ten days of March, up nearly 30% from pre-conflict levels in early February. When the Strait of Hormuz blockade peaked, Brent was printing above $105 intraday and WTI was churning through $100. That entire energy complex fed through into transportation costs, airline tickets, and every item that ships on a truck. Food-away-from-home also ticked higher, which is the signal most Fed officials watch for whether an energy impulse is becoming a services impulse.

The Fed's Window Has Narrowed

Rate-cut odds have collapsed. Fed funds futures now imply less than a 30% probability of a single 25-basis-point cut for all of 2026, according to Yahoo Finance's summary of CME data. That is down from better than 80% two-cut odds at the start of the year. The March 17-18 FOMC statement held the funds rate steady at 3.50%-3.75% and language in the minutes, released in early April, showed several participants pushing back against any cut "absent clear progress on inflation." That line now reads like a red line.

The mechanical problem for Jerome Powell is that the March CPI can be explained by an identifiable geopolitical shock that is already reversing. Crude has pulled back from its highs, and gasoline at the pump should start rolling over in the April and May data if the Iran memo holds. In a normal cycle, the Fed would look through that. But this is not a normal cycle. The committee spent 2024 and 2025 being lectured by markets for cutting too fast, and its collective priority is now credibility over optimization. That makes a May cut nearly impossible and puts the first real window in September at the earliest, assuming June and July CPI confirm the energy impulse has faded.

The Real Economy Is Not Cooperating Either

What makes the CPI print more awkward is the parallel deterioration in sentiment. The University of Michigan's March consumer sentiment index fell to 53.3, down 5.8% month-over-month and 6.5% year-over-year. That is a level last seen during the 2022 inflation peak. The decline is tied almost entirely to fuel costs and Iran-related uncertainty, and the component data show inflation expectations creeping higher again. One-year expected inflation is now at 4.9%, the highest reading since 2023.

Retail sales for March were originally due this week but have been pushed to April 21 by the Census Bureau due to processing delays tied to weather disruptions. High-frequency data from Fiserv and Johnson Redbook suggests the spending side is holding up better than sentiment, with year-over-year growth tracking between 6% and 7%, but that is nominal growth. Net of the gasoline spike, real retail is essentially flat, which is not the picture the administration or the Fed wants going into the summer.

The Trade Setup

For fixed income, the 10-year Treasury yield is now pinned near 4.31%, roughly where it has traded since the March CPI print. The curve has stopped steepening. The two-year-to-ten-year spread is down to 25 basis points, and any further backup in long rates into next week's 20-year auction could force a re-pricing of duration across the board.

For equities, the implication is more nuanced. Earnings have been strong enough to offset the rates headwind so far, but the relative performance of the Russell 2000 versus the S&P 500 tells you where the pressure is. Small caps, which are more rate-sensitive and domestically exposed, have lagged the S&P by more than 400 basis points in April alone. That gap closes only if rates come down, which requires inflation to come down, which requires the April CPI print on May 13 to confirm the energy impulse has peaked. That is the date circled on every macro desk right now. Anything softer than 3.0% headline puts a September cut back on the table. Anything at 3.2% or above, and the tape has a real problem, rally or not.

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