PCE data comes out this Thursday — since the Iran war is over, shouldn't prices come down and allow the Fed to tighten less?
2026-06-22
PCE June 25 — How Much Can the Iran Peace Really Lower Inflation?
Between Expectation and Reality
The intuition is correct. The U.S.-Iran peace MOU (June 15) reopened the Strait of Hormuz, sending WTI down approximately 5% from $80.75 to $76.60. Factoring in energy's weight in the CPI basket, it is indeed a fact that downward pressure is exerted on the May PCE.
The problem is which PCE we're looking at. What the Fed targets is not headline PCE but core PCE (excluding food and energy).
Secondary Effects the Iran Energy Shock Left in Core PCE
Dallas Fed research (2026-04) shows that in a Strait of Hormuz 15% supply disruption scenario, headline PCE rose 0.6pp but core PCE increased only 0.2–0.4pp. The core increase effect was larger in Q2 (April–June), then gradually tapered.
May is precisely in this 'Q2 peak core impact' range. Energy prices have already risen, and the transmission of that impact into shipping costs, manufacturing costs, and service prices has a 1–2 quarter lag. The downward effect of the Strait of Hormuz reopening (June 15) will be reflected in PCE at the earliest in July–August.
In fact, core PCE for April was 3.3% year-over-year, actually up from March's 3.0% (Cleveland Fed Nowcast). The May forecast is in the 2.9–3.2% range (TradingEconomics, 2026-06).
Why Did the Fed Maintain the 3.6% Forecast Even Knowing About the Iran Peace?
Chair Warsh raised the PCE forecast to 3.6% at the FOMC (June 16–17) even in the immediate aftermath of the Iran accord signing. Two reasons:
First, it's uncertain whether the Iran accord will actually be implemented. Follow-up talks were temporarily suspended on June 19. The current market consensus is a 20–30% probability of accord termination within the 60-day implementation deadline.
Second, the labor market overheating indicated by May NFP +172,000 (2x estimate) independently props up services inflation. Even if energy falls, wage inflation keeps core high. Minneapolis Fed research (2026 paper) described this as 'the time limit for pretending to ignore oil shocks' — if the shock persists too long, inflation expectations themselves rise, making rate policy ineffective.
Scenario Branch: Market Path by PCE Result
| PCE Result | Probability | Market Reaction |
|---|---|---|
| Core below 2.8% (Iran peace effect fast) | 20% | 10Y falls to 4.2% range, Nasdaq +1.5–2%, October hike probability drops below 50% |
| Core 2.9–3.2% (consensus) | 35% | 10Y maintains 4.4–4.5%, indices flat to slightly up |
| Core 3.3%+ (surprise upside) | 45% | 10Y 4.6%+, Nasdaq -2–3%, October hike probability 75%+ |
This is the basis for the report's statement that 'there is a 50%+ probability of surprise upside.' May is in the maximum secondary effect range, and services inflation pressure remains.
"The time for treating energy price shocks as 'transitory' has passed. Now we must watch whether inflation expectations themselves are becoming unanchored." — Minneapolis Fed paper summary (2026)
Investor Action Guide
- Tuesday–Wednesday (pre-PCE release): Reducing growth stock/Nasdaq exposure or adding hedges is favorable. With indices already near all-time highs, the asymmetric downside on a surprise is large.
- If PCE surprises to the upside: If the 10Y approaches 4.6%, even Micron's (June 24) earnings beat could be offset. Semiconductor holders should already reflect this risk in position sizing.
- If PCE meets consensus or comes in below: Combined with Russell rebalancing (June 26) supply-demand dynamics, a short-term bullish catalyst for small-caps and growth stocks. In this case, using post-rebalancing sell-the-news profit-taking to add IWM and SMH exposure is a viable sequence.
- Especially important for Korean investors: KOSPI faces the consecutive detonation of Micron earnings (June 24) and PCE (June 25) within 48 hours. NPS target weight increase provides support, but if both events come in negatively, a KOSPI 9,000pt downside test could materialize.