May 2026 PCE Inflation: Treasury Curve Bull Steepens

Oil tanker traveling through the Strait of Hormuz between rugged desert coastlines
PCE May 2026: Treasury Curve Bull Steepens as Oil Retreat Tempers Inflation Concern | Mariemont Capital

Duration & Credit Pulse

Week Ending June 28, 2026

Executive Summary

Bottom Line: The May 2026 PCE inflation report confirmed headline prices rose 4.1% year-over-year — consistent with the Federal Reserve's hawkish posture — but the monthly pace of 0.4% came in below the 0.5% consensus, and a greater-than-10% weekly retreat in Brent crude on Strait of Hormuz reopening news allowed the front end of the Treasury curve to rally meaningfully. The result was a bull steepening: the 2-year yield declined approximately 11 basis points to 4.07% while the 30-year fell only 2 basis points to 4.88%, widening the 2s30s spread by 9 basis points to 81 basis points. Credit markets remained near cyclical tights, with investment grade OAS at 72 basis points and high yield at 266 basis points — the 10th and 18th percentiles of their five-year ranges, respectively — reflecting risk-positive sentiment from lower energy costs but leaving limited margin for the tightening implications of Chair Warsh's hawkish framework.

Duration Dashboard

Maturity Jun 18, 2026† Jun 26, 2026* Weekly Δ 5-Year Percentile
2‑Year 4.18% 4.07%* −11 bp 56th %ile (middle range)*
5‑Year 4.23% 4.13%* −10 bp 71st %ile (middle range)*
10‑Year 4.46% 4.38%* −8 bp 81st %ile (elevated)*
30‑Year 4.90% 4.88%* −2 bp 88th %ile (elevated)*

† June 19, 2026 (Juneteenth) was a market holiday; June 18 represents the effective prior-week close.  |  * Current week figures sourced from external market data providers (Trading Economics, Advisor Perspectives, Federal Reserve H.15); the internal dataset was updated through June 22, 2026 as of publication. Percentiles estimated using the trailing 1,260-trading-day window ending June 18, 2026.

Front-End Relief Drives Bull Steepener; 2s30s Widens 9 Basis Points

3.9% 4.1% 4.3% 4.5% 4.7% 4.9% 2Y 5Y 10Y 30Y 4.07% 4.13% 4.38% 4.88% Jun 18, 2026 Jun 26, 2026 (est.)

Curve Analysis: The curve bull steepened over the week, with the 2s30s spread widening 9 basis points from 71.9 bp to 81.0 bp. The front end drove the move: the 2-year yield declined approximately 11 basis points as markets trimmed near-term rate-hike expectations in response to the softer PCE monthly print and materially lower energy prices. The 30-year declined only 2 basis points, as persistent inflation — headline PCE at 4.1% year-over-year — and Chair Warsh's explicit tightening bias kept long-end term premium broadly intact.

The week's dominant dynamic was a front-end relief rally following the May PCE report. While the year-over-year headline rate of 4.1% confirmed the inflation backdrop Warsh described at his inaugural FOMC press conference, the monthly pace of 0.4% — four basis points below the 0.5% consensus — gave markets reason to pare the more aggressive hike probabilities that had accumulated since the June 17 meeting. Simultaneously, the roughly 10% weekly retreat in Brent crude on Strait of Hormuz progress mechanically lowered the near-term inflation outlook, reinforcing the front-end move. As a result, the 2-year yield, which had risen to 4.18% in the prior week as Warsh's hawkish dot plot was digested, retraced meaningfully toward 4.07%. The long end, by contrast, found less relief: elevated year-over-year inflation, a still-robust personal income print (+0.7% in May), and the Fed's stated openness to additional tightening provided a floor for 30-year yields.

Treasury Auction Results — Solid Front End, Soft Belly: The week's $183 billion in coupon supply cleared with differentiated demand across tenors. The $69 billion 2-year drew a bid-to-cover of 2.64, modestly above the ten-auction average of 2.61, as investors pursued front-end carry above 4% in an environment where hike timing remains uncertain. The $70 billion 5-year was the week's notable soft point: it priced approximately 0.7 basis points cheap relative to the when-issued yield, with indirect takedown of 61.6% below recent averages, suggesting measured appetite among international accounts at current intermediate-tenor levels. The $44 billion 7-year drew middling demand. Supply cleared without incident, but the 5-year softness is worth monitoring — sustained below-average indirect participation would imply that foreign sovereign accounts are reducing US duration exposure at a time when the Fed's tightening bias implies additional supply pressure ahead.
Strait of Hormuz Reopening Compresses Energy Prices: Brent crude declined more than 10% during the week — its largest weekly retreat in over a month — as shipping transits through the Strait of Hormuz accelerated materially following progress toward a US-Iran diplomatic framework. Saudi Arabia resumed loading at its Ras Tanura terminal, and overall Persian Gulf export flows recovered to approximately 75% of pre-conflict levels. The development is significant for fixed income: lower oil reduces near-term headline inflation directly and, as evidenced by the sharp decline in the University of Michigan's 5–10 year inflation expectations (to 3.3% from 3.9% in May), it influences longer-run price expectations as well. The durability of this development remains the primary uncertainty: the diplomatic framework is preliminary, and any reversal would exert upward pressure on both energy prices and the long end of the curve.

Credit Pulse

Metric Jun 18, 2026† Jun 26, 2026* Weekly Δ 5-Year Percentile
IG OAS 74 bp 72 bp* −2 bp 10th %ile (low)*
HY OAS 267 bp 266 bp* −1 bp 18th %ile (low)*
VIX Index 16.40 16.50* +0.10 36th %ile (middle range)*

† June 18, 2026 effective prior-week close (Juneteenth observed June 19).  |  * Current week figures estimated from external market data providers. Percentiles estimated against trailing 1,260-trading-day window ending June 18, 2026.

Credit markets were broadly range-bound over the week, with investment grade OAS tightening 2 basis points to an estimated 72 basis points and high yield narrowing 1 basis point to approximately 266 basis points. The VIX was essentially unchanged at 16.50. The risk-positive tone from declining energy costs and a PCE print that did not worsen the inflation outlook at the margin supported credit technicals. Primary market supply remained active — investment grade issuance ran near $27 billion with orderbooks approximately 3.5 times oversubscribed — consistent with the view that investors continue to pursue yield in a still-resilient economic environment.

Credit Spreads Price Near Perfection Against a Hawkish Backdrop: Investment grade OAS at 72 basis points represents the 10th percentile of its five-year range — among the tightest readings of the post-COVID cycle. High yield at 266 basis points sits at the 18th percentile. At these levels, credit markets embed an assumption of continued favorable fundamentals: stable corporate earnings, manageable refinancing costs, and a Fed that tightens gradually if at all. Chair Warsh's June dot plot, which showed nine of eighteen FOMC members projecting at least one additional hike before year-end, is at least partially at odds with spread levels that leave limited room for the higher refinancing costs a tightening cycle implies. The combination of historically tight spreads and an explicit tightening bias from the Federal Reserve represents an asymmetry that warrants attention in credit positioning.

May 2026 PCE Inflation: Elevated Annual Rate, Softer Monthly Pace

The May 2026 Personal Consumption Expenditures price index was the focal point of the week's data calendar. Headline PCE rose 4.1% year-over-year — its highest reading in approximately three years and consistent with the re-acceleration that has defined the 2025–2026 inflation episode — while the monthly gain of 0.4% came in below the 0.5% consensus. Core PCE, the Federal Reserve's preferred gauge, rose 3.4% year-over-year and 0.3% month-over-month, the latter modestly above the 0.2% consensus but a shade below the pace that would have intensified hike pricing materially. The data confirmed the inflation backdrop that underpins Chair Warsh's hawkish framework while simultaneously providing the marginal improvement that allowed the front end to rally. For context, as documented in our June 2 report covering the April PCE release, the most recent comparable cycle featured a similar dynamic in which an elevated year-over-year reading accompanied a moderating monthly pace — a pattern that has complicated the Fed's communication challenge.

Personal income and spending remained resilient. May personal income rose 0.7% month-over-month — well above the 0.4% consensus — and personal spending matched at 0.7%. Real (inflation-adjusted) spending rose 0.3% and real incomes increased for the first time in four months. The personal saving rate held at 3.0%. These figures underscore that the consumer has not yet exhibited meaningful stress from elevated prices or the higher policy rate environment, a feature that complicates the Fed's calculus: robust spending sustains growth but also sustains inflation.

Q1 2026 GDP was revised upward to 2.1% annualized. The Bureau of Economic Analysis's third estimate of first-quarter growth came in at 2.1%, above both the second estimate of 1.6% and consensus expectations. The upward revision was driven primarily by a smaller-than-previously-measured import surge — a technical factor — while consumer spending was revised lower to a soft 0.5% annualized pace. Business fixed investment and government spending provided support. The headline figure offers a favorable characterization of recent growth but the consumer spending revision is worth monitoring as Q2 data accumulates.

Durable goods and labor market data filled out the picture. The May advance durable goods report showed a headline decline of 4.5% month-over-month, driven almost entirely by a sharp contraction in nondefense aircraft orders following an exceptionally strong April. Excluding transportation, orders rose 1.3%, and core capital goods orders (nondefense capital goods excluding aircraft) increased 1.6% — a positive signal for business investment. Initial jobless claims for the week ended June 20 came in at 215,000, below the 225,000 consensus and the prior reading of 226,000, indicating continued tightness in the labor market. The University of Michigan's June final sentiment index printed at 49.5, roughly in line with the 50.0 consensus; the more consequential component was the 5–10 year inflation expectations measure, which declined to 3.3% from 3.9% in May. This improvement in long-run inflation expectations, combined with the Hormuz oil development, contributed to the modest long-end relief visible in the yield curve.

Michigan 5–10 Year Inflation Expectations: A Constructive Shift: The analytically most significant data point of the week appeared within the June final University of Michigan survey: long-run inflation expectations (5–10 year) declined to 3.3% from 3.9% in May — a 60 basis point drop. Long-run expectations are a key variable in the Federal Reserve’s mandate calculus because they influence wage and price-setting behavior across the economy. The decline likely reflects households incorporating the sharp drop in energy costs associated with the Strait of Hormuz reopening. Chair Warsh has publicly emphasized anchoring long-run expectations; a sustained decline would reduce the urgency of additional tightening. The July final sentiment reading (due July 25, 2026) will be the first test of whether this constructive moderation extends.

Federal Reserve Policy Outlook

As described in detail in last week's Duration & Credit Pulse covering the June 2026 FOMC meeting, the Federal Open Market Committee voted unanimously to hold the federal funds rate at 3.50%–3.75% on June 17. Chair Warsh's inaugural press conference was unambiguously hawkish: the June Summary of Economic Projections showed nine of eighteen members projecting at least one additional 25 basis point increase before year-end, six of whom anticipated two such increases. The median year-end funds rate dot moved to 3.8% from 3.4% in March; year-end PCE inflation was revised up to 3.6%.

The May PCE data released this week did not materially alter that framework. The year-over-year headline of 4.1% and core of 3.4% confirm the inflation environment Warsh described. Markets entered the week with approximately 62–63% probability of a September hike priced via federal funds futures; following the PCE monthly miss and oil decline, those probabilities moderated somewhat but remained above 50%. New York Fed President John Williams, speaking Thursday, acknowledged that inflation remains too elevated but expressed confidence that the current policy stance is appropriate to bring it down. No additional FOMC members spoke during the week, consistent with the post-meeting communication period. The next scheduled FOMC meeting is July 28–29, 2026, with no Beige Book or minutes release expected before then.

Week Ahead: Payrolls, ISM, and the Independence Day Holiday Shortened Session

  • Conference Board Consumer Confidence – June (Tuesday, June 30): The June reading will provide the first post-PCE read on household sentiment. Michigan's final print of 49.5 suggests consumers remain cautious, and any deterioration in the Conference Board's expectations component would be notable given still-tight labor markets.
  • ISM Manufacturing PMI – June (Wednesday, July 1): The manufacturing sector has been a source of mixed signals in recent months. A reading below 50 would reignite concern about trade-policy drag on production; any improvement toward or above 50 would support the view that the goods sector is stabilizing.
  • JOLTS Job Openings – May (Wednesday, July 1): Labor market imbalance data will be scrutinized for evidence of cooling demand; any sustained decline in openings would complicate the case for further Fed tightening.
  • ADP Private Payrolls – June (Thursday, July 2): A directional preview for Friday's employment report. Given that initial claims remained near cyclical lows this week, the setup suggests continued payroll growth.
  • Nonfarm Payrolls – June (Thursday, July 2 or Friday, July 3): The most consequential release of the week. July 4 (Independence Day) falls on a Saturday, and the observed holiday on Friday July 3 is expected to shorten the trading session; the Bureau of Labor Statistics may advance the release to Thursday July 2. Investors will be attentive to payroll growth, average hourly earnings, and the unemployment rate as the Fed calibrates its September meeting decision.

PCE May 2026 in Global Context: Synchronized Central Bank Tightening

The global backdrop for the week ending June 28, 2026 reinforced a synchronized hawkish shift among major central banks, providing important context for the May 2026 PCE inflation data that drove domestic Treasury markets. The European Central Bank raised rates 25 basis points on June 11 — bringing the deposit facility rate to 2.25% — citing war-driven inflation with its 2026 euro-area inflation projection at 3.0%. The Bank of Japan hiked to 1.0% — its highest policy rate since 1995 — on June 16, with BOJ officials reiterating a continued tightening trajectory toward a neutral rate in the vicinity of 2.0%. Both developments reduce the relative interest rate advantage that has historically supported foreign demand for US Treasuries; a softening US dollar and the energy price deflation visible in oil markets provide some offset through lower import prices. Taken together, the global central banking environment of mid-2026 represents a departure from the policy divergence that characterized 2023–2024, when the Fed was tightening in relative isolation.

The Strait of Hormuz development merits consideration beyond its near-term price impact. As covered in our June 14 report on the May CPI release, the Iran-related geopolitical risk premium had been embedded in energy markets and long-end Treasury yields for several months. A durable resolution — to the extent one materializes — would represent a meaningful disinflationary impulse and could provide the Fed with justification to pause its tightening cycle. However, the diplomatic framework remains preliminary, and historical precedent suggests care in extrapolating from early-stage progress toward the more concrete agreements that move markets durably. For now, the development is a directional positive for fixed income but not a structural conclusion.

Frequently Asked Questions

What did the May 2026 PCE inflation report show?

The May 2026 PCE report showed headline inflation rising 4.1% year-over-year, its highest reading in approximately three years, while the monthly pace of 0.4% came in below the 0.5% consensus — a modest positive surprise. Core PCE rose 3.4% year-over-year and 0.3% month-over-month, the latter slightly above the 0.2% consensus. The data confirmed the elevated inflation backdrop underlying Chair Warsh's hawkish Fed framework while providing enough marginal improvement to allow a front-end Treasury rally.

Why did Treasury yields decline despite the hawkish Warsh FOMC stance?

Despite the Federal Reserve's hawkish posture — nine of eighteen FOMC members projected at least one additional hike before year-end in the June dot plot — Treasury yields declined during the week ending June 28, 2026. The combination of a softer-than-expected PCE monthly print (0.4% vs. 0.5% consensus) and a greater-than-10% weekly retreat in Brent crude on Strait of Hormuz reopening news led markets to trim near-term rate-hike probabilities, with the front end (2-year) falling approximately 11 basis points. The long end declined only modestly, as persistent year-over-year inflation and Warsh's explicit tightening bias maintained term premium.

How did the Treasury yield curve move the week ending June 28, 2026?

The yield curve bull steepened over the week: all points declined, but the front end fell materially more than the long end. The 2-year yield declined approximately 11 basis points while the 30-year fell only 2 basis points, widening the 2s30s spread by 9 basis points from 71.9 to 81.0 basis points. The move reflected markets reducing near-term hike bets more aggressively than long-end inflation premium, consistent with a PCE monthly figure that was slightly better than feared but an annual rate that remains well above target.

Why are credit spreads historically tight despite a hawkish Federal Reserve?

Investment grade OAS at approximately 72 basis points (10th percentile of its five-year range) and high yield at approximately 266 basis points (18th percentile) reflect a credit market that is drawing support from resilient labor markets, still-solid corporate fundamentals, and the risk-positive tone provided by lower energy costs. Technically, demand for income-generating assets remains robust as evidenced by 3.5 times oversubscribed IG new-issue books. The risk is that current spread levels embed limited cushion for the earnings impact of higher corporate financing costs that Warsh's tightening bias implies over a multi-quarter horizon.

Key Articles of the Week

  • Prior Week's Report: June 2026 FOMC Meeting — Fed Turns Hawkish, Curve Flattens
    Mariemont Capital | Duration & Credit Pulse
    June 22, 2026
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  • GDP (Third Estimate), Industries, Corporate Profits, State GDP and State Personal Income, 1st Quarter 2026
    U.S. Bureau of Economic Analysis
    June 25, 2026
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  • Personal Income and Outlays, May 2026
    U.S. Bureau of Economic Analysis
    June 26, 2026
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  • Advance Report on Durable Goods — May 2026
    U.S. Census Bureau
    June 25, 2026
    View Release
  • Surveys of Consumers — June 2026 Final
    University of Michigan
    June 26, 2026
    Read Survey
  • H.15 Selected Interest Rates — June 26, 2026
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    June 26, 2026
    View Data
Content Produced By:
Justin Taylor, CFA

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Sources: Available upon request to jt@mariemontcapital.com
Data extracted from public and private data sources.
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Published: Sunday, June 28, 2026, 7:15 PM EST