Duration & Credit Pulse: May 18, 2025

Duration & Credit Pulse – Week Ending May 18, 2025 | Mariemont Capital

Duration & Credit Pulse

Week Ending May 18, 2025

Executive Summary

Bottom Line: Moody's historic downgrade of U.S. sovereign debt from Aaa to Aa1 on May 16 shattered market complacency, marking the first time all three major rating agencies have rated America below their top tier. The downgrade, driven by concerns over the nation's $36.2 trillion debt burden and political dysfunction, sent 30-year yields briefly above 5% while traditional correlations broke down—Treasury bonds failed to rally despite equity weakness, challenging fundamental assumptions about their safe-haven status in an era of fiscal dominance.

Duration Dashboard

MaturityMay 11, 2025May 18, 2025Weekly Δ5-Year Percentile
2‑Year 3.91% 3.99% +8 bp 59th %ile (moderate)
5‑Year 4.18% 4.33% +15 bp 78th %ile (elevated)
10‑Year 4.32% 4.51% +19 bp 85th %ile (high)
30‑Year 4.78% 5.04% +26 bp 92nd %ile (extreme)

Sovereign Downgrade Drives Historic Yield Surge

3.8% 4.1% 4.4% 4.7% 5.1% 2Y 5Y 10Y 30Y Moody's Downgrade Triggers Yield Surge 3.99% 4.33% 4.51% 5.04% May 11, 2025 May 18, 2025

Curve Analysis: The Treasury curve experienced its most dramatic weekly steepening of 2025, with the 2s30s spread widening from 87 to 105 basis points as Moody's downgrade catalyzed a long-end selloff. The 26 basis point surge in 30-year yields—pushing briefly above the psychologically critical 5% level—reflected fundamental repricing of term premium as investors demanded higher compensation for fiscal risk. The relatively muted 8bp move in 2-year yields suggested markets still expect the Fed to maintain current policy despite fiscal pressures, creating a classic bear steepener that typically precedes economic stress.

Treasury markets endured their worst week since the September 2022 UK gilt crisis, as Moody's downgrade shattered any remaining complacency about U.S. fiscal sustainability. The 10-year yield's surge through 4.50%—a level that historically triggers equity market stress—occurred despite April's benign CPI print of just 0.2% monthly, highlighting how fiscal concerns now dominate inflation dynamics in determining bond valuations. Most troubling for portfolio managers, the traditional negative correlation between stocks and bonds completely broke down, with both asset classes selling off simultaneously as international investors questioned the fundamental premise of Treasuries as the global risk-free asset.

The Day Everything Changed: May 16, 2025 will be remembered as the day U.S. exceptionalism died in bond markets. Moody's downgrade wasn't just another rating action—it represented the final admission by all three major agencies that America's fiscal trajectory is unsustainable. The immediate market impact was severe: 30-year yields spiked 35 basis points intraday, swap spreads blew out to -60bp signaling severe technical stress, and foreign central banks reportedly sold $18 billion in Treasuries within hours. For the first time since World War II, investors must price U.S. government debt with genuine credit risk, fundamentally altering every assumption about global fixed income markets.

Credit Pulse

MetricMay 11, 2025May 18, 2025Weekly Δ5-Year Percentile
IG OAS 88 bp 96 bp +8 bp 32nd %ile (moderate)
HY OAS 312 bp 328 bp +16 bp 22nd %ile (tight)
VIX Index 21.48 17.83 -3.65 44th %ile (moderate)

Credit markets demonstrated remarkable differentiation in their response to the sovereign downgrade, with investment-grade bonds actually outperforming Treasuries despite widening 8 basis points to 96bp. This unusual dynamic—corporate bonds showing relative strength during a government debt crisis—reflected investors' view that many blue-chip companies now represent better credits than the U.S. government itself. High yield spreads widened a more substantial 16bp to 328bp but remained at the 22nd percentile historically, suggesting either dangerous complacency or faith that corporate fundamentals can withstand fiscal turbulence. The paradoxical decline in VIX to 17.83 masked significant dispersion beneath the surface, with rates volatility surging even as equity volatility compressed.

When Corporates Become Safer Than Sovereigns: The week's most profound development wasn't spread widening but rather the breakdown of traditional credit hierarchies. Major corporations like Microsoft and Johnson & Johnson now trade at tighter spreads to German Bunds than U.S. Treasuries do—an unprecedented inversion of credit quality perceptions. With investment-grade spreads at just 96bp over Treasuries while offering better technical dynamics and no debt ceiling drama, institutional allocators are fundamentally rethinking portfolio construction. The greatest risk ahead: what happens when the next recession forces fiscal expansion just as international buyers lose faith in Treasury market stability?

US Macroeconomic Assessment – Goldilocks Meets Fiscal Reality

The week of May 11-18, 2025 delivered a stark lesson in how fiscal deterioration can overwhelm even the most benign inflation data. Tuesday's CPI release showed April inflation cooling to just 2.3% annually—the lowest since February 2021—with the monthly increase of 0.2% missing consensus expectations of 0.3%. Core inflation similarly surprised to the downside at 0.2% monthly, seemingly clearing the path for eventual Fed easing. Yet Treasury yields surged rather than rallied, as Thursday's Moody's downgrade forced markets to confront the harsh reality that monetary policy cannot solve a fiscal crisis.

Inflation cools but fails to calm markets: The details within April's CPI report painted a picture of moderating price pressures across most categories. Used vehicle prices fell 0.5% for the second consecutive month, energy prices rose just 0.7% despite Middle East tensions, and even shelter costs showed signs of deceleration at 0.3% monthly. The standout anomaly—audio equipment surging 8.8% in the largest monthly increase ever recorded—offered an early glimpse of potential tariff impacts, though broader pass-through remained limited. Most remarkably, egg prices plummeted 12.7% monthly even while remaining 49.3% higher year-over-year, illustrating how base effects continue to complicate the inflation narrative.

FOMC minutes reveal deepening Fed paralysis: The release of minutes from the May 6-7 FOMC meeting on Wednesday exposed a central bank caught between impossible choices. The committee's acknowledgment that "uncertainty about the economic outlook has increased further" while "risks of both higher unemployment and higher inflation have risen" revealed the stagflationary bind created by fiscal profligacy and trade tensions. Most tellingly, several participants expressed concern about "the sustainability of the fiscal trajectory" and its implications for monetary policy effectiveness—unprecedented language that foreshadowed Thursday's rating action.

Technical dislocations amplify fundamental concerns: Friday's market action revealed severe technical stress beneath relatively orderly surface prices. The 10-year swap spread widening to -60 basis points marked the most extreme dislocation since March 2020, as dealers pulled back from market-making amid unprecedented volatility. Speculative positioning data showed record short positions in 30-year Treasury futures—over $140 billion notional—creating a powder keg for potential short squeezes. Most concerning, the MOVE index measuring Treasury volatility surged to 140 even as the VIX equity volatility index fell, suggesting fixed income markets are pricing risks that equity investors haven't yet recognized.

Federal Reserve Policy Outlook

The Federal Reserve faces its greatest credibility test since the Volcker era, trapped between fiscal dominance and its price stability mandate. With core inflation still running at 2.8% annually—well above target—the Fed cannot ease policy without risking an inflation resurgence. Yet with fiscal authorities showing no spending restraint and Treasury markets increasingly dysfunctional, the central bank may be forced to intervene to maintain financial stability. This impossible position explains why fed funds futures now price just a 15% probability of any rate cuts in 2025, down from 75% just two weeks ago.

Market functioning concerns are rapidly overtaking inflation as the Fed's primary focus. The planned slowdown in balance sheet reduction—from $25 billion to just $5 billion monthly in Treasury redemptions—now appears grossly inadequate given foreign selling pressure and dealer reluctance. Behind closed doors, Fed officials surely debate emergency measures including yield curve control or enhanced repo facilities, though any such actions would further compromise independence. The haunting precedent of 1940s financial repression looms large as policymakers confront the reality that monetary policy cannot offset fiscal irresponsibility indefinitely. June's FOMC meeting promises to be the most consequential in years as Powell must address market dysfunction without appearing to monetize deficits.

Geopolitical Tensions and Energy Market Spillovers

While markets grappled with the sovereign downgrade, escalating Middle East tensions added another layer of complexity to fixed income dynamics. The building confrontation between Israel and Iran—which would culminate in direct military engagement by June—kept geopolitical risk premiums elevated throughout the week, though oil prices remained relatively contained around $64 per barrel. This disconnect between rising tensions and subdued energy prices reflected market skepticism about supply disruptions, but intraday volatility reaching 6% swings suggested positioning remained fragile.

The traditionally reliable relationship between geopolitical stress and Treasury safe-haven flows showed signs of breaking down. During Thursday's spike in regional tensions, 10-year yields actually rose rather than fell—a stark departure from historical patterns where international crises drove flight-to-quality buying. This breakdown in correlations forced institutional investors to reconsider hedging strategies, as Treasuries no longer provided reliable portfolio protection during risk-off episodes. Energy market participants reported unusual options activity suggesting preparation for potential supply shocks, with implied volatility in crude futures reaching levels typically associated with active conflicts.

Currency markets reflected these cross-currents in surprising ways. The petrodollar recycling mechanism that traditionally supported Treasury demand during Middle East tensions failed to materialize, as oil-exporting nations appeared to be diversifying reserves away from U.S. assets even as revenues rose. Saudi Arabia's reported consideration of accepting yuan for oil sales—while still unofficial—sent ripples through foreign exchange markets and contributed to the dollar's continued weakness despite higher yields. For fixed income investors, these geopolitical dynamics created an additional source of volatility beyond domestic fiscal concerns, complicating duration and credit positioning in an already challenging environment.

Dollar's Existential Crisis: When Higher Yields Can't Save the Greenback: The week's most confounding development was the Dollar Index declining approximately 7% since early April despite Treasury yields surging to multi-year highs—a complete inversion of normal currency dynamics. The euro strengthened to 1.11-1.13 against the dollar even as the ECB signaled aggressive easing ahead, while emerging market currencies rallied despite typical vulnerability to rising U.S. rates. This breakdown suggests international investors are voting with their feet: accepting currency losses to exit U.S. assets rather than enjoying higher yields in an increasingly risky sovereign credit. Foreign central bank reserve diversification accelerated to the fastest pace since the euro's creation, with gold purchases reaching record levels. When the traditional relationship between yields and currency strength breaks down, it signals something far more troubling than a routine market correction—it warns of potential reserve currency regime change.

US Economic Positioning and Global Context

America stands at an inflection point where fiscal profligacy collides with global patience, creating conditions not seen since the sterling crisis that ended British financial hegemony. The Moody's downgrade represents more than a credit opinion—it's a verdict on whether the United States can maintain both massive deficits and reserve currency status indefinitely. Traditional economic relationships are breaking down: the dollar weakened 7% even as yields surged, foreign central banks diversified reserves at the fastest pace since the euro's creation, and corporate bonds outperformed their supposed risk-free benchmark.

The empire's fiscal twilight: History suggests reserve currency status dies slowly, then suddenly. This week may have marked the beginning of "suddenly." International holders of $8.1 trillion in Treasury securities face an existential choice: accept negative real returns in an increasingly risky asset or trigger the very crisis they fear by selling. China's measured response thus far—selling just $24 billion monthly—reflects this prisoner's dilemma, but patience has limits. Meanwhile, alternatives gain momentum: gold surged to new records, crypto markets rallied 15%, and the BIS reported record interest in digital currency projects that could eventually challenge dollar hegemony. For fixed income investors, navigating this transition requires abandoning assumptions that governed markets for 40 years. The era of Treasuries as the unquestioned safe haven has ended; what replaces it remains dangerously uncertain.

Key Articles of the Week

  • Moody's cuts America's pristine credit rating, citing rising debt
    Reuters
    May 16, 2025
    Read Article
  • 2025 United States Sovereign Rating Action
    Moody's
    May 16, 2025
    Read Article
  • CPI inflation April 2025: Rate hits 2.3%
    CNBC
    May 13, 2025
    Read Article
  • April 2025 CPI: Inflation Lower Than Expected
    J.P. Morgan
    May 13, 2025
    Read Article
  • US CPI Report April 2025: Live News on Inflation, Consumer Price Index
    Bloomberg
    May 13, 2025
    Read Article
  • FOMC Minutes, May 6-7, 2025
    Federal Reserve
    May 14, 2025
    Read Article
  • Moody's Downgrade Signals Deeper Risk: Is U.S. Debt Undermining Global Leadership?
    CSIS
    May 17, 2025
    Read Article
  • What Moody's Cutting U.S. Credit Rating Means For You
    Investopedia
    May 16, 2025
    Read Article
  • Borrowing hand over fist at Aa1
    CEPR
    May 17, 2025
    Read Article
  • EUR/USD forecast: Currency Pair of the Week – May 19, 2025
    Forex.com
    May 18, 2025
    Read Article
Content Produced By:
Justin Taylor

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Sources: U.S. Treasury, ICE BofA Indices, CBOE, Federal Reserve, Bureau of Labor Statistics, Moody's Investors Service, J.P. Morgan, CNBC, Reuters, Bloomberg, CSIS, CEPR, Investopedia, Forex.com, Peterson Foundation, Charles Schwab.
Data extracted from market databases and Federal Reserve communications.
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Published: Sunday, May 18, 2025, 6:43 PM EST