In May 2026 the global financial environment was characterized by a widening US‑Euro interest rate gap and pronounced asymmetry in central bank policies. According to data published by the Federal Reserve Bank of St. Louis (FRED), the US 10‑year yield was 4.45% (month‑on‑month +3bp). The European Central Bank, Statistical Data Warehouse reports the euro‑area 10‑year yield at 3.035% (month‑on‑month -10.8bp), bringing the US‑EU 10‑year spread to 141.5bp (month‑on‑month +13.8bp). The ECB deposit facility rate minus the 2‑year yield gap stood at -53bp, an improvement from -67bp the prior month, indicating a retreat in market‑priced easing expectations. The FRB balance sheet changed month‑on‑month +0.07%, signaling a marked slowdown in the pace of reduction, while the ECB continued to shrink at -0.47%. These movements underscore a clearer divergence in policy stances across the three central banks. US M2 money supply remained elevated year‑on‑year at +5.44%, consistent with active credit creation.
FRED data show the US 10‑year yield at 4.45% in May 2026, up from 4.42% in the prior month (+3bp). The 2‑year yield rose to 3.99% (month‑on‑month +7bp), compressing the 10Y‑2Y spread to 46bp from 50bp (-4bp). Since February 2026 there has been no published Fed Funds rate data, preventing a quantified evaluation of the policy rate‑2Y gap; as of January 2026 the gap was +12bp, indicating that the policy rate exceeded the 2‑year yield and markets were pricing in rate cuts.
The faster rise in the 2‑year yield (+7bp) relative to the 10‑year (+3bp) continues to flatten the yield curve. In a Nelson‑Siegel Level/Slope interpretation, this suggests upward pressure on short‑term rates outpacing long‑term rates. The 10‑year yield level of 4.45% is +19bp above January 2026 (4.26%), which may reflect upward revisions to inflation expectations or real growth expectations.
According to the ECB Statistical Data Warehouse, the euro‑area AAA 10‑year yield was 3.035% in May 2026, down from 3.143% in April (-10.8bp). The 2‑year yield declined to 2.525% (month‑on‑month -14bp), widening the 10Y‑2Y spread to 51bp from 47.7bp (+3.3bp). The ECB deposit facility rate was unchanged at 2.00%, leaving the deposit rate minus the 2‑year yield gap at -53bp (improved from -67bp). This points to a reduction in market‑priced expectations of easing.
Because the 2‑year yield fell more (-14bp) than the 10‑year (-10.8bp), the yield curve steepened. From a Nelson‑Siegel perspective, short‑term downward pressure exceeded that on long yields, consistent with relatively stronger medium‑to‑long‑term growth or rate expectations. The 10‑year yield level of 3.035% is +13.2bp above January 2026 (2.903%), indicating a continued upward trend in the Level component.
For Japan, JGB yield data and BOJ monetary base data have not been provided since February 2026, so quantitative analysis of rate levels and policy‑rate gaps is not possible. As of January 2026, the 10Y‑2Y spread was 99.6bp, steeper than the US (74bp) and euro area (85.4bp).
According to the Statistics Bureau, in April 2026 headline CPI rose +1.4% year‑on‑year, core CPI +1.4%, and core‑core CPI +1.9%, all showing a downward trend from prior months. Core‑core CPI has decelerated for five consecutive months since peaking at +2.9% in December 2025, indicating easing inflationary pressure. Given this price environment, the BOJ is likely to adopt a restrained pace of tightening, so Japan's financial environment is inferred to be relatively accommodative.
In May 2026 the three regions exhibited contrasting yield curve dynamics. The US 10Y‑2Y slope was 46bp (month‑on‑month -4bp), a flattening of 28bp since January 2026 (74bp). By contrast, the euro‑area slope stood at 51bp (month‑on‑month +3.3bp), reversing upward from a March 2026 trough of 49.4bp.
From a Nelson‑Siegel Level viewpoint, the US 10‑year at 4.45% is +19bp vs January, and the euro‑area 10‑year at 3.035% is +13.2bp vs January, indicating both regions continue to exhibit upward Level trends, consistent with upward revisions to inflation or real growth expectations.
The US flattening has been driven by a much larger increase in the 2‑year yield since January (+47bp) relative to the 10‑year (+19bp), meaning short‑term interest rate pressures have dominated and the expected short‑rate path has shifted upward. From a term premium perspective, the suppression of long‑term yield increases suggests a possible compression of the term premium.
The euro‑area steepening reflects that although the 2‑year yield has increased more year‑to‑date (+47.5bp) than the 10‑year (+13.2bp), in May specifically the 2‑year fell more (-14bp) than the 10‑year (-10.8bp), producing a month‑on‑month steepening. This points to a short‑term retreat in easing expectations together with relatively stronger medium‑to‑long‑term growth or rate expectations.
Using January 2026 data, Japan’s 10Y‑2Y spread of 99.6bp substantially exceeded the US (74bp) and euro area (85.4bp), marking the steepest curve among the three. This reflects the BOJ’s very low policy rate relative to comparatively higher long‑term yields.
By May 2026 the US and euro‑area slopes had converged around 46bp and 51bp respectively, though formed through contrasting dynamics: the US experienced a 28bp flattening since January, while the euro area flattened by 34.4bp from January before reversing to steepen in May. Both regions had been on a flattening trend since early 2026, with the euro area exhibiting a notable reversal in May.
FRED data show the FRB total assets at $6,704.4 billion in May 2026, a month‑on‑month change of +0.07%. This represents a pronounced slowdown from prior months (+0.64% in the previous month and +0.66% in March). The cumulative change over the four months since February 2026 is +1.37%, averaging +0.34% per month.
The ECB’s total assets were €6,186.5 billion in May 2026, a month‑on‑month decline of -0.47%. This reverses the prior month’s +0.87% expansion and returns to a shrinkage trend comparable to February (-0.88%) and March (-1.16%). The cumulative change since February 2026 is -1.65%, averaging -0.41% per month.
BOJ monetary base monthly changes cannot be calculated because data after January 2026 are not available.
Comparing normalization paces across currencies, the FRB shows a monthly average asset increase of +0.34% while the ECB shows a monthly average asset decrease of -0.41%, underscoring divergent policy stances. The FRB maintained expansion rates in the +0.6% range through April but decelerated sharply to +0.07% in May, which could indicate a pause or a major adjustment in QT. The ECB, despite a temporary expansion in April, returned to contraction in May, suggesting the QT trajectory remains intact.
Converting FRB and ECB total assets into US dollars (EUR/USD ≈ 1.08), the combined total stood at 13.39trillioninMay2026,aslightdecreaseof−0.1513.41 trillion in April. Compared with $13.38 trillion in January 2026, the aggregate is +0.07%, effectively flat and indicating stable global excess liquidity.
Monthly movements show declines in February (13.35trillion,−0.2213.31 trillion, -0.30%), a rebound in April (13.41trillion,+0.7513.39 trillion, -0.15%). This pattern reflects a partial offset between FRB asset increases and ECB asset reductions.
Because BOJ monetary base data are not included, the assessment of true global excess liquidity is constrained; however, the US‑EU combined movements alone suggest global liquidity is in an adjustment phase rather than a phase of large‑scale expansion or contraction.
Cross‑region M2/M3 growth: US M2 remains elevated at year‑on‑year +5.44%
FRED reports US M2 at $22,879.0 billion in May 2026, a month‑on‑month decline of -1.02% but a year‑on‑year increase of +5.44%, remaining at a high growth rate. Year‑on‑year M2 growth progressed as follows: January +4.22%, February +4.38%, March +3.57%, April +6.5%, and May +5.44% — a jump to +6.5% in April followed by a modest slowdown in May, but still firmly in the +5% range.
Euro‑area M3 year‑on‑year growth data after January 2026 (+3.44%) are not available, and Japan M2 stock data for 2026 are likewise not provided.
US M2 year‑on‑year growth at +5.44% indicates active credit creation. With the FRB balance sheet slowing to +0.07% in May while M2 growth remains in the +5% range, private‑sector credit creation appears to more than offset central bank asset reductions, implying an accommodative transmission of liquidity to the real economy.
Based on FRED and ECB data, the US‑EU 10‑year spread widened to 141.5bp in May 2026 from 127.7bp in April (+13.8bp). The spread had previously narrowed from 135.7bp in January to 127.3bp in February and 125.6bp in March, but widened again in April and May.
The widening reflects a +3bp move in the US 10‑year versus a -10.8bp move in the euro‑area 10‑year, reflecting residual US tightening expectations and relatively stronger euro‑area easing expectations. A 141.5bp spread increases the relative attractiveness of dollar‑denominated assets and exerts upward pressure on dollar funding demand.
Latest US‑Japan and Japan‑EU 10‑year spreads cannot be calculated because Japanese 10‑year yield data have not been provided since February 2026. As of January 2026 the US‑Japan 10‑year spread was 201.3bp and the Japan‑EU 10‑year spread was -65.6bp.
Using the January 2026 Japanese 10‑year yield of 2.247% as a hypothetical unchanged level, the May 2026 US‑Japan spread would be approximately 220bp (4.45% - 2.25%) and the Japan‑EU spread approximately -79bp (2.25% - 3.035%). These are hypothetical estimates and not based on current Japanese yield data.
The 141.5bp widening of the US‑EU 10‑year spread enhances the profitability of carry trades that borrow in euros to invest in dollars. The ECB deposit facility at 2.00% versus the US 2‑year yield at 3.99% yields a short‑term rate differential of 199bp, leaving a substantial short‑term carry advantage.
Carry trades remain exposed to FX risk. A widening US‑EU spread tends to push the dollar higher, which can generate additional FX gains for existing positions but raises reversal risk for new entrants if the dollar subsequently weakens.
Although up‑to‑date US‑Japan spread data are unavailable, the January 2026 US‑Japan spread of 201.3bp suggested the yen carry trade remained attractive. Given Japan’s April 2026 core‑core CPI at +1.9% — below the BOJ’s 2% target — the BOJ’s tightening pace is likely restrained, supporting persistently wide US‑Japan differentials.
Statistics Bureau data for April 2026 show Japan headline CPI +1.4% y/y, core CPI +1.4% y/y, and core‑core CPI +1.9% y/y, all declining month‑on‑month. Core‑core CPI has decelerated five consecutive months since the December 2025 peak of +2.9%, and +1.9% remains below the BOJ’s 2% objective.
This disinflationary trend argues for a suppressed BOJ tightening pace. As of January 2026 the BOJ call rate minus the JGB 2‑year yield gap was -52bp, indicating the policy rate was materially below market yields and markets had priced in BOJ tightening. With CPI now below target, market expectations of BOJ rate hikes are likely to have receded.
CPI data for the US and euro area are not provided here, so cross‑regional price comparisons cannot be completed. However, the US 10‑year yield at 4.45% remains high, suggesting persistent US inflation expectations. The euro‑area 10‑year at 3.035% is also +13.2bp above January, implying some upward revision to euro‑area inflation expectations.
Cabinet Office data indicate Japan’s leading index was 114.0 in March 2026, up from 113.2 (+0.8 points), and the coincident index was 116.4, up from 116.2 (+0.2 points). The leading index has risen for six consecutive months from 108.1 in September 2025 to March 2026, a gain of +5.9 points. The coincident index has been in an uptrend since bottoming at 113.9 in August 2025 and, although slightly below its January 2026 peak of 117.9, remains in the 116 range.
These indices suggest Japan is in an expansionary phase. The rising leading index points to continued near‑term expansion, consistent with the steep 10Y‑2Y spread of 99.6bp observed in January 2026: a steep curve reflects market expectations of future growth.
METI’s seasonally adjusted industrial production index rose to 102.2 in February 2025 from 99.9 (+2.3%), rebounding from a -1.1% decline in January 2025. However, no data have been provided beyond February 2025, so production trends in 2026 are unknown.
Looking at the 12 months from March 2024 to February 2025, the index fluctuated between roughly 100 and 103, showing no clear trend and indicating stable production activity without a pronounced expansion or contraction. Given this stability in manufacturing output and the rising leading index, it is possible that services or non‑manufacturing sectors are driving the broader economic expansion.
BOJ Tankan results for Q1 2026 (March survey) show the business conditions DI for large manufacturers at +17, up from +15 in Q4 2025 (+2 points), and large non‑manufacturers at +36, up from +34 (+2 points). The large‑manufacturers DI has improved for four consecutive quarters since +13 in Q2 2025, a net +4 point improvement. Large non‑manufacturers have remained at elevated levels (34→34→34→36 since Q2 2025).
Looking ahead, the large‑manufacturers forward DI is 15 and large non‑manufacturers forward DI is 28, both below the current DI levels, indicating firms are somewhat cautious about the outlook, though not pessimistic given the positive DI.
Medium‑sized manufacturers’ DI is 16 (unchanged), and small manufacturers’ DI is 7, up from 6 (+1). Small manufacturers have improved by +6 points since Q2 2025 (from 1 to 7), suggesting sentiment gains have spread to smaller firms.
This improvement in corporate sentiment aligns with the rising leading index. Relative financial accommodation in Japan may be supporting sentiment improvements.
Trade balance: December 2025 surplus ¥94.8 billion but trend remains volatile
Ministry of Finance trade statistics indicate a trade surplus of ¥94.8 billion in December 2025, down from ¥306.0 billion in November but marking the second consecutive month of surplus. From May–December 2025 the trade balance moved erratically: -¥662.5 billion → +¥122.2 billion → -¥156.3 billion → -¥294.1 billion → -¥277.7 billion → -¥242.9 billion → +¥306.0 billion → +¥94.8 billion, showing alternating deficits and surpluses.
Exports in December 2025 were ¥10,407.7 billion, up 7.2% from ¥9,708.9 billion in November and the highest in eight months. Imports were ¥10,312.9 billion, up 9.7% from ¥9,402.9 billion in November. While both exports and imports rose, imports often outpaced exports, preventing a persistent surplus.
With volatile trade balances, Japan’s external position depends significantly on other current account items (e.g., investment income). As of January 2026, the US‑Japan 10‑year spread of 201.3bp suggested high returns on external investments for Japanese investors. Japanese investors deploying capital into US high‑yield assets can expand the primary income surplus.
From a yen carry trade perspective, sustained wide US‑Japan yield differentials exert yen depreciation pressure. In a structure where the current account is supported by investment income rather than trade, yen depreciation may not be offset by trade improvements, making it easier for carry trade positions to be maintained.
However, trade statistics after April 2026 are not available, constraining a timely assessment of Japan’s current external position.
Base case: continued US‑EU policy asymmetry, Japan remains relatively accommodative
The base case based on May 2026 data is continued asymmetry between US and euro‑area financial environments, with Japan remaining relatively accommodative. The FRB balance sheet reduction pace slowed sharply to +0.07% in May, suggesting a possible pause or major adjustment in QT. Meanwhile, M2 growth remains strong at +5.44% y/y, indicating active private credit creation. Under these conditions, the US 10‑year yield is expected to hover in the mid‑4% range.
In the euro area, the ECB balance sheet contracted month‑on‑month -0.47% in May, maintaining a QT bias. With the ECB deposit‑2Y gap at -53bp and easing expectations diminished, the euro‑area 10‑year yield is expected to trade in the low‑to‑mid 3% range. The US‑EU 10‑year spread should remain near 140bp, sustaining strong dollar funding demand.
In Japan, with core‑core CPI at +1.9% (below target) and a rising leading index and improving corporate sentiment, the real economy looks resilient while monetary tightening is likely to remain restrained. Japan’s financial environment is expected to stay relatively accommodative, keeping US‑Japan yields widely divergent.
A key risk is a rapid reversal of the US‑EU yield gap triggering capital flow reversals. While the US‑EU 10‑year spread stands at 141.5bp and has recently widened, an unexpected Fed rate cut or unexpectedly strong euro‑area growth prompting ECB tightening could sharply compress the spread.
If the US‑EU spread were to fall below 100bp, euro‑funded positions in dollar assets could be unwound, inducing dollar weakness and euro strength and exerting downward pressure on US risk assets.
On the US‑Japan front, an unexpected BOJ tightening would trigger unwind of yen carry trades and rapid yen appreciation. Given April 2026 core‑core CPI at +1.9% — below 2% — this risk is limited, but a renewed CPI rise above +2% would materially increase the probability of BOJ policy shifts and associated FX volatility.
Key indicators to watch next month are: (1) the FRB balance sheet monthly change. The sharp slowdown to +0.07% in May could be temporary or a structural change; sustained readings below +0.1% would suggest a de facto pause in QT. (2) ECB deposit rate developments. With the deposit rate at 2.00% and the deposit‑2Y gap at -53bp, the timing of any ECB rate cuts remains pivotal. Continued maintenance of 2.00% would further diminish easing expectations and could raise upward pressure on euro‑area long yields. (3) Japan CPI. If core‑core CPI remains below +2% after May, the BOJ’s tightening pace will likely stay constrained and wide US‑Japan spreads will persist; conversely, a renewed rise above +2% would heighten BOJ policy‑shift risk and the potential for carry‑trade unwinds.
Data sources
- Source: Federal Reserve Bank of St. Louis (FRED), https://fred.stlouisfed.org/
- Source: European Central Bank, Statistical Data Warehouse
- Source: Ministry of Finance, Japan — Government Bond Yield Information
- Source: Bank of Japan — Time Series Data
- Source: Statistics Bureau of Japan — Consumer Price Index
- Source: Cabinet Office, Government of Japan — Index of Coincident and Leading Indicators
- Source: Ministry of Economy, Trade and Industry (METI) — Industrial Production Index
- Source: Ministry of Finance, Japan — Trade Statistics
Nelson-Siegel model: An approach to decompose the yield curve into three components: Level, Slope, and Curvature. Level represents the absolute long‑term yield, Slope represents the long‑short spread (e.g., 10Y‑2Y), and these components reflect cycle and policy expectations.
Term premium: The portion of long‑term bond yields that exceeds the expected path of future short rates. It represents the additional yield investors require for holding long‑term bonds to compensate for interest‑rate risk and liquidity risk.
Policy rate‑2Y gap: The difference (in bp) between a central bank’s policy rate and the 2‑year government bond yield. A positive value (policy rate > 2Y yield) implies markets are pricing rate cuts; a negative value implies rate‑hike expectations. Used to assess easing/tightening in financial conditions.
QT (Quantitative Tightening): Quantitative Tightening. A policy by which a central bank reduces its balance sheet to absorb liquidity from markets, typically by stopping or reducing reinvestment of maturing securities.
Yen carry trade: A strategy of borrowing cheaply in yen and investing in higher‑yielding foreign assets (e.g., US Treasuries) to capture the interest rate differential. Profitability rises with wider US‑Japan spreads but carries yen appreciation risk.
Core‑core CPI: The consumer price index excluding food (excluding alcoholic beverages) and energy. By removing volatile categories, it is used—particularly by the BOJ—to gauge underlying inflation trends.
Business Conditions DI: The diffusion index from the BOJ’s Tankan survey that measures corporate sentiment. Calculated as the percentage of firms reporting ‘favorable’ minus those reporting ‘unfavorable’. Positive values indicate improving sentiment.
EURIBOR: Euro Interbank Offered Rate. A benchmark for interbank lending rates in the euro area, reflecting short‑term euro funding costs and linked to ECB policy rates.
This column was automatically generated by AI integrating data from the Federal Reserve Bank of St. Louis (FRED), the European Central Bank (ECB) Statistical Data Warehouse, Japan Ministry of Finance, and Bank of Japan statistics as a global fiscal and liquidity analysis resource. This is not a recommendation to buy or sell any financial instruments. Please make investment decisions at your own responsibility and consult professionals as needed.
