The Global Debt Shock
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Top Ten New York Times Bestselling Author
AI Summary. U.S. Treasury yields have surged to multi-decade highs across maturities, with the 30-year yield reaching levels not seen since 2007 and the 10-year approaching 5%. Rising oil prices are driving inflation expectations, pushing markets to price in near-certain Federal Reserve rate hikes within months.
Core argument: The 30-year Treasury yield reached its highest level since 2007 and the 10-year hit 4.93%, its highest since November 2023, as an oil-driven inflation surge pushed traders to price a Fed rate hike at 70% odds for next week.
Yields on US government debt rose to fresh multiyear highs — stoking demand for an auction of 30-year bonds. Treasury yields rose by five to 12 basis points across maturities, with the 30-year benchmark reaching levels last seen in 2007. The selloff lured investors to a $22 billion auction of 30-year bonds, which drew historically strong demand. The new securities were awarded at 5.308%, nearly three basis points lower than their yield in pre-auction trading just before the bidding deadline, meaning that bidders at higher yield levels missed out. Investor demand was so strong that a record low 2.2% of the sale went to Wall Street dealers. The auction’s 5.308% result was 2.7 basis points lower than the market level going in, the second-biggest negative gap on record in the past five years.AI Summary. The U.S. Treasury tripled its debt buyback program to $6bn in longer-dated securities, but markets sold off anyway, pushing 10-year yields to their highest level since 2023.
Core argument: The Treasury’s $6 billion buyback of 10–20-year securities — triple the $2 billion initially signaled — failed to suppress borrowing costs, with the 10-year yield rising 5 basis points to 4.83%, its highest level since 2023.
The US Treasury tripled the initial size of its next buyback of longer-dated government debt, in an announcement that was met with initial disappointment by investors. The Treasury Department said it will buy up to $6 billion of outstanding securities set to mature in the 10- to 20-year sector. It’s the first such operation under an expanded buybacks program that showcases Secretary Scott Bessent’s resolve to stem the recent rise in borrowing costs. The new figure is triple the amount initially communicated to investors of $2 billion. Treasuries extended an earlier decline after the release, with the yield on 10-year notes up about 6 basis points to 4.85% as of 11:35 a.m. in New York — their highest level since 2023.AI Summary. Japan's era as a reliable source of cheap borrowing is ending as interest rates rise, unwinding decades of low-rate financial assumptions.
Core argument: Japan’s decades-long role as the world’s low-cost funding source is unwinding as rising interest rates erode the carry-trade economics that made yen borrowing the default strategy across global markets.
For decades, finance has treated Japan as the exception to all rules. While the rest of the world surged and collapsed, Japan trudged on with minimal interest rates and sluggish growth — a safe place to borrow money cheap, through any number of elaborate trades. Last week’s news that Norway’s Norges Fund, one of the biggest sovereign wealth pools, was reallocating its fixed income portfolio in a way that likely shifts from Treasuries to Japanese bonds prompted speculation that more international money would move back to Tokyo and its newly competitive yields. Overnight rates are now forecast to go up by a full percentage point over the next 12 months, to 1.9%, following a shift in perception of the economy.AI Summary. Global institutional investors hedge only 41% of their foreign-currency exposure — the lowest rate since at least 2015 — leaving portfolios heavily exposed to dollar depreciation. A sudden shift in sentiment could trigger a self-reinforcing dollar selloff as unhedged holders rush to reduce exposure simultaneously.
Core argument: Global institutional investors hedged just 41% of their foreign-currency exposure as of June 30—the lowest share since at least 2015—leaving dollar-denominated assets acutely vulnerable to a sentiment-driven selloff.
Sift through the filings of pension funds and insurers around the world and one thing stands out: some of the biggest holders of US assets have little protection against a weaker dollar, leaving the currency at risk of steeper declines if sentiment suddenly turns. Across markets [Canada, Denmark, Australia, Taiwan, Japan and Finland for which data is available] investors hedged just 41% of their foreign-currency exposure as of June 30 — the lowest since at least 2015. While not a complete picture, it offers a glimpse into how the sudden rush last year to hedge against dollar losses triggered by President Donald Trump’s global tariff rollout has faded as the US currency slowly stabilized.AI Summary. The U.S. 10-year term premium has held flat over the past year and remains below those of Japan and Germany, indicating markets are not pricing in deteriorating U.S. fiscal credibility. Higher long-term rates reflect a shift in Federal Reserve rate expectations toward hikes rather than cuts, not fiscal stress.
Core argument: The New York Fed’s 10-year term premium has moved sideways over the past 12 months, indicating that rising long rates reflect shifting Fed rate expectations rather than deteriorating market confidence in U.S. fiscal sustainability.
The New York Fed’s measure of the US 10-year term premium has moved sideways over the past 12 months. On this measure, there has been no deterioration over the past year in how the market prices US fiscal sustainability or Fed credibility. The US term premium currently sits below the term premiums of Japan and Germany. This suggests that the market is less worried about the US fiscal situation compared with the fiscal situation in Germany and Japan. Put differently, the Fed went into 2026 expecting several cuts, and now the FOMC is leaning toward hiking. With this backdrop, it is not surprising that long rates are higher.AI Summary. A Treasury buyback program that briefly suppressed long-term government borrowing costs has been fully reversed by renewed global bond selling, with 30-year yields back at 5.27% and 10-year yields ~10 basis points higher than before the intervention.
Core argument: The 30-year Treasury yield has returned to 5.27% and the 10-year yield sits ~4.8% — more than 10 bps above pre-intervention levels — fully erasing the gains Bessent’s August 19 buyback expansion briefly secured.
The yields on the longest-dated US government bonds shot back to levels seen just before Scott Bessent shocked markets last month by expanding a buyback program in an effort to halt the rise. The gambit worked briefly, until the selloff that’s been sweeping through global markets pushed the government’s borrowing costs up again. By Tuesday, that drove 30-year Treasury yields to 5.27%, the level seen moments before Bessent announced the move on August 19. The 10-year yield — a crucial benchmark for the cost of all types of loans — is more than 10 basis points higher than it was then, at roughly 4.8%.AI Summary. Hyperscaler cloud revenue is growing rapidly (AWS +37%, Azure +43%, Google Cloud +82%), with combined capital spending and R&D rising from $460bn to $870bn over the last 12 months.
Core argument: Hyperscaler capital spending and R&D nearly doubled from $460B in 2024 to $870B over the trailing twelve months, driving S&P 500 earnings breadth well beyond levels that ISM manufacturing surveys alone would predict—evidence of a powerful AI-led trickle-down across sectors.
The Q2 earnings season was positive for hyperscaler annual revenue growth: AWS 37%, Microsoft Azure 43% and Google Cloud 82%. Rising revenue backlogs reinforce evidence of AI monetization: Google Cloud’s backlog increased $52B to $514B, and the AWS backlog rose to $496B, up 36% q/q. Earnings growth is also more broad-based than it was in 2024-2025 when AI was the primary driver. Earnings growth appears highly contingent on continued hyperscaler capital spending and R&D which rose from $460B in 2024 to $870B over the last 12 months. The share of S&P 500 companies with positive expected earnings growth is normally well-predicted by the ISM manufacturing survey. But since the AI capital spending boom began, earnings breadth has eclipsed the improvement in manufacturing surveys; this suggests a powerful trickle-down effect from hyperscalers to other sectors.