Is the global bond market storm not over yet? IMF sounds the alarm: debt and inflation risks are intensifying, and yields may surge "disorderly"

Title context: Is the global bond market storm not over yet? IMF sounds the alarm: debt and inflation risks are intensifying, and yields may surge "disorderly" Text: The International Monetary Fund (IMF) warned on Tuesday that global government bond yields could rise in a disorderly mannerresurgent inflation, climbing debt and AI-related borrowing are simultaneously squeezing the sovereign debt market. The judgment came from the IMF's Global Financial Stability Report (GFSR) released in Bangkok that day, as more than 18,000 delegates gathered in Thailand for this week's IMF and World Bank annual meetings. Government bond yields in several developed economies have risen to multi-decade highs. The Middle East conflict has pushed up energy costs, while markets also expect central banks to tighten monetary policy to curb re-emerging inflation. On October 7, the 10-year U.S. Treasury yield touched 5.362% intraday, the highest since April 2002; the 30-year rose to 5.731%, also back to its highest since 2002; the policy-sensitive 2-year rose 2.7 basis points to 4.818%. Europe and Japan are under simultaneous pressure: the French 10-year government bond yield surged nearly 14 basis points in a single day on October 7 to 4.889%, and stood at 4.896% on October 12; the U.K. 10-year was at 5.439%, with its 30-year yield previously breaking above 6%, the highest since 1998; the German 10-year was at 3.473%; the Japanese 10-year returned to around 3.1%, sitting at a 30-year high since 1996. October 12 coincided with the U.S. bond market being closed for a holiday. After trading resumed during Asian hours on October 13, the 10-year U.S. Treasury yield fell 5 basis points to 5.19%, the dollar index dropped 0.2% to 102.39, and Brent crude oil futures fell 1.4% to $105.20 per barrel. Debt and refinancing risk: old debt must roll over at new rates The IMF attributed the bond market's vulnerability to two overlapping variables. The report said that high debt burdens and the refinancing needs of maturing debt are making the bond market "vulnerable to more frequent fiscal and inflation shocks." The IMF warned last week that global public debt is already near its highest level since World War II and will soon exceed 100% of global GDP. According to IMF fiscal monitor data, global public debt was already close to 94% of global GDP in 2025, and the IMF expects it could reach 100% by 2029. The real pressure comes from refinancing: after old debt matures, new debt must be issued at current market rates, and if high rates persist for longer, governments' average funding costs will gradually rise. The Institute of International Finance (IIF) estimates that advanced economies paid more than $3.3 trillion in interest over the past year on government bonds traded in international markets. The supply side is also adding pressure. The U.S. Treasury raised its third-quarter net financing need to $739 billion. The IMF therefore urged debt managers in various countries to extend duration, and warned that large-scale replacement of long-term debt with short-term borrowing would exacerbate rollover risk. "Given the foundational importance of sovereign bond markets, the implications could be severe," the IMF said in the report. A sharp rise in yields would depress valuations across asset classes through higher discount rates, including AI-related assets; at the same time, government bonds held as collateral would also face value erosion. AI debt issuance intensifies risk: from less than 1% to a new competitor at 10% The report listed AI company borrowing as a new source of bond market pressurethey are competing with governments for the same pool of investors. According to IMF data, hyperscalers' share of global investment-grade bond issuance has risen from less than 1% in 2024 to 10%. Tech giants such as Google parent Alphabet and Meta, along with AI labs, have borrowed hundreds of billions of dollars this year. More detailed scale data comes from statistics by other institutions. So far in 2026, AI-related debt issuance is close to $500 billion; five hyperscalersAmazon, Alphabet, Meta, Microsoft and Oraclehave collectively issued about $200 billion or more, including about $54 billion by Amazon, about $31.5 billion by Alphabet, about $30 billion by Meta, and Oracle in the $18 billion to $30 billion range; SpaceX completed a $25 billion bond issuance in June, which was oversubscribed. After its latest issuance round, Bank of America raised its 2026 hyperscaler debt forecast from $140 billion to $175 billion; Morgan Stanley expects global AI-related debt issuance of about $570 billion that year; Goldman Sachs expects this group to issue about $250 billion in 2026 and about $400 billion in 2027, with AI-related debt potentially exceeding $1 trillion annually over the long term. Marc Seidner, chief investment officer of non-traditional strategies at PIMCO, said AI-related issuance "much of it is longer-dated and has grown to the point where it competes with government bonds for investor capital, even if it does not appear to be the dominant driver of yields." Pressure is also beginning to show in issuance pricing. According to Apollo statistics, the subscription multiple for hyperscaler bonds has fallen from 5 times in February to less than 2 times in July; new AI-related bond issuance offers a concession of about 12 basis points, compared with an average of about 2.5 basis points in the investment-grade market. The credit default swap (CDS) market has tightened in tandem: Broadcom's 5-year CDS hit a record 136 basis points, Oracle's 5-year implied default rate rose above 20%, and SpaceX's was about 16%. Circular financing: $300 billion in equity, $650 billion in debt versus $1.4 trillion in revenue commitments The IMF also sounded the alarm on "circular" financing arrangements among AI companies. The report disclosed that since 2023, 14 publicly disclosed transactions have channeled about $300 billion in equity (led by hyperscalers) to financially weaker AI companies, plus $650 billion in debt; in exchange, investors obtained $1.4 trillion in "future revenue commitments," in the form of service purchases or chip orders. Jason Wu, assistant director of the IMF's Monetary and Capital Markets Department, said at a Tuesday press conference that what makes this batch of transactions different is those future revenue commitments, "hence the circularity." He described a possible triple blow arriving at once: "If AI monetization runs into problems, equity investments would be impaired, debt could become difficult to repay, and future revenue commitments might not be honored." The report pointed out that financing and revenue commitments of such scale are concentrated in a handful of AI companies. Wu said that because of this concentration, "some companies and nodes are especially exposed"; "if these entities run into problems, the circularity would bring risk to the market." Hedge funds: leverage in the U.S. Treasury market, an amplifier of risk appetite Beyond corporate issuance, leveraged positions by hedge funds are another amplifier flagged by the IMF. Citing Federal Reserve data, the IMF noted that hedge funds' share of the U.S. Treasury market has risen from about 4% in 2022 to about 9% in 2025, mainly through highly arbitrage-driven strategies. The report said some leveraged Treasury basis trades have already been unwound, and no obvious pressure has appeared in the repo market, but residual leverage still leaves the market "vulnerable to disorderly unwinding." Hedge funds have become important buyers of U.S. Treasuries. According to Office of Financial Research (OFR) data, by the end of 2025, hedge funds held about $2 trillion in cash Treasuries, accounting for 7% of the $28.9 trillion in tradable Treasuries, a record high and nearly triple the level five years earlier. Fed data show that domestic hedge funds remained net buyers in the first half of 2026, buying $60.6 billion net in the second quarter and $26.4 billion in the first quarter, totaling about $87 billion for the half-year. Such positions rely on repo financing for leverage. Don Steinbrugge, founder and CEO of Agecroft Partners, told CNBC that basis trades have thin margins, with leverage often at 20 times or even higher. He cited March 2020: at that time, Treasury liquidity deteriorated sharply, leveraged funds were forced to unwind quickly, creating a cycle of margin calls, forced selling and intensified volatility. Morgan Stanley estimates that leveraged basis trade positions have fallen by about one-fifth this year to $1.2 trillion. Caio Ferreira, deputy chief of the IMF's financial regulation division, explained the source of concern: hedge fund leverage is rising, and positions are increasingly overlappingmultiple funds hold the same trades, so once they unwind collectively, the shock could be amplified. Three major risks, and the only exception In the GFSR framework, an AI-related asset correction, a sharp rise in sovereign bond yields and cyber threats are listed as the three prominent risks. The report said these risks by themselves may not necessarily threaten financial stability, but if amplified by financial vulnerabilities, they could evolve into systemic risk. Stress tests offer limited buffers. The report showed that under adverse scenarios such as an energy price shock, rising inflation and bond yields, and an AI-led market adjustment, banks overall remain resilient, but banks assessed as having "weak" capital levels account for 22% of total global banking assets, up from 18% in 2025. On liquidity, the IMF confirmed that liquidity indicators in the United States, Europe and the United Kingdom remain stable, and market functioning "has been orderly." Japan is the exception: since the end of yield curve control (YCC), liquidity in the Japanese government bond market "has continued to deteriorate," with yield volatility rising. According to The Paper, Japanese sovereign yields had just recorded an unprecedented fifth consecutive quarter of double-digit gains. Supply pressure has left traces in auction data. The U.S. Treasury auctioned $39 billion of 10-year notes on October 7, with a high yield of 5.300% (compared with 4.834% in September), the highest high yield for any 10-year note auction since November 2000. How the market sees it Athanasios Vamvakidis, deputy director of the IMF's Capital Markets Department, put it more bluntly: since the previous report was released in April this year, the rise in bond yields is "clearly" the biggest change in the risk outlook; compared with an AI market correction, a sharp rise in sovereign bond yields is seen as a more direct and more urgent threat. Interpretations among market institutions diverge. Bank of America's Michael Hartnett offered a counterintuitive inference: the most favorable event for risk assets before year-end might be a Fed rate hike in Octoberusing a proactive tightening to contain an uncontrolled rise in long-end yields. Morgan Stanley's Michael Wilson argued that the bond market is already "hiking" for the Fed, with the 10-year U.S. Treasury yield up about 120 basis points since February, financial conditions significantly tightened, and a mild CPI this week would ease long-end pressure. Goldman Sachs trading desk feedback said the speed of the rise in rates is more unsettling than the terminal level, and oil and rates, once mirror assets, have decoupled. According to the CME FedWatch tool, the probability of the market pricing in no move at the October 28 meeting is 80.6%, down from 82.3% last Friday. The IMF's World Economic Outlook released the same day forecast global real GDP growth of 3.1% in 2026 (above the July forecast of 3.0%) and 3.4% in 2027.