Khan Capitals | August 2026
Key Takeaways
- The global bond selloff reached multidecade milestones this week: the 30-year US Treasury yield touched 5.34 per cent on Tuesday, its highest since 2007, while 30-year gilts reached 5.79 per cent, a level last seen in 1998.
- This is a synchronised repricing, not an American one: Japan’s 10-year yield hit 2.95 per cent, its highest since 1996, and the 10-year German Bund crossed 3.25 per cent, its highest since 2011. Four major sovereign curves set multidecade records in the same week.
- The fiscal arithmetic is doing much of the work: the US posted a record $432 billion July deficit, 48 per cent larger than a year earlier, with customs revenue turning negative as tariff refunds flowed out and national debt approaches $40 trillion.
- The Treasury answered on Wednesday: it will at least double its long-end liquidity-support buybacks from $2 billion to $4 billion per operation from 9 September. The 30-year yield fell 14 basis points on the news, then gave back most of the move within hours.
- Equities noticed: the S&P 500 fell for three consecutive sessions from record levels as the long end repriced, and Wednesday’s buyback relief rally faded to a 0.2 per cent Dow gain by the close.
Part of: The Fed’s Regime Change – Khan Capital’s hub on the Fed’s 2026 regime change.
A Global Bond Selloff Measured in Decades
Bond markets spent this week doing something they have not done in a generation: setting multidecade yield highs in four major economies at once. The global bond selloff that had been building since late June accelerated on Monday and Tuesday, and by Tuesday’s close the milestones read like a history lesson. The 30-year US Treasury yield touched 5.34 per cent, a level last seen in 2007, before settling at 5.285 per cent. The 30-year gilt reached 5.79 per cent, its highest since 1998. Japan’s 10-year government bond yield climbed to 2.95 per cent, territory not visited since 1996, and the 10-year German Bund moved above 3.25 per cent for the first time since 2011.
Synchronisation is the detail that matters. A selloff confined to Treasuries can be explained by American fiscal politics or the Federal Reserve’s reaction function. A selloff that stretches from Tokyo to Frankfurt to London in the same week is telling investors something about the global price of long-term money. Governments everywhere are borrowing more, inflation has stopped falling in most of the developed world, and the buyers who absorbed duration through the 2010s, central banks above all, are no longer absorbing it.
The equity market took the point. The S&P 500, which set a record above 7,800 only a week earlier, fell for three straight sessions through Tuesday as the long end climbed, with rate-sensitive technology names leading the declines. Gold, which has been one of the year’s most reliable trades, slipped 0.5 per cent to $4,452 an ounce on Tuesday as real yields rose. When the discount rate moves this quickly, very little is immune.
The Fiscal Arithmetic Behind the Repricing
Start with the number that anchors the story. The US federal government ran a $432 billion deficit in July alone, a record for the month and the largest monthly shortfall since March 2021, according to the Monthly Treasury Statement. The gap was 48 per cent wider than July last year. Outlays of $766 billion set their own July record, while receipts fell slightly. The Committee for a Responsible Federal Budget confirms a $1.8 trillion deficit for the first ten months of fiscal 2026, and total national debt is approaching $40 trillion.
Inside the July statement sits a detail with its own market history. Customs duties were a net negative $8.55 billion for the month, the third consecutive negative reading, as $33 billion of tariff refunds flowed out following the Supreme Court’s February ruling that struck down the IEEPA tariff programme. A revenue line that contributed meaningfully to receipts in 2025 is now running in reverse, at precisely the moment spending is accelerating. Bond investors can forgive a deficit that is shrinking. What this week’s price action says is that they are no longer willing to fund a deficit that is compounding at these yields without additional compensation.
That compensation has a name: term premium, the extra yield investors demand for holding long-dated bonds rather than rolling short-term paper. Much of this year’s rise in long yields is a term premium story rather than a policy rate story. The federal funds rate has not moved since the Fed’s 9-3 July hold, and the front end of the curve has actually rallied since the September hike odds collapsed after tame July inflation. The long end is moving on supply, inflation uncertainty and the withdrawal of price-insensitive buyers, which is why it keeps rising even on weeks when the policy outlook softens.
Oil, Inflation and an Economic War
The inflation leg of the selloff runs through the Gulf. Brent crude traded above $91 this week as Washington escalated its confrontation with Iran, with President Trump declaring the US had entered an “economic war” and Treasury Secretary Scott Bessent promising the “toughest sanctions in history”, with details expected on Monday. Energy is the channel through which a geopolitical shock becomes an inflation expectation, and inflation expectations are the channel through which it becomes a bond yield. With US CPI still running well above the Fed’s 2 per cent target, a second-round energy shock is exactly what the long end does not want to see.
Wednesday morning added the British version of the same story. UK CPI rose to 2.9 per cent in July, a four-month high, driven by the 13 per cent increase in Ofgem’s energy price cap, with gas prices up 14.7 per cent, the largest rise since October 2022. Core inflation printed 2.6 per cent, slightly hotter than forecast. For a gilt market already contending with the Burnham government’s borrowing plans, an energy-led inflation rebound was an invitation to push 30-year yields to levels last seen when the Bank of England had been independent for barely a year.
Japan Stops Anchoring the World
The quietest part of this week’s move may be the most structurally important. For three decades Japanese yields anchored the bottom of the global term structure, and Japanese institutions exported trillions of dollars of savings into Treasuries, gilts and Bunds because domestic bonds paid nothing. That regime is ending. The 10-year JGB at 2.95 per cent, with the 30-year above 4.1 per cent, changes the arithmetic for the world’s largest pool of duration-hungry capital. A Japanese life insurer can now earn a real yield at home, currency-hedged, for the first time in a generation.
Markets are also pricing a growing probability of another Bank of Japan rate hike, barely three weeks after the joint yen intervention reset the currency debate. Every basis point JGBs rise is a basis point of repatriation pressure on every other bond market. This is the mechanism that turns a Japanese domestic story into a global one, and it is why the JGB milestone deserves more attention than it is getting in mainstream coverage of the selloff.
The Milestones in One Table
| Market | Instrument | Peak this week | Last seen |
|---|---|---|---|
| United States | 30-year Treasury | 5.34% | 2007 |
| United Kingdom | 30-year gilt | 5.79% | 1998 |
| Japan | 10-year JGB | 2.95% | 1996 |
| Germany | 10-year Bund | 3.25%+ | 2011 |
| United States | 10-year Treasury | 4.67% | 18-month highs |
Wednesday’s Answer: The $4 Billion Buyback
By Wednesday morning the pressure had produced a response. The Treasury announced it will at least double the maximum size of its liquidity-support buybacks in the two longest maturity buckets, from $2 billion to at least $4 billion per operation, covering the 10-to-20-year and 20-to-30-year sectors. The upsized operations begin on 9 September and run to the next quarterly refunding on 4 November. The stated rationale is liquidity support. The unstated one, as the timing makes obvious, is that the long end of the world’s benchmark bond market had begun to trade in a way the issuer could no longer ignore.
The initial market reaction was everything Secretary Bessent could have wanted. The 30-year yield fell from a 5.337 per cent morning high to 5.192 per cent, a 14 basis point round trip, and the 10-year eased to 4.64 per cent. The Dow opened nearly 200 points higher and was up more than 360 at its best. Commentators reached for the historical parallel immediately: buying long-dated paper while issuing at the front end is, in effect, a fiscal echo of the Fed’s 2011 Operation Twist, a comparison Bloomberg drew within hours.
Then the move faded, and the afternoon’s other release helped it fade. Minutes of the Fed’s July meeting, published at 2pm, showed the hawkish case extending well beyond the three dissenters: many participants assessed that further tightening would likely be necessary if inflation did not decline, and Chair Warsh even floated cutting the FOMC calendar from eight meetings a year to six. A central bank still debating hikes is no friend of a duration rally. By the close the Dow’s gain had shrunk to 0.2 per cent and long yields had recovered much of their drop. The scepticism is easy to reconstruct. A $4 billion operation is a rounding error against a market where a single quarterly refunding auctions tens of billions of long-dated paper, and against a deficit running at $1.8 trillion for the fiscal year to date. Buybacks funded by bill issuance do not reduce the debt; they shorten its maturity, which is a duration transfer, not a fiscal improvement. The gesture matters as a signal that the Treasury is watching. Whether it matters as a flow is a different question, and Wednesday afternoon’s price action suggests investors know the difference.
What the Long End Is Actually Saying
It is tempting to read 5.3 per cent 30-year yields as a recession signal or a crisis signal. The credit market disagrees: investment grade spreads remain near record tights, equity indices are within a few per cent of records, and the dollar has been orderly. What the long end is pricing is not distress but a regime: structurally larger deficits, inflation that settles nearer 3 per cent than 2, central banks that have stopped buying, and a marginal buyer, whether a pension fund, a Japanese lifer or a hedge fund basis trade, who demands to be paid for all three.
That regime reading also explains the odd coexistence of a hawkish long end with a dovish front end. Eight days of data in mid-August halved the odds of a September rate hike, and those odds have not recovered. The curve is steepening from both ends: the market doubts the Fed will hike into a softening consumer, and simultaneously doubts that anyone will fund 30-year paper at old prices. A steepener driven by term premium rather than growth optimism is historically an uncomfortable backdrop for long-duration equities, which is precisely the rotation equity investors spent this week relearning.
Scenarios for the 30-Year
| Scenario | 30-year range | What has to happen |
|---|---|---|
| Bull (yields fall) | 4.75% to 5.00% | Oil retreats on an Iran de-escalation, core inflation resumes falling, buybacks plus soft data revive long-end demand |
| Base | 5.00% to 5.40% | Deficits and supply keep term premium elevated; yields chop at multidecade highs without a disorderly break |
| Bear (yields rise) | 5.40% to 5.75%+ | Sanctions push oil through $100, JGB repatriation accelerates, a weak auction forces the Treasury into larger interventions |
Investor Implications
Equities. A term premium driven steepening compresses the equity risk premium without the growth offset that usually accompanies rising yields. The most exposed cohort is long-duration growth: companies valued on cash flows a decade out, which is why technology led this week’s declines while the S&P 500 fell for three sessions. Rate-sensitive sectors carrying visible debt loads, from utilities to REITs, face a higher refinancing hurdle, while banks with well-matched books benefit from steeper curves. Earnings strength still matters, but this week showed the multiple is now negotiable in a way it was not in July.
Fixed income. Yields at multidecade highs are, mechanically, the most attractive entry levels in a generation for buy-and-hold investors, and the worst possible environment for leveraged duration longs, and both statements are true simultaneously. The distinction is horizon. A 5.3 per cent 30-year locks in returns that beat most long-run equity forecasts if inflation settles near 3 per cent, but the path there can involve significant mark-to-market pain, as anyone who bought the 2023 highs remembers. The front end offers most of the yield with a fraction of the duration risk, which is why demand keeps clustering there and why the Treasury’s buyback operation targets the buckets nobody wants.
Cross-asset. The correlations that matter now run through Tokyo and the oil market. Rising JGB yields pressure every bond market via repatriation and pressure the yen carry complex via funding costs. Oil above $90 keeps the inflation leg of the selloff alive and ties bond risk to headlines from the Gulf. Gold’s stumble on rising real yields is a reminder that even the year’s best haven is not immune to the discount rate. The one asset class enjoying the chaos is cash, which at current front-end yields is being paid handsomely to wait.
What to Watch
- 24 August: Washington’s Iran sanctions package is due; the oil market’s reaction feeds directly into the inflation leg of the bond story.
- 27 to 29 August: the Jackson Hole symposium, Chair Warsh’s highest-profile platform since the July dissents.
- 28 August: July core PCE, the Fed’s preferred inflation gauge, alongside the BLS payrolls benchmark revision.
- 9 September: the first upsized $4 billion long-end buyback operation; an undersubscribed offer list would tell the market the liquidity problem is worse than advertised.
Conclusion
Multidecade yield highs in four markets in one week is not a coincidence; it is a verdict. The global bond selloff is repricing the cost of long-term money for a world of permanent deficits, sticky inflation and vanishing price-insensitive buyers, and it is doing so in an orderly, deliberate, global way that makes it harder to dismiss than any single country’s fiscal scare. The Treasury’s buyback expansion acknowledges the problem without solving it: $4 billion operations do not absorb $1.8 trillion deficits. Until the fiscal arithmetic changes, or the oil premium comes out, or a growth shock forces the duration bid back, the burden of proof now sits with anyone arguing the long end is done rising. This week, for the first time since 2007, the 30-year Treasury asked to be taken seriously. The answer will shape every other asset price into year-end.
Frequently Asked Questions
Why are long-term bond yields rising around the world?
Three forces are compounding: governments are issuing record volumes of debt, with the US running a $1.8 trillion deficit in ten months; inflation has stopped falling towards targets, with oil above $90 adding fresh pressure; and the price-insensitive buyers of the 2010s, chiefly central banks, are no longer absorbing supply. Investors are demanding a higher term premium to hold long-dated paper, which pushes yields up even without policy rate changes.
What is a Treasury buyback and why did it move markets?
The Treasury periodically repurchases older, less-traded bonds to support market liquidity, funding the purchases with new issuance. On 19 August it doubled its long-end operations from $2 billion to at least $4 billion each. Yields fell initially because the announcement signalled the issuer is monitoring long-end stress, but the move faded because the amounts are small against the scale of the deficit and the operations shorten the debt’s maturity rather than reducing it.
Why do rising bond yields hurt equity markets?
Long-term yields set the discount rate applied to future corporate cash flows, so higher yields mechanically lower the present value of earnings, with the largest effect on growth companies whose profits sit furthest in the future. Higher yields also offer investors a competitive risk-free return, raising the bar equities must clear. This week the S&P 500 fell for three sessions as the 30-year yield hit 19-year highs, led by technology.
Are bond yields at these levels an opportunity or a warning?
Both readings have evidence. A 5.3 per cent 30-year Treasury offers the highest starting yields since 2007, which historically anchors strong long-run returns if inflation stabilises. But the same level warns that investors doubt the fiscal trajectory, and leveraged holders face mark-to-market risk if the selloff extends. The answer depends on horizon, leverage and inflation expectations rather than on the yield level alone.
Sources: CNBC, Bloomberg, US Department of the Treasury, Treasury Fiscal Data, Committee for a Responsible Federal Budget, Office for National Statistics, CNN Business, CNBC (buybacks).
Related Reading: The policy backdrop to this week’s move runs through the Fed’s 9-3 July hold and its triple dissent and the subsequent collapse in September hike odds. The UK leg of the selloff extends the story we covered in UK gilt yields above 5 per cent under Prime Minister Burnham. For the widening gap between rates and credit, see credit spreads at record tights, and for the Japanese anchor breaking loose, the joint yen intervention. For the fundamentals, start with what the term premium is and why it drives long yields and duration, explained. The consumer side of the week is covered in retail earnings week. The unlikeliest beneficiary of the buyback was crypto: see the bitcoin short squeeze. The sanctions package that followed, and the oil market’s refusal to react to it, is covered in the economic D-Day announcement. The stage all of this sets is examined in our preview of Warsh’s first Jackson Hole keynote. The sequel, in which hot PCE and Warsh’s Jackson Hole warning put the hike back on the table, is in the day the tightening question reopened. The metal’s answer to all of it is charted in the gold price rally. For the latest, see Broadcom AI revenue tripled to $16.7 billion. For the US labour data now driving yields, see the August jobs report. The intervention has since tripled; see the $6 billion Treasury buyback escalation.
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