Newsletter · · Ashutosh Agarwal

Government Bond Yields Break Higher Across the US, Japan, Germany and the UK - The Long End & Fiscal Supply - Week of September 8, 2026

The Long End & Fiscal Supply for the week of September 8, 2026. Podcast synthesis on the synchronized global breakout in long-dated government yields, the verdict that Scott Bessent's Treasury buyback failed, the theory that the buyback is a stealth rate hike, Japan's 10-year at 3 percent for the first time since 1996, and the bond bulls who came back with real arguments.

The Long End & Fiscal Supply

Week of September 1–8, 2026: Government Bond Yields Break Higher Across the US, Japan, Germany and the UK

Two weeks ago the story was one country's problem: the U.S. Treasury secretary stepping in to buy back long bonds because the 30-year had touched a level Washington didn't like. This week the story stopped being American. Long-term government borrowing costs broke out to multi-decade highs almost everywhere at once, with the U.S. 10-year pushing toward 5%, the German 10-year at a 15-year high, the UK's 30-year near 6%, and, the one that made rates people sit up, Japan's 10-year hitting 3% for the first time since 1996. And the verdict came in on Scott Bessent's rescue: it didn't work. The market handed the money back, then pushed yields to fresh highs anyway. This was also the first week in a while where the bond bulls got a real hearing, so we build out both sides.

TL;DR

  • The sell-off went global and synchronized. The U.S. 10-year broke above 4.75% to roughly 4.8% (a 19-month high, closing in on the 2007 peak just under 5%), the 30-year hit ~5.28% (also a post-2007 high). But the tell was overseas: Japan's 10-year touched 3% for the first time since 1996, German Bunds hit a 15-year high at 3.33%, and UK gilts reached their highest since the 2008 crisis. When every rich country's long end sells off together, it's not about any one government's spending, it's about the world running short of buyers for long-term debt.
  • Bessent's buyback flopped, and the pros said so out loud. The long end crept back to where it started within days and then broke higher. Legendary investor Stanley Druckenmiller, in a public op-ed, called the operation "not liquidity management. It was price management," and warned that once the market believes Treasury is defending a price, "every rise in yield becomes a test of official resolve, and the operations must grow to survive the tests." An Odd Lots guest who researches Treasury buybacks put it plainly: "even the mighty U.S. Treasury Department is not as powerful as bond markets when it comes to setting yields."
  • The provocative new theory: the buyback is a stealth rate hike. The Wall Street Skinny, whose host personally questioned Bessent at an event this week, argues the media has it backwards. By buying up illiquid old long bonds and funding it with new short-term issuance, Treasury is quietly shifting the government's debt to the front end and adding long-duration supply the market must absorb, which pushes long yields up, "doing Kevin Warsh's dirty work for him" at a moment the Fed can't hike itself.

What's new

1. The frame of the week, a synchronized global breakout

Saxo Market Call, "Global yield breakout dominates market focus" (Sep 1), with sell-side strategist John J. Hardy of SaxoStrats.

Hardy laid out the levels that made this a global event, not a U.S. one. The U.S. 10-year "finally broke above that 4.75 percent level that was serving as resistance," reaching a 19-month high with the multi-year peak (from 2007) "just below 5 percent." But the action was overseas: "the major 10-year yields going to new highs since the EU sovereign debt crisis. So a 15-year high-ish in German bunds… 3.33 percent on the German 10-year. And the Japanese 10-year hitting that nominal 3 percent level overnight." His read on Bessent's operation: "a shot across the bow that it does not like higher… longer term yields." Why it matters: when the U.S., Germany, Japan and the UK all break out together, the driver has to be something bigger than any single country's politics, a worldwide shortage of appetite for long-dated government debt.

2. The verdict on the buyback, it failed, and the desk-quality voices are blunt about it

Odd Lots, "What's Behind the Big Surge in US Government Bond Yields" (Sep 3). The guest is a Stanford economist and market-structure expert who researches Treasury buybacks with New York Fed economists Michael Fleming and Orr Shachar.

The clearest expert decode of the week. On why yields are up: "foreign central banks have had all that they need and they're not buying more… it's mostly domestic discretionary investors that are being asked to take this additional supply and they just need more compensation." On Bessent's motive, he cited liquidity, but the guest wasn't buying it: "he seemed to think that yields were too high irrespective of liquidity concerns… he was signaling to the market his belief that Treasury yields were too high." And the result: "the market reacted quickly to that news, it reversed itself pretty quickly afterwards." His bottom line on the limits of intervention, invoking Bessent's own history attacking the British pound alongside George Soros in 1992: "even the mighty U.S. Treasury Department is not as powerful as bond markets when it comes to setting yields… if markets decide that yields are going to be at 6 percent, the U.S. Treasury Department is not going to be able to have a strong say in that." He also flagged why the Fed won't ride to the rescue with yield-curve control: "The Fed is studiously avoiding fiscal dominance… The last time that happened, it was a very acrimonious end in the 1950s with the Fed Treasury accord. People think the word accord means they had a good agreement. It actually means they had a really, really rough argument." Why it matters: the person who literally studies these operations for a living says this one was aimed at price, not plumbing, and that price is not something Treasury can win.

The same week, hedge-fund veteran and current wealth-manager Peter Boockvar, CIO of One Point BFG Wealth Partners, drove the point home on The KE Report (Sep 5). Bessent is "fighting a market that is much bigger than he is… his experience in the hedge fund world of foreign exchange intervention never working on a sustainably lasting basis. Maybe he should have thought that through." And the trap: "once you do it, the market's going to test you. And you either just say, okay, you're going to walk away… or are you going to get bigger? And Bessent has already threatened to get bigger." He quoted Stanley Druckenmiller's public op-ed, Druckenmiller being the man Warsh once worked for, that the move "was not liquidity management. It was price management," and that "once markets believe Treasury is defending a price, every rise in yield becomes a test of official resolve, and the operations must grow to survive the tests."

3. The reframe of the week, the buyback might be a hike in disguise

The Wall Street Skinny, "Everyone is WRONG about Scott Bessent's Treasury Intervention" (Sep 4). Hosts Jen and Kristen; Jen questioned Bessent directly at the Charlotte Economic Club this week, so this is practitioner commentary with a primary-source encounter behind it.

This is the most original take of the week, and it's worth walking through. The mechanics first: the bonds Treasury buys back are old, deeply out-of-favor long bonds, for example the 1.375%-coupon August 2056s issued during COVID, now trading around "46 cents on the dollar" because rates have sold off 400 basis points since. Nobody wants them; they clog up dealer balance sheets. Treasury takes them off dealers' hands and funds the purchase by issuing new debt "in liquid points on the curve. So wherever everyone wants to buy, if it's T-bills, if it's twos, if it's fives or tens, we'll issue the liquid stuff." Here's the twist: "if you swap them out for stuff that has duration, like two-year notes and five-year notes, all of a sudden, all else being equal, when you have more supply of something and the market has to buy it, what's the market going to demand? Higher yields." Jen's conclusion: "I think Scott Bessent is doing Kevin Warsh's dirty work for him," engineering higher rates the Fed wants but can't deliver, because Warsh's whole credibility rests on not using the Fed's balance sheet ("his credibility hinges on him not using the Fed's balance sheet pretty much at all costs"). The crucial caveat she flags herself: if Treasury instead funds the buybacks out of its checking account at the Fed (the Treasury General Account), "we now have something that looks much more like quantitative easing. And that completely undoes all of the logic." Why it matters: if she's right, the operation everyone reads as yield suppression is actually adding to the very selling pressure driving long yields up, and it reframes the "two arms of Washington fighting" story as the two arms quietly cooperating. (She also noted the dark-comedy moment: asked about supporting bonds, President Trump said "there's always the military." An Odd Lots host made the same joke, that James Carville's famous bond vigilantes might now "be bombed into submission.")

4. We finally got a read on Warsh's Jackson Hole speech, and it points to a hike

Odd Lots, "Adam Posen Thinks Things Could Get Very 'Messy' for the Fed" (Sep 1), with Adam Posen of the Peterson Institute for International Economics, an economist and former policymaker.

Posen graded Warsh's debut speech as Fed chair a "B-" but read its structure as an unmistakable signal: "there were four sections to the speech. And the fourth section basically does the litany of the reasons you would think inflation is not going to stay stable or it's going to persist… therefore, we have a tight new guise." In other words, Warsh implicitly teed up a rate hike. Posen, who's been "urging them to hike for a while… I think inflation's real," welcomed it, and credited Warsh with cleaning up loose ends (stating clearly that the target is core PCE at 2%). But his warning was about credibility: Warsh "seems to be still… trying to maximize his last minute discretion… reserving the right to make up his mind at the last minute," and "it was a long speech for someone who says they don't like forward guidance." His bigger red flag was fiscal dominance, the risk that a Treasury desperate to sell bonds leans on the Fed: the right answer from a central banker, Posen said, is to tell the Treasury secretary "I'm here to help you sell U.S. bonds and your successors sell U.S. bonds… and that means I don't do cheating and manipulation now." Why it matters: the most likely path is now a Fed raising the short end into a Treasury trying to lower the long end, the tension at the heart of this whole story, and the source of most of the volatility.

5. Japan is the crack in the dam

Unhedged, "Warsh and peace" (Sep 1), FT commentary, echoed across The Bitcoin Layer (Sep 1, Nik Bhatia), The Loonie Hour (Sep 4, Keith Dicker of IceCap, asset manager), and Tom Bilyeu's Impact Theory (Sep 6).

The single most-cited overseas fact of the week: Japan's 10-year yield hitting 3% for the first time since 1996. Unhedged framed the whole global move in one line, "governments are borrowing too much damn money," and investors are refusing to buy without higher rates. Why Japan matters so much: it has been, in Boockvar's phrase, "the foot on the neck of global interest rates for a long time." For decades Japan pinned its own yields near zero (yield-curve control) and its investors exported the resulting cheap money into every other bond market. As Japanese yields rise, that anchor lifts, and Japanese money has less reason to leave home. The Loonie Hour rounded out the global picture: Japan's 10-year at 3% (highest since 1996), the UK's 30-year gilt at its highest since 1998, and France's 30-year at its highest since the financial crisis. Why it matters: Japan is the marginal supplier of the world's cheap long-term capital. When its own long end breaks, everyone's does.

6. The UK is the canary, and it now has a political trigger

The Rest Is Money, "Why is the US debt crisis a big problem for Burnham?" (Sep 6), journalist commentary from Robert Peston and Steph McGovern.

The clearest scale-of-the-problem segment of the week. UK 10-year borrowing costs are "up to five and a quarter percent" and the 30-year is "not that far off, six percent," levels "we have not seen for decades," with new Prime Minister Andy Burnham's spending ambitions (council housing, nationalizations, social care) read by markets as a big borrowing appetite. On the U.S., Peston did the almost-incomprehensible math: between rolling over maturing short-term bills, refinancing longer-term debt, and funding new deficits, "the American government has to refinance every year something like $30 trillion… sort of £2.5 trillion every month." And on the competition for that money, a concrete number: per Goldman Sachs, "roughly a quarter of… US gross investment grade debt issuance this year has come from AI-related companies," hyperscalers and data-center financiers soaking up capital that used to fund governments. Peston's tail risk is a "twin crisis," an AI equity-and-debt bust colliding with a sovereign-debt scare, though he stressed he is "not… forecasting Armageddon tomorrow." Why it matters: the UK keeps being the first place the global buyer strike shows up in the price, and this week it acquired a fresh domestic catalyst.

The debate

Unlike recent weeks, the bulls showed up in force, and with real arguments, not just hope. So both sides get built out.

The bears (this is structural, and the buyer base is broken):

  • Luke Gromen and Lyn Alden on BTC Sessions (Sep 4) delivered the sharpest structural case. Alden's framing: this is "the softest possible version" of yield-curve control, and the odd thing is Bessent moved "prematurely… there was no real crisis in the bond market." She invoked the Streisand effect, "more people wonder if there's a problem because he's focusing on it so much." Gromen's contribution was the standout idea of the week: the "dog that didn't bark." Historically, when the 10-year hits 5–5.5%, "pensions and insurance companies will buy it all. They'll buy everything out there. And yet they didn't." His explanation: America's long-term buyers of last resort, life insurers and pension funds, are "jammed up in private credit" (citing work that private credit is 11–16% of U.S. life-insurance assets) and can't rotate into Treasuries without selling private-credit holdings at a loss they can't absorb. "The fact that they're not doing that tells you that the problem in private credit is way worse than anybody thinks." Layer on Fitch's projection of a 7.4% deficit this year and next (versus Bessent's stated 3%-by-2028 goal) and interest-plus-entitlement obligations at "105% of receipts… growing 2x receipts," and Gromen argues Bessent had no choice but to intervene early. This is the most important new bear idea of the week: the reason the long end can't find a bid may be a hidden solvency problem in private credit, not just too much supply.
  • Peter Boockvar (The KE Report, Sep 5) argues the 40-year bond bull market is simply over, killed by two events: the 2021–22 inflation shock and the most aggressive Fed response since the 1970s, and then the Bank of Japan ending yield-curve control in summer 2023. The upshot: "central banks or at least the Fed is just less relevant… the market has essentially taken that responsibility from them and pricing rates, regardless of what the inputs are."
  • The gold and hard-money desks piled on. Steve Hanke of Johns Hopkins (WTFinance, Sep 4) called Bessent's efforts a "yield curve control" attempt "lacking credibility," pointing to a doom loop where high yields raise deficit-financing costs, with 35% of personal income-tax revenue already going to interest. John Rubino (The KE Report, Sep 3) called the Treasury-pushing-down / Fed-pushing-up setup "total incoherence… a clear admission of failure in U.S. monetary policy." Peter Schiff (The Peter Schiff Show, Sep 6) flagged the 10-year at 4.81% and 30-year at 5.28% as fresh post-2007 highs and "every buyer became a seller," with Japan selling Treasuries for years to defend the yen.

The bulls (the panic is the opportunity):

  • Jared Dillian of The Daily Dirt Nap on Monetary Matters (Sep 3), a newsletter writer and ex-Lehman trader, was the loudest voice on the other side: "I'm insanely bullish [on bonds]." His case is part sentiment, part arithmetic. Sentiment: "there is a mind virus going through people in the market. People believe that deficits are out of control… We are really back to where we were in the late 70s when people were calling bonds certificates of confiscation," and with Ray Dalio writing bond warnings and the global sell-off on the Bloomberg front page "every single day," the contrarian in him goes the other way. Arithmetic: "the deficit is $2 trillion… but it's only 6% of GDP. And back in 2010, it was 12% of GDP. And people showed up at the auctions. The auctions had bid to covers of three or higher." His key point is that everyone obsesses over supply and forgets demand: "if we had a big risk off event… if stocks were down 20%, trust me, interest rates would be much lower." He has personally "moved a huge portion of my money into bonds in the last month," a three-to-five-year hold, and thinks "5.2, 5.3 on 30 years is an incredible deal… 4.7 on 10s is an incredible deal." (He also noted the whipsaw risk cutting his way: the next payroll estimate was just 55,000 jobs, yet the market was pricing a 66% chance of a hike, "It's a madness.")
  • Kurt Lewis of Piper Sandler (What's Next For Markets, Sep 6), a sell-side analyst, made the most rigorous "it's not a fiscal crisis" argument. His tell is the swap spread, the gap between Treasury yields and interest-rate swaps, which strips out interest-rate risk and leaves you with pure supply-versus-demand for the bond itself. "If demand is falling relative to supply in long treasury securities, I should see… the spread between treasury yields and swaps widen out. That's not what we're seeing right now. We're seeing it actually edge down." Same message from the curve: if investors feared fiscal blow-up, they'd demand extra yield at the very long end, steepening the 10s-to-30s slope, but "it's not historically high and it's not drifting higher." His conclusion: "it's obvious that we have a problem, but it is not obvious that people are really trying to position themselves for that problem right now." That said, he's no bond bull on level: he thinks fair value is ~4.5% because the neutral rate is now above 3% and term premium is 75–125bp, so "the pressure is upward, not downward," just for boring macro reasons, not a debt panic.
  • The most contrarian read came from the host of Eurodollar University (Sep 2), an analyst who argues there is no buyer strike at all. The evidence: the spread between the 30-year and the 3-month has collapsed from 379 basis points in 2011 (when the national debt was $14.3 trillion) to 134 basis points today (with debt above $40 trillion). "The bond market is not demanding additional compensation to own longer-term U.S. government debt," and "foreign private owners are continuing to buy much more treasuries." His verdict on the whole term-premium story: "Term premiums are horse crap. They're made up by economists." In his telling, the long end isn't soaring on fear; the yield curve is just trying to un-invert, and "the only thing that's holding up long-term rates is the short-term rate waiting for the Fed to get out of its inflation fixation." Note this bull argument directly contradicts the "foreign central banks have stopped buying" premise most others take as gospel, a genuine, and unusually well-argued, dissent.

Where they meet: even the bulls agree the level of yields is probably not going back to 4% soon. Dillian likes the yields precisely because they're high, and Lewis thinks fair value has structurally risen. The fight is about why: a slow re-rating to a higher-neutral-rate world (bulls) versus the early innings of a buyer strike on unsustainable debt (bears). This week, price kept siding with the bears.

Trades in play

  • Gold, still the cleanest expression of "they'll have to print eventually," but it took a hit on hike fears. Money Metals (Sep 4) noted gold was "slammed as a strong jobs report revived rate-hike fears," a useful reminder that the debasement trade and the hike trade pull gold in opposite directions. Mike Maloney on the same show argued the buyback itself "signaled fiscal desperation rather than market support," with gold spiking on the announcement, and framed gold and bonds as both hedges against fiscal risk. The structural gold case ran across Money Metals' earlier episode (Sep 2, "no way to pay this thing beyond just debasing everything… the biggest tailwind gold has") and Palisades Gold Radio (Sep 5).
  • Short duration / avoid the long bond remained the professional default (Boockvar, Schiff, Hanke, Lewis on level), with the notable, explicit exception of Jared Dillian, who is buying the long end outright. That's a real disagreement, not a nuance: same yield, opposite trade.
  • Watch the swap spread and the 10s-30s curve (Kurt Lewis) as the live scoreboard for whether this is a fiscal-panic trade or a macro re-rating. So far they say re-rating.

Read-throughs

  • Equities and the AI-vs-sovereign crowding-out trade. Bloomberg Surveillance (Sep 3) featured Lauren Moran of Wellington Management, who sees 2027 global issuance potentially topping $4 trillion, forcing markets to price higher costs for capital, and noted corporate spreads are only ~14% of all-in yields, meaning the sovereign yield is now the thing driving credit returns. The mechanism keeps recurring: hyperscalers issuing bonds (Google's ~$40 billion deal was cited by Dillian; AI names are ~25% of U.S. investment-grade issuance per Goldman) are competing directly with governments for the same pool of long-term savings.
  • Housing. The Loonie Hour (Sep 4) tied surging long yields directly to a delayed housing recovery: the long end sets mortgage rates, and a UK homeowner facing a 6% mortgage is the household-level version of a government facing 6% on its 30-year.
  • The dollar, the yen, and cross-sovereign correlation. The through-line all week is that the yen intervention and the bond buyback are two faces of one discomfort: Washington doesn't want the long end or the yen to break. With Japan's 10-year at 3% and its investors less inclined to send money abroad, the risk is a feedback loop: higher JGB yields lead to less Japanese buying of Treasuries, Bunds and gilts, which leads to higher yields everywhere. This is now explicitly a global-correlation story, not a set of national ones.
  • Private credit (new this week). Gromen's "dog that didn't bark" makes private credit a read-through worth watching: if insurers really are too trapped in illiquid private credit to buy 5% Treasuries, then stress in private credit and stress in the long end are the same story, and a forced sale in one becomes forced selling of Treasuries in the other.
  • Euro-periphery spreads (OAT-Bund, BTP-Bund) still weren't dissected as standalone topics; they surface only inside the broader "everyone's long end is selling off" cluster, though France's 30-year at a post-GFC high got repeated mention.

What changed

  • The buyback experiment has a result now, and it's a fail. Two weeks ago Bessent's surprise operation was a live, untested bet. This week the answer is in: yields round-tripped and then broke to fresh highs, and the professional consensus, from a buyback researcher on Odd Lots to Druckenmiller's public op-ed to Boockvar, is that it was price management that the market is now openly testing.
  • The story went global and synchronized. Two weeks ago this was a U.S. drama (the 30-year touching ~5.3%). Now it's Japan (10-year at 3%, first since 1996), Germany (Bund 15-year high), the UK (gilts highest since 2008, 30-year near 6%) and France (30-year post-GFC high) all at once. That shift, from national to global, is the single biggest change in the narrative.
  • The bulls came back. Recent weeks were bear-dominated; this week produced genuinely strong, well-argued bull cases (Dillian on demand and sentiment, Kurt Lewis on the swap-spread tell, Eurodollar University claiming there's no buyer strike at all). The debate is two-sided again.
  • Two brand-new ideas entered the conversation: the "stealth hike" reframe (the buyback may be raising long yields by shifting supply to the front end) and the "private credit is the hidden reason the long end has no bid" thesis. Both are worth tracking.
  • The Fed picture firmed toward a hike. Warsh's Jackson Hole speech, now that we can read it, implicitly signals tightening (Posen), and the market was pricing a ~66% chance of a hike even against soft jobs data, sharpening the two-arms-of-Washington tension (Treasury down, Fed up).