Ninety Days From Today

Count it out on a calendar. Ninety days from this morning is December 2. Between here and there sit a Federal Reserve meeting on September 16, a midterm election on November 3, and another Fed meeting in early December. That is the window this article is about: one quarter of a year in which the world’s largest bond market has to price a war that shows no sign of ending.

The war with Iran entered its sixth month this week, and it did so badly. After a monthlong lull, American strikes resumed on Iranian targets on August 30, and Tehran answered on September 1 and 2 by hitting US bases and assets across the Gulf and firing on its Gulf neighbors (ISW; AP). Tankers are being struck in the Strait of Hormuz. The Navy is escorting commercial vessels out of the Persian Gulf, and US officials say shipping through the strait is running at roughly half of pre-war levels (Axios, via ISW). Assume nothing improves. Assume the strait stays half-open, the tankers keep getting hit, and the lulls keep breaking. What does that do to the bond market by December?

Where the Market Stands Today

The numbers as of this week:

  • The 10-year Treasury yield closed at 4.79% on September 1, after sitting below 4% before the war began in late February (FRED; CNN).
  • The 30-year yield is at 5.27%, after touching its highest level since 2007 in May (sofrrate; CNN).
  • Brent crude settled at $90.49 on August 31 and jumped more than $4 again on September 1 as fighting resumed; it briefly touched $100 during the July escalation (CNBC; Reuters).
  • The average 30-year mortgage rate is approaching 7%, the highest in nearly a year (Freddie Mac, via Marketplace).
  • Futures traders put a 66% probability on a quarter-point Fed hike at the September 16 meeting, and Fed-watching strategists at Barclays expect a second hike in December (Marketplace; CNBC).

That last line deserves a pause. Six months ago the argument was about when the Fed would cut. Now the chair, Kevin Warsh, says inflation has not “meaningfully improved” and that the Fed has “work to do,” and the market’s live question is whether he raises rates twice before New Year’s (Marketplace). The war did that.

Why Treasuries Are Not a Safe Haven This Time

Here is the trap, and it is worth spelling out because most people’s instincts about bonds were built on the wrong decade.

When Iraq invaded Kuwait in August 1990, long-term Treasury yields initially climbed with oil, then fell through the winter as investors fled to quality: the Gulf War was a demand shock, and a slowing economy pulls yields down (New York Times, August 23, 1990). Treasuries did their job. Bad news was good news for bonds.

This war is shaped differently. It is a supply shock: oil blocked at a chokepoint, shipping insurance repricing, energy costs feeding into everything from diesel to fertilizer. A supply shock raises prices while it slows growth, and a central bank facing that combination cannot rescue the bond market, because cutting rates into rising inflation would pour fuel on the fire. That was the 1970s lesson. After the 1979 oil shock, inflation ran above 11%, and Paul Volcker had to push the federal funds rate to roughly 20% to break it, at the cost of a deep recession (Federal Reserve History).

So if Iran does not improve over the next ninety days, the two forces that would normally pull yields in opposite directions pull them the same way. Recession fears would argue for lower yields. Oil-driven inflation forces the Fed to keep rates high or hike. The inflation force wins, because the Fed controls the short end and the short end anchors everything else. Reuters called this a “stagflationary dilemma” for Treasury investors back in March, and the past six months have only sharpened it (Reuters).

There is a second force pushing the same direction, and it has nothing to do with the Fed: supply. The war has already cost the United States $37.5 billion through late July, by the Defense Secretary’s own account, and every week adds more (CNN). That lands on top of deficits that were already demanding more issuance from a Treasury market of roughly $30 trillion. Jamie Dimon said the quiet part out loud in July: he would not buy long-dated Treasuries at current prices, and he warned about bond vigilantes becoming something worse (CNN). When the marginal buyer of your debt tells the world your debt is overpriced, the term premium does the talking.

What the 10s30s Spread Is Saying

There is one more number worth reading before the map, because it is the quietest signal in the market and possibly the most honest: the spread between the 10-year and 30-year yields.

On the eve of the war, in late February, the 10-year yielded 3.97% and the 30-year 4.64%: a gap of about 67 basis points. On September 1, the 10-year was at 4.79% and the 30-year at 5.27%: a gap of 48 basis points (Treasury constant-maturity data via FRED). Read that carefully. Since the war began, the 10-year has risen 82 basis points while the 30-year rose only 63 basis points. Both ends went up, but the belly of the curve went up faster, and the long end has been flattening all summer. The gap bottomed at 44 basis points in mid-June and has only partially recovered since.

For context, this spread averaged roughly 60 basis points from 1990 through the 2010s and closer to 40 basis points since 2020, so today’s 48 is not extreme. The trend is the message, not the level. A flattening 10s30s spread in a rising-rate environment means the market is repricing the Fed: hike expectations lift the 10-year through its short-end component while the 30-year, which cares little about the next two years of policy, moves less. Investors are being paid less, not more, to extend from 10 years to 30. The marginal buyer of 30-year paper is getting thinner compensation for the two risks that live exclusively at the long end: decades of compounding inflation, and decades of new bond supply.

What would that mean over the next ninety days if Iran does not improve? Two ways for this to break:

  • The spread re-widens. If the war grinds on, the deficit compounds, refunding announcements pile up, and the long end wakes up to what Dimon already said out loud. The 30-year sells off faster than the 10-year, the spread re-widens toward its historical norms, and the curve steepens from the back end. That is the vigilante scenario, and it is the one consistent with everything else in this article.
  • The spread keeps compressing. If it does, the market is saying it believes the Fed-hike story and not the supply story, that long-horizon inflation stays anchored no matter how much debt the Treasury issues. That would be the complacent reading, and complacent readings of a wartime bond market have a short shelf life.

Watch the spread the way you would watch a pressure gauge. It does not tell you when something breaks. It tells you how much room there is between the current price of long-term money and the price at which the buyers of last resort walk away.

The Buyback Scorecard

There is one more actor to introduce before the map, because it will be on stage for every scene of it: the Treasury’s own buyback program.

On August 19, with long yields grinding higher, Secretary Scott Bessent announced that Treasury would double the size of its long-end buyback operations to at least $4 billion per operation, effective September 9 and running through November 4 (Treasury; Reuters). The announcement worked, briefly. Yields fell the day it landed (Reuters), then climbed right back the next day (CNBC). Bessent went on television to insist the program was about liquidity, not yield control, and Evercore’s Krishna Guha scored the appearance as having “minimal impact” on the market. He called the plan “a weak form of Operation Twist” that “in itself will have little enduring impact and could backfire if it is seen as signaling concern about the ability to fund longer-term at acceptable cost.”

The scoreboard since then: the 10-year has risen from the mid-4.6s on announcement day to 4.79%, and the 30-year stands at 5.27%. Yields are higher than they were before the program was doubled. To be fair, the doubled operations do not begin until September 9, so the program itself is untested; what has been tested, and failed, is the announcement. Traders bought the headline for about a day, then went back to selling. Jefferies’ Thomas Simons added a sharper criticism: the move came two weeks after the quarterly refunding with no hint of it in Treasury’s own guidance, breaking the department’s long-standing “regular and predictable” communication doctrine and, in his words, reducing “the overall credibility of their guidance” (CNBC).

The scale problem has not changed either, and it is worth doing the arithmetic once. A $4 billion operation, a few times a week, against a market that regularly turns over $900 billion in a single day of Treasury trading is a fraction of one percent of daily volume. Markets do not mark to announcements forever; they mark to flows. The one card that remains face down is what traders are already calling the “Bessent put”: unpredictable, tactical interventions designed to catch shorts off guard and impose losses. Guha’s verdict on that tool is the right one, in my view: it may slow an overshoot, but it “may not have much lasting impact on where yields are a few months from now.”

Notice the calendar, though. The doubled program runs through November 4, the day after the midterm elections, which means it will be live for exactly the window this article identifies as the stress test: the September refunding cycle, a likely Fed hike, and an election. If the buybacks are read as what they risk becoming, evidence that the Treasury is worried about its own ability to fund long-term debt at acceptable cost, they will add to the term premium rather than subtract from it. I made the structural case against this program in August, before the war’s lull broke (Treasury Buybacks: A Colossal Failure in the Making); the ninety days ahead will test it whether the case is right or wrong.

The Ninety-Day Map

Take the premise seriously: no improvement, no breakthrough, no reopening of the strait. Here is the path from September 3 to December 2.

September 16. The Fed meets with oil in the nineties and a hike priced at roughly two-to-one odds. If the war is grinding on, Warsh hikes. The statement will not say the word “war,” but every basis point of it will be in the inflation projections. Expect the 10-year to test 5% around this meeting.

October. The quarterly refunding lands on a market already absorbing record deficits, and campaign season begins in earnest with the election five weeks out. Neither party is running on spending cuts, and the bond market knows it. This is where the curve steepens: the Fed controls the front end, but the long end prices deficits, and deficits compounded by war are priced in basis points. The 30-year, already at levels last seen in 2007, has room to run toward 5.5%.

November 3. Midterms. A contentious election during a war with oil back above $90 is not a bond-friendly combination. Whichever way it breaks, it adds a risk premium rather than removing one, because a divided or contested outcome does nothing about the deficit trajectory.

Early December. The December FOMC meeting is the last of the year, and if Barclays is right it delivers the second hike. By then, ninety days of uninterrupted war means three more months of elevated diesel, heating oil, and shipping costs baked into the price level. If Brent holds above $90 through the fall, headline inflation does not come down, and neither do yields. The realistic landing zone: the 10-year in the 5% range, the 30-year at or above its 2007-era highs, mortgages at 7% or above, and a term premium that investors a year ago would have called impossible.

That is the base case. Two branches sit on either side of it:

The escalation branch. A full closure of the Strait of Hormuz, or strikes that draw Iran’s neighbors in directly, takes roughly a fifth of the world’s oil off the market in a stroke. That is the 1979 scenario, and the 1979 precedent says the Fed’s choice becomes Volcker’s choice: break the inflation or bequeath it. Bonds in that world sell off hard at the long end no matter what the Fed does, and the question stops being whether yields hit 5% and becomes whether the Fed will do what it takes to make 5% temporary.

The paradox branch. And here is the part that keeps honest forecasters humble: even in a world where Iran does not improve, Treasuries could still rally. If ninety days of expensive oil breaks something else first, a credit event, a disorderly stock market, a consumer that finally rolls over, the flight to quality would overwhelm the inflation signal, exactly as it did in 1990 and again in 2008. War and recession are not the same trade. The bond market can fight the Fed’s inflation problem one quarter and catch the recession’s fall the next, sometimes within the same month. Anyone who tells you they know which force wins the race has not been paying attention to how 2022 rewarded the patient and punished the certain.

What a Careful Investor Does

None of this is a prediction that yields will rise in a straight line. It is a statement of asymmetry: if the war does not improve, the risks to long-term yields are skewed upward, and the price of being wrong about duration is much higher than the reward for being right.

The playbook is not new, and it is not clever. It is the same resilience structure this site keeps coming back to:

  • Keep duration short at the front end. Bills and short notes maturing within a couple of years let you reinvest at higher rates as the curve moves, instead of locking a 30-year loss into your statement. The 2-year at 4.39% is a better risk-adjusted home for new money than the 30-year at 5.27% (sofrrate).
  • Own the inflation directly. TIPS exist precisely for the scenario this article describes: a market where the nominal yield lies about what your money will buy. If the war keeps oil high, the inflation adjustment does the work the coupon cannot.
  • Ladder, do not time. Nobody knows the September meeting’s outcome, and nobody knows December’s. A ladder of maturities converts that ignorance into a schedule: something matures every few months, and you redeploy at whatever the market is paying.
  • Keep liquidity for the paradox. If the recession branch shows up first, the flight to quality will be violent and brief. Cash and near-cash are what let you buy that moment rather than watch it.

The Long Way of Saying It

The bond market is not a casino and it is not a democracy. It is an ongoing referendum on whether a government’s promises are worth holding, and over the next ninety days that referendum has three questions on the ballot: an oil chokepoint that stays half-shut, a central bank that may have to raise rates into a slowing economy, and an election that will decide how much of this anyone in Washington is willing to fix.

You do not need to know the answers to invest well through them. You need to respect what the market is already saying: the 10-year has moved from below 4% to nearly 4.8% in six months, the long bond traded at 19-year highs this spring, and the people who manage the world’s money are openly warning each other about vigilantes. Storms do not send invitations. But they do leave clues, and right now the clues are written in basis points.

Ninety days is not a long time. It is long enough, though, to have your defenses built before the lightning strikes, and to discover, like every prepared investor before you, that the opportunity hidden in uncertainty belongs to the ones who kept their powder dry.

PRH | huffmanwrites.org | © Philip Huffman

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