Long-term borrowing costs top their 2007 peak, but an Iran deal report pulls stocks back to flat

Methodology note: Night report, generated after the September 24 US close. Sources cited inline.

The Thirty-Year Closes Above Its 2007 High, and a Hormuz Deal Report Pulls Stocks Back to Flat

The thirty-year closed at 5.46%, above its 5.44% 2007 peak and the highest since 2004, after a seven-year auction tailed. Stocks did not follow. Nasdaq 100 futures were down 1% before the open. The Composite finished up 0.01% and the S&P 500 down 0.02% after Reuters reported US and Iranian negotiators discussing a phased deal to reopen the Strait of Hormuz. Oil still settled 3.4% higher and October hike odds rose to about 77.5%. Equities priced one report of a possible deal, while bonds, oil and the rate path kept pricing the inflation case. Both readings cannot hold for long. A thirty-year back under 5.40% would say the bond market has come round to the equity view.

• The thirty-year rose to 5.46%, a level not seen since 2004, as Japan's ten-year hit its highest since 1996 and European yields set multi-year highs — the move is global, not a US supply story alone
• Treasury sold about $44 billion of seven-year notes at 5.085% against 5.078% in when-issued trading, bid-to-cover 2.42 against 2.50 last month — the second tailed coupon sale in two sessions, on a day Treasury bought back $6 billion of 2037-2046 bonds and the long end still rose
• New York Fed President John Williams called another increase by year-end "reasonable", and CME FedWatch put October hike odds at 77.5% — up from about 73% after Barr, so a second voter has moved the front end further toward October 28
• US and Iranian negotiators in New York are exploring a phased path in which Tehran reopens Hormuz and Washington lifts its blockade, sources told Reuters — the same report names the obstacle: neither side wants to give up its leverage first
• Brent rose 3.4% to $106.60 and WTI 2.7% to $94.61, off the session highs after the report — the deal headline trimmed oil's gain without reversing it, a smaller reaction than stocks gave the same news

September 24, 2026 Close

Why it happened

• This morning's read was right on bonds and wrong on stocks. It said the discount rate mattered more to equities than trade policy. The thirty-year cleared 5.44%, but a Hormuz headline turned Nasdaq futures down 1% into a flat close.
• The long end led, not the front end. The two-year sat near 4.91%, close to this morning's 4.897%, while the thirty-year added 5 basis points. The October repricing is mostly done; what is still rising is the extra yield demanded to hold long bonds.
• Supply met weak demand again. The seven-year tailed a day after a poorly received five-year sale. The $6 billion buyback targeted 2037-2046 maturities, and the thirty-year still closed 5 basis points higher. The official bid is slowing the selloff, not stopping it.
• The inflation inputs kept moving the same way. Brent at $106.60 is above the $103.08 level that restarted the selling Wednesday, and Williams followed Barr. October odds of about 77.5% now rest on two officials and oil, not only on one PMI.
• Correction to the calendar these reports carried. August PCE is scheduled for September 30, not Friday. The first hard inflation test is four sessions away, not one.

Movers

Oracle fell about 4% after sending a force majeure notice to a Blue Owl unit on the New Mexico Project Jupiter data center, citing power delays. Oracle says the project remains on schedule, so a second delay notice would be what turns this into a capacity story.

Akamai rose about 20% in extended trading on a seven-year, $11.6 billion Anthropic commitment with a warrant for up to about 5% of the stock and roughly $5.5 billion of capex attached. The company is raising 2026 capex by $1.7 billion, including memory, which is a demand signal for Micron's print next week.

Costco reported $6.75 EPS and 9.4% comparable sales, with digital up 19.5%, against consensus near $6.52. The shares rose only 0.26% after hours from a $896.48 close, and $0.15 of that EPS was a one-off IEEPA tariff refund.

Nebius rose more than 6% after Bank of America raised its 2026-2028 revenue estimates. Together with Akamai, it shows AI-infrastructure demand being priced higher on a day the discount rate went the other way.

What to watch

Whether the thirty-year holds above 5.44%. One close above the 2007 peak, set while Treasury is buying $6 billion at a time, is a break of that level. Two or three closes would confirm it. A close back under 5.40% would say the move was two tailed auctions and a survey, and the buyback was enough. The next test is Monday and Tuesday, when there is no coupon auction. That makes it a cleaner read on demand for the bond.

Whether the Hormuz report becomes a deal before the September 29 window closes. Stocks recovered their morning losses on it Thursday afternoon, while oil gave back only part of its gain. If negotiators confirm a phased sequence, Brent back below $100 would remove one of the two inputs behind the long-end selling. If the report stays a report, the equity recovery has nothing under it, and Brent above $106.60 adds a fuel-cost channel to a Fed already at 77.5% October odds.

Micron on September 30 against a 5%-plus ten-year. Akamai's added memory purchases and Nebius's upgrade both say AI-infrastructure demand is intact. Consensus sits near $50.8 billion of revenue and $31.43 adjusted EPS. The same session brings August PCE, so the week's two biggest tests land within hours of each other. An in-line PCE and a memory beat would support the memory trade's run. A hot PCE would test it on valuation, whatever Micron reports.

Next 5 Trading Days

Fri Sep 25 — Day two of Xi's visit, final consumer sentiment and Costco's first session after results. Tests whether the summit adds anything and inflation expectations follow oil.

Mon Sep 28 — Dallas Fed manufacturing as quarter-end week opens. Tests whether the thirty-year holds 5.44%.

Tue Sep 29 — JOLTS, Conference Board confidence and the reported Hormuz window closes. Decides whether Brent goes back under $100.

Wed Sep 30 — August PCE, ADP and Micron's fiscal Q4. The first hard inflation data since the repricing, against 77.5% October odds.

Thu Oct 1 — ISM manufacturing, Nike fiscal Q1, and AMD's price increase takes effect. Tests the flash PMI's 56.7 the day before payrolls.