Sunday long-read · Sunday, 25 October 2026
The Sunday Sequence: the week in the order it was priced
Chips fell first, bonds caught them second, oil rose third and the rest of the market paid fourth. The S&P 500 lost half a per cent on the week. The sequence is the lesson; the half per cent is not.
On Sundays this desk puts the week back in order. Not by size of headline, but in the order in which prices moved, because the order tells you which worry was driving and which was being dragged along.
1. The chips went first. On Thursday the Philadelphia semiconductor index fell almost 7% and the Nasdaq 2.6%, its worst day since June1. The worry was not demand. It was the cost of borrowing to meet it: data centres are increasingly paid for with debt, and debt has a price1.
2. The bonds caught them. The same day investors ran to US government bonds, giving Treasuries their biggest rally in more than three years1. Almost a full quarter-point of Fed rate rises for next year was priced out during the week1. When one half of a balanced portfolio falls and the other rises, that is not luck. That is the design.
3. Oil rose third, and hardest. On Friday Brent settled at $116.72 a barrel, up $3.55 on the day and 6.24% on the week, its highest settlement since 29 April2,3. Dow Jones Market Data counts five weekly gains in a row and a rise of 12.74% so far this month3. WTI settled at $103.272. Reuters tied Friday’s move to Houthi attacks in Saudi Arabia and an oil spill off the UAE2.
4. Everyone else paid fourth. On Friday the Dow fell 652.82 points, or 1.23%, to 52,215.16; the S&P 500 lost 0.52% to 7,623.68; the Nasdaq slipped 0.21%4. Technology steadied, rising 0.35%, while consumer staples, consumer discretionary and financials each fell more than 1%4. American Express fell more than 3% after announcing it would cut about 5% of its global workforce, citing the need to “prepare for AI”5. On the week, the S&P 500 lost 0.5% and the Nasdaq 0.7%, while the Dow gained 0.4%, its third weekly gain in a row4.
What the order says. The week began as a technology story and ended as an oil story. By Friday the selling had moved from the companies that build the future to the companies that sell groceries and lend money today, which is what a higher fuel bill does: it taxes everything a little. “There is still fallout from the questioning of the AI trade,” Kristina Hooper of Man Group told Reuters4. True, and by Friday it was no longer the main fallout.
What it does not say. It does not say a crash has begun. A half-per-cent weekly loss after a seven-per-cent day in chips is a market absorbing news, not panicking about it. The harder test arrives this week, when about a third of S&P 500 companies report, among them Alphabet, Microsoft and Amazon4. Their capital-spending forecasts are the invoice the whole AI trade is waiting to read.
For you. If you hold a broad fund, this was a week in which it did what it says on the tin. Nothing here is advice.
What to watch
- Alphabet, Microsoft and Amazon report this week, with about a third of the S&P 500. Read the capital-spending lines before the earnings per share.
- The Fed's meeting on 27–28 October, and whether the bond rally of Thursday survives Friday's oil.
- Monday's first Brent print after a weekend of strike talk and talks talk.
A week is a sequence, not a score. The score was minus half a per cent; the sequence told you who was paying.
Sources
- Tech selloff relents, oil at five-month high — Reuters via Investing.com, 23 Oct 2026.
- Oil prices jump $3 on Houthi attacks, oil spill, highest settlement since April — Reuters via Investing.com, 23 Oct 2026.
- Front Month ICE Brent Crude Rose 6.24% This Week to Settle at $116.72 — Data Talk — Dow Jones Market Data via Morningstar, 23 Oct 2026, 15:14 ET.
- Wall Street closes lower to end rocky week — Reuters via Investing.com, 23 Oct 2026.
- Stock market news for Oct. 23, 2026 — CNBC, 23 Oct 2026.
Every figure in this piece traces to a source above or to the desk’s own arithmetic on those sources, marked as such. Quotations are short and attributed. Spot an error? Write to the desk; corrections are logged on the method page.
Commentary for information only. Not investment, legal, tax, medical or political advice. Not an offer or solicitation. Analysis may be incomplete or wrong. Charts show published public data, not a trading feed; binding numbers live with the institutions that publish them.