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2026-10-16

Week of Oct. 12: The AI Trade Breaks, the Dow Gains

US Market Week in 5
US Market Week in 5@Tom
Week of Oct. 12: The AI Trade Breaks, the Dow Gains

The VanEck Semiconductor ETF fell 10 percent this week, its worst week since April of last year. It dragged the Nasdaq Composite down more than 4 percent. It did not drag the rest of the market with it.

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U.S. equities split in two this week. The artificial-intelligence trade broke hard — the semiconductor complex had its worst week since April 2025 and the Nasdaq Composite lost more than 4 percent — while the Dow Jones Industrial Average rose, energy and defensives gained, and the bond market rallied through inflation reports that came in hot. 1

Where the week landed

IndexFriday closeWeek
S&P 5007,659.44 (−1.09%)about −2% 1
Nasdaq Composite26,140.03 (−2.14%)−4.5%, its worst week since June 1
Dow Jones Industrial Average52,002.41 (−175.28 points)+0.7% 1
Both the S&P 500 and the Nasdaq finished the week below their 50-day moving averages, and the Cboe Volatility Index jumped about 20 percent on Friday to its highest close since June. 1
The week's two key prices moved in opposite directions. The 10-year Treasury yield closed at 5.081 percent, down from 5.242 percent a week earlier, and the 30-year at 5.428 percent — a safe-haven bid, in a week when the inflation data ran hot. 234 Crude went the other way: West Texas Intermediate settled at $101.41 a barrel, up 3.51 percent on Friday, and Brent at $109.86, up 3.72 percent, as Iran escalated its attacks in the Strait of Hormuz and Ukraine kept striking Russian refineries. 1

What the market sold, and what it bought

The week's selling was concentrated in the debt-financed half of the AI build-out rather than in U.S. equities broadly. CoreWeave, the AI cloud company, carries more than $51 billion of debt and obligations; this week the yield to maturity on its 9.75 percent bond due in 2031 reached 15.78 percent, and the spread on its five-year credit default swaps went above 1,140 basis points before settling near 1,038 — past the 1,000-basis-point level that S&P Global Market Intelligence treats as distress. The stock fell about 25 percent on the week. 5 Oracle's five-year swap spread widened about 10 percent in the same stretch. 5
Two things set it off. Chinese memory-chip competition hit the Korean manufacturers hardest: South Korea's Kospi fell 14.5 percent for its worst week since October 2008, with Samsung down almost 20 percent and SK Hynix about 25 percent. 1 And the money got more expensive, with the benchmark 10-year yield still near 5 percent and the Federal Reserve expected to raise again this year. 6
What the market bought instead was almost everything else. Energy rose with oil, and utilities, health care and consumer staples gained, with staples taking the sector lead late in the week. The equal-weight S&P 500 rose more than 1 percent on Thursday to its highest since mid-September, and the share of index stocks trading above their 50-day moving averages has doubled this month, to about 43 percent. 17
Third-quarter bank earnings opened in the same key. Goldman Sachs earned $17.01 a share on revenue of $18.68 billion, beating consensus on both lines and lifting its shares about 4 percent. JPMorgan Chase missed revenue estimates for the first time in eight quarters, at $50.17 billion against roughly $51.2 billion expected. Citigroup beat with $2.85 a share, Wells Fargo and Morgan Stanley beat on profit, and Bank of America reported $0.91 a share. 89

Hot inflation, and a Fed that will not say

September's consumer price index rose 0.6 percent for the month and 3.7 percent over the year, with core inflation at 2.6 percent — all above the consensus. Energy was the driver again: gasoline rose 9.1 percent in the month and accounted for about half the headline increase, and shelter, used vehicles and apparel also gained. 10
Wholesale prices were worse. The producer price index rose 1.3 percent in September and 6.3 percent over twelve months, the largest monthly gain since March 2022 and the largest annual gain since December 2022. The Bureau of Labor Statistics attributed almost half of the increase in processed goods for immediate demand to diesel fuel. 11 Retail sales rose 0.8 percent in September against 0.4 percent expected, but excluding autos and gas stations the gain was 0.25 percent, down from about 1.1 percent a month earlier. 11 The Fed's Beige Book, published Wednesday, recorded the highest number of inflation mentions of any edition. 11
Other releases during the week: September industrial production rose 0.7 percent, with manufacturing up 0.3 percent and utilities up 3.5 percent, and capacity utilization at 76.9 percent. 12 Existing home sales rose 1.5 percent to a 3.99 million annual rate, with inventory at 1.60 million units. 13
Chair Kevin Warsh spoke at the International Monetary Fund's meetings and declined to signal the October 28 decision — "I don't prejudge meetings." Traders put the odds of a hike at that meeting near 20 percent, down from about 45 percent immediately after Wednesday's CPI report, while more than 90 percent still price an increase by the end of the year. The market's peak forward rate, at 4.64 percent in September 2027, sits above the Fed's own September projection of 4.125 percent. 414

What matters next week

Earnings take the AI question off the bond market and onto the income statement. Meta Platforms reports Wednesday, the first of five hyperscalers expected to raise capital spending to about $1.2 trillion next year; Lam Research and Texas Instruments report the same day, and Tesla and Netflix on Tuesday. Analysts expect S&P 500 earnings to grow more than 30 percent from a year earlier for the third quarter. 6
The data calendar is thin and housing-heavy: housing starts and building permits on Tuesday, pending home sales and the Conference Board's leading index on Thursday, and the first October readings from the S&P Global business surveys on Friday. The Treasury auctions a 20-year bond on Wednesday and a 5-year TIPS on Thursday. The Fed is in its blackout before the October 28 meeting, and the first estimate of third-quarter GDP lands October 29. 714
The frame to carry in is the week's split. The market repriced the debt behind the AI build-out this week without repricing the economy: the Dow rose, breadth improved, and Treasuries rallied even as inflation ran hot. What settles it is whether the hyperscalers can show profit growing faster than the capital spending that the debt pays for. 16

References

  1. 1
    Stock market news for Oct. 16, 2026

    cnbc.com

  2. 2
    U.S. 10 Year Treasury

    cnbc.com

  3. 3
    U.S. 30 Year Treasury

    cnbc.com

  4. 4
    U.S. Treasury yields waver as traders wrap up volatile week

    cnbc.com

  5. 5
    CoreWeave credit default swaps hit distress levels as investors sour on AI debt

    cnbc.com

  6. 6
    Wall St Week Ahead: As AI rally wobbles, stock market's spotlight turns to earnings

    reuters.com

  7. 7
    Stocks on Pace for Weekly Loss Despite Yield Drop

    schwab.com

  8. 8
    Bank earnings: JPMorgan, Goldman, Wells Fargo, Citigroup

    cnbc.com

  9. 9
    Bank Earnings Q3 2026: Goldman +30% Beat, JPMorgan Misses Revenue

    investing.com

  10. 10
    CPI inflation report, September 2026

    cnbc.com

  11. 11
    September producer price index, retail sales data

    cnbc.com

  12. 12
    Industrial Production and Capacity Utilization — G.17

    federalreserve.gov

  13. 13
    Existing-Home Sales, September 2026

    nar.realtor

  14. 14
    MSD Weekly Market Update: Week Ending October 16, 2026

    fhlbny.com

US Market Week in 5
US Market Week in 5@Tom

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