The Week the AI Trade Broke and the Average Stock Didn’t
By Eli Gal Levy, Senior Analyst
Is the risk worth the reward at this point? Part 9
The question I keep getting is not about a level. It’s about whether to be in this market at all. Stay invested while indexes print records, or take a guaranteed yield in short-term paper and sit this out until it works itself out. It sounds like the conservative choice, and it is — but conservative is not the same as costless. Every decision in this tape charges you something, including the decision to do nothing.
The week the AI trade broke and the average stock didn’t.
Two inflation prints came in hot, the Fed chair refused to tip his hand, and the market spent the week selling the thing it has owned all year. The S&P 500 fell 1.95% to 7,659.44, now 2.04% under its October 6 record close of 7,818.93. The Nasdaq Composite lost 4.48% to 26,140.03, its worst week since June. The Dow actually gained 0.67% to 52,002.41. The Russell 2000 fell 3.05%, and the VIX ran from 14.84 to 19.99.
The rotation inside those numbers is the story. The cap-weight-to-equal-weight ratio fell from 3.655 to 3.565 across the week — the largest five-day compression of this cycle — while the share of S&P members above their 200-day average actually rose, from 47.5% to 51.9%. Breadth improved while the index fell. That has not happened in months.
The week in sequence
Monday was a holiday for bonds and a non-event for stocks, with the S&P off 0.06%.
Tuesday the banks opened earnings and the market disliked all of it. JPMorgan earned $5.57 against about $5.93 expected on $50.2 billion of revenue — its first miss in roughly three years, with fixed income the weak spot — and fell 0.9%. Goldman Sachs beat by roughly a third at $17.01 and still finished lower. Citigroup posted its best third-quarter revenue in a decade and fell 5.6%.
Wells Fargo missed on revenue and lost 3.1%. Overnight, China’s CXMT unveiled a server DDR5 memory design and Korea’s Kospi fell 5.5%, with SK Hynix off about 10% and Samsung 7.4%.
CPI
Wednesday was the break. September CPI ran 0.6% on the month and 3.7% on the year against 3.6% expected, with core at 0.3% versus 0.2% and 2.6% annually. October hike odds leapt from about 21% to above 50% intraday before settling near 27%. The S&P fell 1.11% to 7,718.94, its largest one-day drop since July, with the semiconductor index down 4.3% and the Russell down 1.93%.
Borrowing
The damage concentrated where the borrowing is: CoreWeave fell 15.5% and Oracle 8.8%, both with bonds at record yields, erasing roughly $80 billion across chips, clouds and hyperscalers. Bank of America closed down 4.8% carrying a $1.2 billion Treasury penalty over anti-money-laundering controls. It was the first close below the dealer-gamma flip after eight straight above.
Thursday the pipeline data was worse and the market ignored it. Producer prices rose 1.3% on the month against 0.5% expected, the biggest monthly gain since March 2022, and 6.3% year over year; core ran 0.7% against 0.3%. Retail sales gained 0.8%, but the control group that feeds GDP rose only 0.1%.
Stocks
Stocks reversed a 0.6% loss to close up 0.33%, the Dow added 1.08% to a one-month high, the Russell gained 1.38% and the equal-weight S&P about 1.4% — while the chip index fell for a seventh straight session.
Taiwan Semiconductor reported a sixth consecutive record quarter, raised 2026 growth to 44% and guided the fourth quarter to $52.3–54.3 billion against $48.8 billion expected, and its U.S. shares still fell 1.8%. Korea’s Kospi dropped 7.6% on the day and 14.5% on the week, its worst since 2008.
Friday the expiration cleared and the selling resumed: the S&P fell 1.09%, the Nasdaq 2.14%, and the VIX closed at 19.99 with the volatility-of-volatility index at 109.91. Crude ended the week near $99 on the November contract, up about 7.8% from the prior Friday’s settle after an 8.6 million barrel inventory draw.
The rates mirror
The bond market did the opposite of what the data implied. The 10-year fell 15 basis points on the week to 5.09%, the 30-year 17 to 5.43%, and the 2-year 6 to 4.74% — after touching about 5.30% intraday on the CPI print. A long end that rallies into the hottest producer prices in four years is pricing growth and financing stress, not inflation. October hike odds ended near 15% after Chair Warsh said in Bangkok that he does not prejudge meetings; December sits near 91%.
Credit did not confirm the Thursday bounce. The high-yield spread widened from 3.11% to 3.23% across the week, and net liquidity went flat at $5.87 trillion, up only $10 billion, with the October 15 tax receipts still to land in next Thursday’s reading.
Who moved
Jeff deGraaf (Renaissance Macro) had the week’s best call: memory names are in the post-bubble roll-over phase and should be sold into weakness. Micron, Samsung and SK Hynix finished down roughly 12%, 20% and 25%. His broader warning is financing — real yields near 20-year highs, BBB spreads widening, and the most exposed names are the ones that must refinance.
Gary Cohn (IBM vice chairman, former Goldman president) framed the competition problem: with the 10-year above 5% and tax-exempt municipals near 5%, an investor can earn roughly 5% after tax against a four-year bull market led by a handful of names. He noted about 20 equity offerings pulled or postponed in ten weeks.
Larry Fink (BlackRock) reported $205 billion of net inflows in a flat quarter for stocks and said government borrowing now competes with data centers for the same capital.
The economists converged. Jan Hatzius (Goldman) expects a pause in October and a final hike in December. Citigroup’s team reversed a no-more-hikes call to December, with no cut before June 2027. Seema Shah (Principal) sees December and early 2027; Nancy Vanden Houten (Oxford Economics) went to October.
Mohamed El-Erian took the other side Friday: the market is pricing in too many hikes.
Tom Lee called the CPI reaction an overreaction and the AI story intact. Mark Newton called it a normal correction at trendline support and ranks health care the top sector into mid-November — the group that led Thursday’s reversal. Mark Mahaney (Evercore) says AI demand is still coming; Bernstein’s Madison Rezaei kept CoreWeave at Underperform, calling the model economically challenged. Mohit Kumar (Jefferies) warned an AI capex slowdown would mean a sharp downgrade to US growth. Stephen Biggar (Argus) said banks are benefiting from benign credit quality — the one clean bullish read on the week’s earnings.
Into next week
The Fed’s quiet period began Saturday, so the next policy signal is the October 27–28 decision itself. The 20-year auction lands Wednesday, VIX futures and options settle the same morning, and Thursday’s balance sheet is the first to carry the October 15 tax receipts — a drain that arrives with net bill issuance still running.
October’s expiration took the 7,800 and 7,700 walls with it; the November chain puts its heaviest calls at 7,900 and splits puts between 7,700 and 7,600. With the index below both the flip and that structure, dealers are hedging with the move, not against it.
I am biased toward the tape. I follow what the market does, not what I think it should do. Right now the tape is two percent off its highs with the VIX back at 20, the front end pricing a December hike, and breadth improving underneath — and I will keep watching the ten-year, the credit spreads, the equal-weight index and the HYG ETF to tell me when that changes.
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