[October 30, 2026] Tech Stocks Plummet on AI Investment Concerns, Capital Shifts to Energy and Defensive Sectors
Hello, this is Hal.
The U.S. stock market yesterday, October 30, 2026, saw intense selling, particularly in tech stocks, as concerns grew that massive investments in AI infrastructure are straining corporate cash flows.
Earnings from major IT and semiconductor companies failed to meet market expectations, leading to a sharp decline of nearly 3% in the NASDAQ Composite Index.
Meanwhile, capital flowed into energy stocks benefiting from high oil prices and defensive stocks with stable revenue bases, showing a clear rotation of funds between sectors.
Today’s Market Overview
Tech stocks were heavily sold due to concerns over the profitability of AI investments, causing all three major indices to fall.
S&P 500 Index: 7,580.07 (-140.32 / -1.82%)
Dow Jones Industrial Average: 51,770.31 (-572.25 / -1.09%)
NASDAQ Composite Index: 25,437.00 (-747.73 / -2.86%)
The ‘Three Main Drivers’ That Moved the Market
The following three factors were the primary reasons for the cooling market sentiment and the rotation of funds between sectors yesterday.
Concerns over AI investment cash flow and disappointment in tech earnings
Earnings reports from major IT companies revealed that massive investments in AI infrastructure are straining free cash flow. Semiconductor giants also reported outlooks below expectations, causing market doubts about the profitability of AI investments to surge and leading to a sharp drop in tech stocks.
Persistent inflationary pressure and falling interest rates due to flight to U.S. Treasuries
While indicators like the Employment Cost Index showed persistent inflation, investors turned risk-averse following the sharp drop in tech stocks. As capital fled to safe-haven U.S. Treasuries, the 10-year U.S. Treasury yield fell sharply to the 4.91% level.
Rising energy prices due to Middle East tensions and volatility in the crypto market
Against the backdrop of geopolitical risk in the Middle East, oil prices remained high, and major oil companies attracted capital after announcing strong earnings. Meanwhile, reports of a large-scale hacking incident at a cryptocurrency exchange spread volatility to some risk assets.
Hal’s Perspective: Tech stocks failing to benefit from lower interest rates and the concentration of funds in defensive sectors
Today, I will explain the impact of falling long-term interest rates on the market and the rotation of funds between sectors.
Structural reasons why tech stocks are being sold despite falling interest rates: The 10-year U.S. Treasury yield fell to around 4.91%. Normally, lower interest rates are a tailwind for growth stocks, but this time, company-specific concerns—namely excessive capital expenditure on AI and deteriorating cash flow—outweighed the positive effects of lower rates, leading to the decline in tech stocks.
Definite capital rotation into energy and defensive sectors: Driven by expanding refining margins due to high crude oil prices, the energy sector led the overall market with significant gains. Additionally, capital flowing out of tech stocks moved into defensive sectors such as consumer staples, utilities, and healthcare, where stable dividends and earnings can be expected.
Notable stocks: Stocks bought due to strong earnings and high oil prices, and stocks sold due to AI investment concerns and slowing demand
[Gainers]
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Eli Lilly (LLY): +3.19%
In addition to significant growth in third-quarter revenue, the company raised its full-year revenue guidance, attracting capital seeking reliable earnings and pushing the stock to a new all-time high.
Against the backdrop of sustained high crude oil prices and a sharp expansion in refining margins, third-quarter net income doubled, exceeding market expectations and driving the energy sector’s rise.
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Chevron (CVX): +1.75%
Driven by record production and expanded refining margins, the company reported net income that beat market expectations, attracting strong buying as a high-profit stock with resilience against inflation.
[Losers]
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Intel (INTC): -28.58%
In addition to fourth-quarter guidance falling short of expectations due to the slump in the PC market, concerns over cash outflows from capital expenditures led to a historic decline.
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Reddit (RDDT): -29.22%
Following the release of its third-quarter earnings, the stock plunged on growing concerns that intensifying competition from the rise of AI search could lead to a decline in site visitors.
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Amazon (AMZN): -1.41%
Third-quarter revenue and profit missed market expectations, and the market reacted negatively to the pressure on cash flow from increased capital investment in AI infrastructure, leading to selling for the second consecutive day.
Outlook: Focus on the midterm elections and macroeconomic indicators
The current U.S. stock market is at a turning point where market evaluation of AI investment is becoming more stringent, and capital is shifting toward companies that generate steady profits and cash flow.
Next week, the U.S. midterm elections are approaching, and key economic indicators such as the ISM Manufacturing Index and U.S. employment statistics are scheduled to be released. I believe it is important to maintain a stance of calmly assessing companies’ earning power and financial health while confirming political trends and the strength of the labor market.
That is all from me, Hal.
Important Request
This article is intended for informational purposes regarding U.S. stocks and does not recommend the purchase or sale of any specific securities. Please make all final investment decisions based on your own judgment and responsibility.