Wall Street close: Nasdaq falls 2.8% as AI spending fears hit tech

What happened. On Friday 30 October, US stocks fell at the close. The Nasdaq Composite lost 2.8%, the S&P 500 about 1.8% and the Dow Jones 1.09%: it dropped 572.25 points to 51,770.31. During the session the Nasdaq was down as much as 3.3%, but it ended the day down 2.8%. For the Nasdaq it was the worst day since 5 June.

What pulled the market down. It was the second day of selling. On Thursday Alphabet, Google's owner, fell 12% and lost more than $500bn in market value: the company said its AI answers in search were hurting search ad revenue. On Friday Alphabet slid another 1.4%. Intel lost 28%, or more than $130bn in value, after a weak fourth-quarter forecast and a warning about slow PC demand. Amazon closed down 1.4%, Reddit down 29% and Roblox down 18%.

Why AI spending worries investors. According to the BBC, Meta, Alphabet, Oracle, Amazon and Microsoft together plan to spend about $800bn in 2026. Alphabet expects to spend up to $205bn and Amazon has committed $220bn. By Yahoo Finance's calculation, Amazon's free cash flow over the 12 months to September was a record outflow of more than $42bn. Kathleen Brookes of XTB says investors now want payback.

The month in numbers. According to Yahoo Finance, in October the Dow rose 1.5%, the S&P 500 fell 1.2% and the Nasdaq fell more than 5%. That is the Nasdaq's worst month since March 2025. Only technology and communication services fell in October, so it looks more like a sharp rotation than a sell-off of the whole market. Oil kept rising: Brent climbed to about $112 a barrel. Two Fed officials said on Friday that rates need to go higher, which strengthened expectations of a December hike.

Keep it in perspective. Even after the drop, the Nasdaq is up 7.8% over the past year. Keith Lerner of Truist sees the fall as possibly a reset, but allows for roughly 2-8% more downside in tech. That is his opinion, not a fact. Brookes of XTB notes that November is typically a strong month for stocks, but says that if AI stocks keep struggling, the AI trade may be past its peak.

What we don't know. Whether the sell-off continues next week. What the Fed will decide in December. How markets will react to the US elections and news from the Middle East.

已确认的事实

• On 30 October 2026 the Nasdaq Composite closed down 2.8%, its worst day since 5 June.^[1][2]
• The Dow Jones closed that day at 51,770.31, down 572.25 points, or 1.09%; the S&P 500 fell 1.82%.^[1]
• During the session the Nasdaq was down 3.3%.^[1]
• In October the Dow rose 1.5%, the S&P 500 fell 1.2% and the Nasdaq lost more than 5%: the Nasdaq's worst month since March 2025.^[1][2]
• Intel shares fell 28%, losing more than $130bn in value; finance chief David Zinsner said the PC slowdown should last at least through the first half of next year.^[2]
• Alphabet fell 12% on Thursday, losing more than $500bn in value, and another 1.4% on Friday.^[2]
• Amazon closed down 1.4%, Reddit down 29% and Roblox down 18%.^[2]
• Meta, Alphabet, Oracle, Amazon and Microsoft plan to spend about $800bn in 2026; Alphabet expects up to $205bn and Amazon has committed $220bn.^[2]
• Amazon's free cash flow over the 12 months to September was an outflow of more than $42bn, almost double the previous record of about $23bn.^[1]
• The Nasdaq is up 7.8% over the past year.^[2]
• Only technology and communication services fell in October.^[1]
• Truist's Keith Lerner sees potential downside of roughly 2-8% for tech from current levels.^[1]
• Brent crude rose to about $112 a barrel and WTI to $104.^[1]
• Expectations of a Fed rate hike in December firmed after September inflation data; two Fed officials said on Friday that rates need to rise.^[1]
• US midterm elections are due next week.^[1]
• XTB's Kathleen Brookes noted that November is typically a strong month for stocks.^[2]

影响

• 已确认Investors have become stricter about the payoff from AI spending: weak earnings triggered the week's sharpest falls.
• 我们的解读If tech weakness continues, it could also hit index funds that hold many of these companies.
• 我们的解读Higher oil and expected Fed hikes could keep pressuring markets, but the link to the stock fall should be checked against new data.

仍未知

• Whether the tech sell-off continues next week.
• What the Fed will decide in December.
• How markets will react to the US elections and Middle East news.

影响到谁

United States, Global. People who hold stocks or US index funds, and anyone following the AI bubble debate

来源

1. Yahoo Finance: Stock market today: Nasdaq, Dow, S&P 500 clobbered as October closes with brutal sell-off 2026年10月30日 · 媒体
2. BBC: US tech stocks see sharp falls as AI spending nears $1tn 2026年10月30日 · 媒体