Key Highlights

● Alphabet had its worst day ever on Thursday, October 29, 2026.

● The drop erased about $500 billion in value.

● Free Cash Flow was negative $9.1 billion against negative $3.5 billion expected.

● Capital spending reached $51.4 billion.

Alphabet (NASDAQ:GOOGL) reported third-quarter results on Wednesday night, October 28, and investors did not like what they saw. Adjusted Earnings of $2.12 a share missed the consensus. Search revenue, the company's core business, came in at $63.4 billion against expectations of $64.9 billion. Total Revenue of $127.6 billion fell short of the $128.2 billion analysts had forecast.

The most striking figure was free cash flow. Alphabet reported negative $9.1 billion, far worse than the negative $3.5 billion analysts expected. Capital spending reached $51.4 billion in the quarter, up $6.5 billion from the prior quarter, as the company poured money into artificial intelligence infrastructure. An $8.7 billion loss on Equity securities also cut earnings by $0.55 a share.

A record selloff

On Thursday, October 29, the stock plunged in what was described as its worst day ever, erasing about $500 billion in market value. Software company ServiceNow (NYSE:NOW) had its own worst day on record in the same session.

Alphabet extended its slide on Friday, October 30, 2026, falling modestly in a follow-through move. A market headline said the week was its worst since 2011. Alphabet and Meta (NASDAQ:META) are now trading well below their 52-week highs.

Cash burn becomes the story

Alphabet's report set the tone for a week in which investors fixated on how much the largest technology companies are spending on AI and how much cash is left over. Amazon (NASDAQ:AMZN) followed on Thursday night with trailing 12-month free cash flow of negative $42.4 billion. Meta, which reported the previous week, posted its first negative quarterly free cash flow since 2012.

A market analyst said: "Together, Amazon, Google, Microsoft (NASDAQ:MSFT) and Meta spent more than $200bn in the third quarter alone." She warned that "the risk is that higher financing costs will absorb more of the cash generated."

Microsoft stood apart. A market strategist said "Microsoft's AI spending was rational and measured, and it has remained cash-flow positive."

The broader damage

By Friday, the concern had spread across the market. Intel (NASDAQ:INTC)'s cash-burn warning set off a chip selloff, and Amazon's results added to pressure on megacaps. The S&P 500 fell 140.32 points to 7,580.07, the Dow dropped 572.25 points to 51,770.31, and the Nasdaq Composite lost 747.73 points to 25,437.00, its worst day since June 5. Communication services, the sector that includes Alphabet, was among the day's weakest.

October ended with the Nasdaq posting its worst month since March 2025, while the Dow gained for the month. The Nasdaq-100 lost roughly $2 trillion in Market Value in October, according to market data.

A senior market strategist said: "The love-hate relationship with tech and AI continues, and investors are becoming more discerning following earnings." A senior market analyst added that "strong AI Demand is no longer enough on its own."

What to watch

Apple (NASDAQ:AAPL) reports on Monday, November 2, after the close. Investors will be looking for whether any of the largest companies can pair AI ambitions with steady cash generation.

For Alphabet, the next questions are whether capital spending keeps climbing and whether search revenue regains momentum. The midterm elections on Tuesday and the October jobs report on Friday, November 6, will also shape the rate backdrop, with markets pricing a December rate hike from the Federal Reserve.