Alphabet Stock Drops Over 12% as AI Spending Weighs on Earnings

Alphabet’s quarterly results missed estimates on October 28, 2026, just as investors questioned whether its search business can hold up as AI reshapes how people find information. The stock fell more than 12% the next day, its worst session on record, and slid again on Friday. Amazon’s negative free cash flow added to the pressure on tech valuations.

A Quarter Short of Expectations

According to Bloomberg Television, Alphabet‘s quarterly revenue and earnings fell short of analyst estimates. A segment of “Bloomberg The Close” on the report, titled “Breaking Down Alphabet’s Disappointing Earnings Report”, featured Scott Devitt, chief executive and senior research analyst at Rosenblatt Securities. The segment focused on how AI-related spending is weighing on the group’s revenue and profit.

The central question for investors was not only the level of the results but what they signal about the business. Could Alphabet protect its search franchise as artificial intelligence changes how users look for information? Search has historically been the engine of the company’s advertising revenue, so any erosion in that segment would reverberate through the entire valuation.

Bloomberg’s analysis framed the quarter as a case where AI spending was growing faster than the returns it generated, an argument that resonated with a market already sensitive to capital intensity across the sector.

Reading the Market Moves With Care

On October 28, 2026 at 20:06 UTC, Bloomberg published an article titled “Google Erases a Record $500 Billion as AI Eats Into Sales”, while the page header read “Alphabet’s (GOOGL) AI Spending Outpaces Returns, Pressuring Revenue, Profit”. The headline describes a record $500 billion loss in market value. The excerpt available does not specify whether that figure reflects an intraday valuation or a closing price.

CNBC reported that the stock fell more than 12% on October 29, its worst session on record. That decline is consistent with a $500 billion erasure, so the two figures do not contradict each other. The table below consolidates the moves cited by the sources, with their timing, because they are not directly comparable.

The macro backdrop was nonetheless supportive. According to Vestact’s analysis published on Investing.com on October 30 at 11:38, the United States had reported third-quarter GDP growth of 3.4%. Despite that data, equities declined because of Google’s disappointing results. Vestact’s end-of-day recap showed the S&P 500 down 0.30% and the Nasdaq Composite down 1.38% in the prior session, while the JSE All-Share, the Johannesburg Stock Exchange benchmark, rose 0.25%.

Amazon: AI Investment Weighs on Cash Flow

Amazon also posted disappointing quarterly results. According to CNBC, the company missed expectations for third-quarter revenue and earnings. It nonetheless maintained its 2026 capital expenditure forecast at $220 billion, keeping the debate over AI returns firmly in focus.

Amazon recorded negative free cash flow for a second consecutive quarter, with a marked deterioration from the previous period. Vestact explicitly links the decline to Amazon’s heavy AI investment program.

Quotes Captured at Different Times

Amazon shares were already lower in extended trading on Friday morning, and U.S. stock futures were sharply negative, a move Vestact attributed to Amazon’s weak numbers. During the regular session, CNBC noted a decline of about 1%. The gap with the 2.25% shown on the Investing.com scoreboard reflects different quote times, not a disagreement on the direction of the move.

Semiconductors and Doubts Over Returns

Pressure intensified on Friday. CNBC reported that the Nasdaq Composite fell more than 2.5%, extending a difficult week for technology stocks. A page on Investing.com showed the S&P 500 down 1.92% and the Nasdaq Composite down 3.15% at the same time, without a clear timestamp, so those quotes may reflect live trading or pre-market levels rather than a settled close.

Chip stocks also retreated. Nvidia lost 4%, Broadcom about 6% and Qualcomm 12%. CNBC linked the selloff to a growing unease about the level of AI investment across the industry and the timing of its future profitability. Rising sector spending has fueled concern about whether it can generate adequate returns.

Matt Orton, chief market strategist at Raymond James, summarized the market’s position on CNBC’s “Squawk Box Europe”:

“I don’t think this is a moment of reckoning but I think it’s a moment where investors should take a long thought about how positioning across the space still remains crowded even though the fundamentals are strong.”

Matt Orton, Chief Market Strategist, Raymond James

That message captures the current dilemma: fundamentals that still look solid, alongside concentrated positioning that leaves the sector exposed to even modest disappointments.

Outlook and Scenarios

The main lesson of this sequence is how sensitive the market has become to any challenge to the AI profitability narrative. Alphabet and Amazon face the same trade-off: funding costly infrastructure while demonstrating a visible return on that spending. Amazon’s negative free cash flow and its $220 billion capex guidance make that question more pressing.

Three scenarios stand out. In a stabilization case, upcoming reports would show tangible AI monetization in search and cloud, easing pressure on valuations. In a consolidation case, the stock would remain volatile until visibility on spending improves. In a downside case, further margin compression or a revision of capex plans would fuel a broader correction across semiconductors. Tracking free cash flow trends will remain decisive.

Sources

• Investing.com, Vestact analysis (October 30, 2026)
• Google redirect link to the source article
• CNBC (October 30, 2026)
• Bloomberg (October 28, 2026)

Cet article est publié à titre informatif et éducatif. Il ne constitue en aucun cas un conseil en investissement. Faites vos propres recherches (DYOR) avant toute décision.