Wall Street is increasingly worried about the hundreds of billions of dollars Big Tech is spending on artificial intelligence, especially as a resurgence of the war in Iran darkens the global macroeconomic outlook. The Magnificent 7 technology companies, including Alphabet and Tesla, experienced their biggest one-day drop since April 2025 on Thursday, losing $797 billion in market value, with the S&P 500 Index down 1.2% and the Nasdaq 100 Index sinking 1.9%. This sell-off was triggered by earnings reports from Alphabet and Tesla after the market close on Wednesday, which led to doubts about the longevity of the AI trade that has fueled the stock market for over three years.
Alphabet projected capital spending of up to $205 billion for 2026, while Tesla CEO Elon Musk suggested 2026 would be a "massive capex year" following profits that fell significantly short of analyst expectations. The approximately $45 billion Alphabet spent in the second quarter resulted in its first negative cash flow as a public company, raising concerns among investors like Jason Lemire of Bold Wealth Partners, who noted the increased risk for what was previously a "cash-generation machine." Tesla's shares plummeted 15% on Thursday, marking its worst day since March 2025, and Alphabet dropped 7.1%, its largest decline since May 2025.
Other major AI spenders, including Microsoft, Amazon.com, and Meta Platforms, also saw declines of 2.2%, 4.6%, and 3.4% respectively. These companies are scheduled to report earnings next week, which could provide further insight into the extent of their AI investment. Conversely, Apple, which has been less aggressive in its AI capital commitments, experienced the shallowest decline among the Magnificent 7, with its shares climbing 11% in July and 18% in 2026, as investors increasingly favor companies with clearer returns on investment. Ken Mahoney, CEO of Mahoney Asset Management, characterized the situation as a "perfect storm" due to the current spending levels without clear returns and the escalating Middle East conflict.
Investors are now demanding clearer evidence that these substantial expenditures will yield commensurate returns, a significant shift from past sentiment where higher spending announcements were often rewarded. This re-evaluation by hedge funds and institutional investors considers the rising capital requirements, uncertain monetization prospects, and increasing borrowing commitments that could alter the risk profile of these companies. The Magnificent 7 index is now down 11% from its late May peak, erasing $2 trillion in market value, indicating a fundamental change in how investors view these once highly cash-generative businesses, now seen as increasingly capital-intensive infrastructure plays.
