Alphabet Suffers Worst-Ever Stock Market Crash as Shares Plunge 13%

The sharp sell-off wiped approximately $482 billion off the company’s market capitalisation, making it the second-largest single-day loss in market value ever recorded by a US-listed company, according to Yahoo Finance calculations.

The only larger decline was recorded by Nvidia, which lost around $593 billion in market value on January 27, 2025, following investor concerns triggered by China’s DeepSeek artificial intelligence model.

Alphabet’s latest decline also surpassed a previous $400 billion market-value loss recorded by SpaceX on June 22. In absolute dollar terms, Thursday’s sell-off marked the largest single-day loss in Alphabet’s history, exceeding its previous record decline of approximately $275 billion on July 23, 2026.

According to Bespoke Investment Group, the latest market reaction also represented Alphabet’s steepest post-earnings stock decline since its public listing. The previous record was a nearly 10% drop in July 2008.

Mixed Financial Results Trigger Investor Concerns

Alphabet’s third-quarter earnings presented a mixed picture, with strong growth in its cloud and artificial intelligence businesses failing to offset concerns about its traditional search operations and rising investment costs.

Google Cloud delivered a particularly strong performance, with revenue more than doubling to approximately $31 billion. Meanwhile, Google’s Gemini application surpassed one billion users, highlighting the company’s expanding position in the artificial intelligence sector.

However, the company’s core search business fell short of market expectations. Search revenue increased by 12% to approximately $63 billion, compared with Wall Street forecasts of $65 billion.

Investor concerns were further fuelled by substantial spending on artificial intelligence infrastructure, including data centres and related investments. Alphabet’s free cash flow slipped into a deficit of approximately $9 billion, reflecting the financial pressure associated with its expanding AI commitments.

Pivotal Research CEO Jeffrey Wlodarczak suggested that investors may increasingly see artificial intelligence as a potential threat to Google’s traditional search business. He indicated that the latest results could reinforce concerns that AI-powered services are beginning to challenge the company’s established search model.

However, CFRA analyst Angelo Zino offered a more optimistic assessment, suggesting that the sharp decline could potentially create a buying opportunity for investors.

Technology Stocks Face Growing Market Pressure

Alphabet’s decline comes amid increasing volatility across the US technology sector. Yahoo Finance calculations based on Bloomberg data showed that US-listed companies experienced market-value losses of at least $200 billion in a single trading session on 18 occasions during 2026 through Wednesday, compared with 13 instances throughout 2025.

Alphabet has also lost approximately $1.4 trillion in market capitalisation since reaching its record valuation in May.

Meanwhile, concerns about artificial intelligence spending have extended to other major technology companies. Amazon reported accelerating growth in its cloud computing business after Thursday’s market close, but its financial results also highlighted mounting investment pressures.

Amazon Web Services (AWS) recorded revenue growth of 39%, its fastest expansion in nearly five years. However, the company’s trailing 12-month free cash flow deteriorated to a record outflow exceeding $42 billion.

Amazon shares also declined in after-hours trading, reflecting broader investor concerns about the financial costs of expanding AI infrastructure.

The latest developments suggest that investors are increasingly looking beyond artificial intelligence growth and technological innovation, focusing instead on whether major technology companies can convert their massive investments into sustainable profits, stronger cash flows and long-term shareholder returns.