HomeInternational FinanceBad start | US stocks plummeted in September, Nvidia's market value evaporated...

Bad start | US stocks plummeted in September, Nvidia’s market value evaporated by $280 billion

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Event Summary (September 2024):
The U.S. stock market faced a sharp downturn as September began, with technology stocks leading the losses. Nvidia, the AI chip giant, experienced the largest single-day market value decline in U.S. history, losing $279 billion in market capitalization after its shares plunged 9.5%. The sell-off occurred following a quarterly forecast that disappointed investors who had high expectations fueled by Nvidia’s meteoric rise this year due to the growing demand for artificial intelligence (AI) technologies. This loss not only erased a significant portion of Nvidia’s year-to-date gains but also shook investor confidence in the broader tech sector.

What Drove Nvidia’s Market Value Plunge?

Nvidia’s recent rise to prominence has been fueled by its position as a leader in the AI space. The company’s chips are widely used in the development of generative AI models, such as ChatGPT, and have become essential in AI-driven industries like autonomous driving and data centers. As a result, Nvidia’s stock had almost tripled in 2024, making it one of the most valuable companies in the world. However, the latest earnings report and forward guidance did not meet the lofty expectations set by investors, sparking concerns about whether Nvidia’s explosive growth can be sustained in the near term.

This cautious outlook, combined with a broader market selloff, led to Nvidia’s stock falling 9.5% on September 3, 2024, a drop that wiped out $279 billion in market value. This is the largest one-day market value loss for any U.S. company, surpassing the previous record set by Meta Platforms when it lost $232 billion in February 2022. While Nvidia’s stock is still up by more than 100% in 2024, this recent loss has raised questions about the sustainability of the AI-driven rally.

Broader Market Impacts and Investor Sentiment

The broader U.S. stock market also suffered, with the Nasdaq Composite falling 3.3% and the S&P 500 dropping 2.1% on the same day. The tech sector, which had been leading market gains throughout the year, saw significant declines as investors reassessed their positions. Other major tech companies like Apple, Microsoft, and Alphabet also experienced losses, contributing to the overall market downturn.

The market turbulence is further exacerbated by concerns over an economic slowdown. The latest data from the Institute for Supply Management (ISM) showed weaker-than-expected manufacturing activity, raising fears that the U.S. economy could be heading toward a recession. The PHLX Semiconductor Index, which tracks major chipmakers, dropped by 7.75%, its largest single-day decline since 2020. This reflects the market’s growing unease about the impact of rising interest rates and weakening demand on tech companies, particularly those with high valuations like Nvidia.

Investor Outlook Amid Market Volatility

Investors are now grappling with how to navigate a volatile market environment. Many are beginning to question whether the immense capital being poured into AI will yield the necessary returns to justify the current valuations of companies like Nvidia. Analysts from BlackRock noted that while AI remains a transformative technology, the large investments being made may take longer to pay off, which could temper investor enthusiasm in the short term.

Additionally, the broader economic outlook remains uncertain as the Federal Reserve prepares for its next policy meeting in mid-September. While many investors expect the Fed to cut interest rates by 25 basis points, concerns about the overall strength of the U.S. economy persist. With the labor market slowing and manufacturing data pointing to a potential recession, investors are watching closely to see how the Fed will respond.

The recent market downturn highlights the fragile nature of the current stock rally, particularly in the tech sector. While AI has been a major driver of market gains, the sharp drop in Nvidia’s stock serves as a reminder that valuations can be volatile when expectations are not met.


Nvidia’s historic loss of $279 billion in market value signals a potential turning point for tech stocks, especially those tied to AI. The broader market selloff reflects growing concerns about the sustainability of the AI boom, as well as fears of a broader economic slowdown. Investors will need to stay cautious as they assess future developments, particularly with key economic data and the Federal Reserve’s next policy moves on the horizon. As the market continues to grapple with these uncertainties, volatility is likely to remain a defining feature in the months ahead.