In the global financial landscape, the artificial intelligence sector is experiencing unprecedented growth, raising questions about the potential formation of a financial bubble. According to the analysis by David Pascucci, market analyst at XTB, the first noticeable element is the extreme capitalization reached by major American tech stocks. Nvidia and Apple have surpassed $4 trillion in capitalization, while Alphabet (Google) and Microsoft stand above $3 trillion. Amazon follows with over $2 trillion, and Meta stops at $1.5 trillion.
These numbers are impressive when compared to historical competitors: AMD stops at 348 billion dollars and Intel at 176 billion. Even compared to European giants, the gap is clear: ASML, a global leader in chip machinery production, capitalizes at “only” 400 billion dollars. The comparison becomes even more striking when looking at national public debts: the Italian debt, for example, is around 3,000 billion euros, less than the market capitalization of Nvidia, Apple, or Google individually.
The gap between big tech AI and the rest of the market becomes even more evident when considering entire stock markets: the Italian stock exchange is valued at just over $1,000 billion with 143 listed companies, while the German market slightly exceeds $2,800 billion with 375 companies. This disproportion is a key indicator fueling doubts about the presence of a bubble in the AI sector.
Fundamental Indicators: The Buffett Indicator Under the Lens
Another fundamental tool for assessing the presence of a bubble is the Buffett Indicator, which relates the total value of the U.S. stock market (index Wilshire 5000) to the U.S. GDP. Historically, a value above 150% is considered a signal of market overvaluation. This level was reached during the dotcom bubble in 2000, corresponding to the second standard deviation.
Today, however, the situation is even more extreme: the Buffett Indicator is at 2.4 times the standard deviation, well beyond 150%, reaching approximately 220%. This data indicates that the American stock market is in an unprecedented overvaluation phase. However, it is important to emphasize that this indicator captures the current state but is not predictive of future market movements.
Nvidia and the Dynamics of Competition
The Queen of AI and the Threat from Competitors
In the AI sector, Nvidia has established itself as the undisputed leader, being the first to reach the $5 trillion market capitalization mark. Its revenue growth has been remarkable: from 2023 to 2024, revenues increased from approximately $60 billion to $130 billion, with projections for this year aiming at $200 billion. This represents a growth of between 50% and 60%, slightly lower than in previous years, indicating a natural slowdown rather than a structural weakness.
This slowdown could be attributed to the entry of new competitors in the AI hardware market. AMD and Intel, long-standing rivals of Nvidia, are indeed gaining ground. Alphabet (Google) is also decisively entering the hardware segment, increasing competitive pressure.
Returns Compared: Who is Growing the Most?
Analyzing the year-to-date returns of the main tech stocks involved in AI reveals an interesting picture. If Nvidia is considered the benchmark with a growth of about 30%, Intel recorded a +82%, AMD a +78% and Alphabet (Google) a +69%. These figures highlight how Nvidia’s historical competitors are beginning to carve out an increasingly significant share of the market.
The other megacaps, however, have shown lower returns compared to Nvidia: Microsoft stands around +17%, Apple at +15%, Meta at +6%, and Amazon at +4%. This scenario suggests that competition in the AI sector is intensifying, with increasing focus on the development of data centers, dedicated hardware, and software.
Imbalances Between Prices and Fundamentals: A Growing Sector, But at Risk
Despite the strong expansion of the AI sector from a fundamental perspective, the discrepancy between market prices and the fundamental data of various companies appears increasingly unbalanced. Indicators such as the Buffett Indicator signal an overvaluation situation that is unprecedented in the history of financial markets. However, from a technical standpoint, no signs of weakness have yet emerged that would suggest an imminent bursting of the bubble.
The main indices, such as Nasdaq and S&P500, could provide clearer indications in the future, especially considering the enormous weight that big tech AI companies have within these indices in terms of market capitalization.
Conclusions: Caution and Constant Monitoring
The artificial intelligence sector remains one of the most dynamic and promising in the global financial landscape. However, the combination of extreme capitalizations, fundamental indicators at all-time highs, and increasing internal competition suggests the need for a cautious approach. Investors and analysts will need to closely monitor both fundamental data and technical signals to avoid being caught off guard by a potential bubble burst.
In this context, caution remains the watchword: the future of the AI sector will be determined by companies’ ability to sustain growth and adapt to a rapidly evolving market, avoiding the excesses that in the past have led to widespread financial crises.
Source: https://en.cryptonomist.ch/2025/11/28/is-the-artificial-intelligence-ai-sector-approaching-a-bubble-market-analysis-and-signals/
