A key red flag in the AI sector is circular financing, where a company like NVIDIA invests in a startup that then uses the funds to purchase NVIDIA's products. This creates a closed loop that can artificially inflate revenue and demand metrics, a tactic reminiscent of the dot-com bubble.
The current AI boom differs from the dot-com era. While unprofitable startups show bubble-like valuations, established tech giants like NVIDIA and Microsoft are generating massive cash flow. This means parts of the market are in a bubble, while the core is anchored by profitable, cash-rich companies.
To capitalize on the AI boom while mitigating risk, investors should focus on 'enablers'—companies providing essential infrastructure like semiconductors, data centers, and cloud services. This 'picks and shovels' strategy avoids betting on specific application-level winners, which was a losing strategy for many dot-com investors.
Warren Buffett's market indicator, comparing total stock market valuation to GDP, is now over 200%. This far exceeds the 150% peak during the dot-com bubble, suggesting the entire market is in historically overvalued territory. This amplifies the systemic risk of a potential AI-led correction.