The stock market has spent much of 2026 climbing a wall of worry. Geopolitical tensions, stubborn inflation, and questions about economic growth have all taken turns rattling investors. Yet the major indexes continue hovering near record highs, driven largely by enthusiasm surrounding artificial intelligence.
Companies are pouring hundreds of billions of dollars into data centers, chips, and AI infrastructure, while investors reward those investments with ever-higher valuations. Now one Wall Street research firm is warning that the Federal Reserve may be helping fuel the rally in ways that could create problems down the road.
The Fed Is Missing AI’s Inflationary Side
In a recent client note, BCA Research Chief Strategist Peter Berezin challenged the growing belief that AI will automatically reduce inflation and justify lower interest rates. According to Berezin, the opposite may be true in the near term. AI demand is increasing costs for critical inputs such as electricity and memory chips, creating inflationary pressures that the Fed may be underestimating.
Here’s what the numbers tell us:
| AI-Driven Cost Pressure | Why It Matters |
| Electricity demand from data centers | Raises power costs and infrastructure spending |
| Memory chip demand | Keeps semiconductor pricing elevated |
| Rising stock prices | Encourages consumer spending and risk-taking |
Berezin argues that higher stock prices are creating a wealth effect. When investors see portfolio balances rise, they tend to spend more freely, which can keep inflation running hotter than policymakers expect. If the Fed keeps rates too low while this process unfolds, asset prices could become detached from fundamentals.
Why This Isn’t a Dot-Com Repeat — Yet
That said, BCA is not predicting an imminent crash. The firm’s MacroQuant model indicates stocks are overbought but have not reached levels typically associated with an approaching bear market. That’s an important distinction for investors. Overbought markets can stay overbought for months, particularly when earnings growth remains strong.
Surprisingly, Berezin’s bigger concern isn’t valuation alone. He has previously described today’s AI frenzy as more of an “earnings bubble” than a traditional valuation bubble. In other words, investors may be assuming current profit growth rates can continue indefinitely. History suggests that rarely happens.
Meanwhile, AI-related capital expenditures continue to surge. Reuters recently reported that projected spending by major technology companies has climbed into the trillions of dollars, raising questions about whether future demand will justify the investment.
The Two Risks Investors Should Watch
BCA believes there are two scenarios that could eventually cool inflation and lower interest rates. Neither is particularly attractive.
The first is an AI capital spending bust. If companies discover that returns on massive AI investments fall short of expectations, spending could slow sharply. That would hurt semiconductor suppliers, data center operators, and many of today’s market leaders.
The second risk is rising inequality. If AI concentrates economic gains among a relatively small group of companies and workers, overall consumer demand could weaken despite productivity improvements.
Granted, both outcomes remain hypothetical. The AI boom is still generating enormous investment, and many businesses are only beginning to deploy the technology at scale.
Key Takeaway
BCA Research isn’t saying investors should run for the exits. The firm’s message is more nuanced. The AI boom may be creating inflationary pressures that the Federal Reserve is overlooking, and low interest rates could amplify speculative behavior in the stock market. Stocks appear stretched, but not yet at levels historically associated with major bear markets.
For smart investors, the takeaway is simple: enjoy the AI-driven rally, but keep an eye on fundamentals. If earnings growth, AI adoption, and capital spending continue to justify today’s valuations, the bull market can keep running. If those pillars weaken, today’s enthusiasm could turn into tomorrow’s hangover.
Ultimately, the Fed may not create the bubble, but its policies could determine just how large it becomes — and then unintentionally burst it.
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