Beyond the AI Hype: Why Old-Economy Stocks are Surging in the US

The global investment narrative has long been dominated by tech giants like the "Magnificent Seven" and the emerging "MANGOS" group. However, recent market data suggests a significant rotation is underway, as capital moves away from high-flying tech stocks toward undervalued small-caps and traditional industrial sectors.

The Great Rotation: Tech Stagnation vs. Old-Economy Growth

For much of 2023 and 2024, the Magnificent Seven (Meta, Amazon, Apple, Nvidia, Google, Microsoft, and Tesla) drove over 50% of the S&P 500's gains. But the momentum has shifted drastically. In 2025, these heavyweights contributed only 40% of the index's movement, and for the current year, their collective performance has been underwhelming, with many up only 0.6%. Specific outliers include Meta, which is down nearly 13%, Microsoft, down 21%, and Tesla, down approximately 11%.

In stark contrast, "boring" sectors are providing the market's real backbone. The Dow Jones Transportation Average (DJTA)—comprising airlines, logistics, freight, and car rental companies—has surged by 30.2%. Similarly, the Russell 2000, representing US mid- and small-cap stocks, has climbed 20%, significantly outperforming the S&P 500’s 9.5% gain.

The Semiconductor Paradox and the AI Investment Cycle

While the semiconductor and hardware sector remains a dominant force—accounting for nearly 70% of the S&P 500's movement this year—investors are cautioned against complacency. The current boom is fueled by a massive $800 billion wave of AI-related capital expenditure (CapEx).

However, industry veteran Devina Mehra warns that the semiconductor industry is notoriously cyclical and capital-intensive. Unlike consumer goods companies that build on stable year-on-year revenue bases, hardware companies supply capital assets. When the current AI investment cycle peaks, there is a high probability that buyers will scale back spending. Given that total CapEx from these buyers was only around $150 billion just a few years ago, the current $800 billion surge may be a temporary peak rather than a new permanent baseline, potentially leading to a sharp revenue crash for suppliers.

Why Traditional Valuation Metrics May Fail

A critical takeaway for investors is the danger of applying standard valuation tools to cyclical industries. Mehra notes that calculating a Price-Earnings-to-Growth (PEG) ratio for semiconductor companies is often misleading. While PEG is a useful metric for consumer-facing companies with predictable growth, it fails to account for the volatile, "boom-and-bust" nature of capital equipment providers.

For Indian investors looking at global markets through direct stocks or feeder funds, the lesson is clear: relying on a handful of popular tech names is a risky strategy. Market themes—whether they involve specific countries, industries, or asset classes—are transient.

Key Takeaways

  • Market Rotation is Real: While tech giants like Microsoft and Meta have seen significant pullbacks, "old-economy" sectors like transportation and US small-caps are seeing double-digit growth.
  • The AI Cycle Risk: The semiconductor boom is driven by an $800 billion AI CapEx wave, but the cyclical nature of hardware means revenues could crash once this investment cycle cools.
  • Diversification is Essential: Investors should avoid over-concentration in popular tech narratives (Mag 7/MANGOS) and recognize that market leadership shifts constantly between industries and asset classes.