Unprecedented AI CapEx Risks Toppling the Entire Stock Market. It Could Also Send the IGV ETF and Its Holdings to Record Highs.

Unprecedented AI CapEx risks toppling the stock market by raising concerns that massive spending will pressure corporate profit margins before returns materialize. The article argues that technology leaders’ multiyear investment cycle is currently penalized by markets, similar to early public skepticism around Amazon Web Services (AWS). It warns of a structural headwind: dilution in profitability margins for major S&P 500 and Nasdaq-100 constituents. The piece contrasts software/internet ETFs such as IGV and XSW, which historically show about 90% incremental margins, with physical AI infrastructure at roughly 50%. It cites Amazon’s 29% cash return on capital while borrowing at mid-single-digit rates, contrasting that with a market shift toward lower-margin infrastructure. Competitive effects could separate winners and losers in the AI trade.