⚠ Priced for PerfectionHigh threat

The last and most immediate risk is not about the business but about its price. ASML's monopoly and its central role in the AI boom have driven a dramatic re-rating: the stock trades at about 53 times¹ trailing earnings — roughly €1,473 a share and a ~€569 billion market value in September 2026, up enormously over the prior year — a multiple that prices in years of continued strong growth. This is a wonderful business, arguably the best moat in technology, but even the best business can be a poor investment at the wrong price, and a ~53× multiple leaves little room for disappointment.

The danger is twofold. First, the earnings the multiple is applied to are themselves elevated by a boom, so a cyclical downturn would compress both the earnings and the multiple at once. Second, a valuation this demanding assumes the AI-driven acceleration continues, High-NA ramps, China does not deteriorate further, and the 2030 growth targets are met — a stack of favorable assumptions, any of which slipping would leave the stock exposed. None of this impugns the moat, which is genuine and wide; it is a statement about expectations. The market is pricing ASML not merely as the monopoly it is but as a monopoly whose golden decade is assured, and paying a premium for that certainty. An investor buying today owns an extraordinary business, but one where a great deal of good news is already in the price — so the risk is less that the moat fails than that the future, however bright, fails to be quite bright enough to justify what the market has already paid for it.