⚠ The Semiconductor Cycle Is UnavoidableHigh threat

For all its structural advantages, ASML cannot escape the fundamental cyclicality of the industry it serves, and this is the single most important thing to hold in mind about the business. Semiconductor demand moves in powerful cycles of boom and bust, and chip-equipment spending is the most volatile part of it — amplified at the top by customers racing to add capacity and at the bottom by their slamming on the brakes. ASML's backlog, its service annuity, and its monopoly all soften the swings, but none eliminates them: the company's revenue and, far more, its order flow rise and fall with the capital-spending decisions of a handful of customers whose own fortunes swing violently.

The current environment illustrates the double edge. The AI build-out has driven demand to extraordinary highs, prompting ASML to raise guidance twice and the stock to re-rate to over fifty times earnings — but a valuation and an earnings base inflated by a boom are exactly what a downturn deflates. If the AI investment cycle cools, digests, or disappoints, ASML's customers would cut their capacity plans, orders would soften, and the company's revenue growth — and its rich multiple — would come under pressure together, the same double-barreled reversal that punishes any cyclical priced for its peak. The monopoly guarantees ASML captures essentially all of whatever equipment demand exists; it does not guarantee that demand is steady, and history says emphatically that it is not. An investor in ASML owns the best possible business in a cyclical industry — but a cyclical industry nonetheless, and one whose current boom the price — north of 50 times earnings¹ — has largely extrapolated.