Since the start of the current market cycle, SMH has surged approximately 49%, driven by aggressive AI infrastructure spending and persistent supply constraints. This rally has pushed SMH’s trailing price-to-earnings ratio to 42.68, well above its long-term average of around 25. The ETF’s top ten holdings now account for 73% of its assets, underscoring a high degree of concentration risk in a handful of dominant semiconductor names.

Investors are pricing in sustained double-digit earnings growth for SMH’s core components, particularly in AI-driven segments. Consensus forecasts imply revenue growth of 15% to 20% annually over the next two years for leading equipment vendors and memory suppliers. Any deviation from these projections—whether through margin compression or cyclical demand softening—could exert significant downward pressure on the ETF’s valuation, given the stretched multiples.

TSMC’s recently announced capital expenditure budget of roughly $54 billion for 2026—an increase of 32% year-over-year—signals a multiyear build-out of advanced-node capacity. This expansion benefits SMH directly, as approximately 70% of its weighting is exposed to AI infrastructure beneficiaries, including wafer-fab equipment makers, memory firms, and leading logic foundries. Continued strength in generative AI applications and high-performance computing should support SMH’s premium valuation, provided end-market demand remains resilient.