SMH is the dominant semiconductor sector ETF, tracking the MVIS US Listed Semiconductor 25 Index of the largest global semiconductor companies with US listings. NVIDIA, TSMC and ASML are typically among the top holdings alongside Broadcom, Qualcomm and Texas Instruments. The fund provides what is probably the most concentrated single-sector exposure available in a major ETF — semiconductors are the enabling technology for AI, cloud computing, smartphones, automotive electronics and industrial automation simultaneously. The AI infrastructure boom has created extraordinary demand for advanced computing chips, with NVIDIA in particular dominating AI accelerator revenue, which has driven semiconductor stocks to exceptional performance. The downside is the inherent cyclicality: semiconductor inventory cycles can produce 30-50% drawdowns in the sector even in otherwise healthy markets, and overcapacity phases after periods of strong demand have historically been severe. For investors, SMH is the standard vehicle for expressing a view on semiconductor sector performance, AI infrastructure spending or technology cycle positioning. Its concentration means it amplifies both the upside and downside of semiconductor cycle movements, requiring conviction and appropriate position sizing relative to more diversified technology exposure.
