The iShares Semiconductor ETF experienced a remarkable 40% gain over the calendar year 2025, according to S&P Global Market Intelligence. This performance was driven by robust demand for AI-focused chips, with the fund’s largest constituents—each representing over 7% of net assets—delivering substantial contributions. Micron Technology’s high-bandwidth memory business saw revenue more than double, propelling its share price to triple by year-end. Nvidia and AMD also reported record quarterly sales tied to data-center AI deployments, further underpinning the ETF’s ascent. After an early-March dip on tariff fears, the ETF rebounded following a major policy announcement, then climbed steadily through the fall before end-of-year volatility as valuation concerns surfaced in the broader tech market.

Year-to-date through January 15, the ETF has added 11.8%, signaling continued investor appetite for semiconductor exposure as AI and advanced computing demand intensifies. Taiwan Semiconductor Manufacturing’s latest results confirmed wafer shipments up 18% year-over-year, reinforcing semiconductor order books. The fund’s annual index rebalance in March is expected to incorporate emerging fabless names with rapid AI-chip market share gains, potentially enhancing returns. With global chip capital expenditure projected to rise by mid-teens this year and data-center operators planning to expand AI infrastructure, investors position the ETF for further upside absent a broad technology downturn.