SOXX has surged during the AI boom, but it lagged the S&P 500 for its first 15 years. Its record shows the potential gains and risks of investing in one industry.
A $5,000 investment in the iShares Semiconductor ETF on July 10, 2001, was worth $118,240 at the market close on September 25, 2026, according to the figures provided. The climb was far from steady. For much of the fund's early history, it trailed the broader U.S. stock market.
That history matters to investors drawn to SOXX by the artificial intelligence boom. Its recent run does not erase years of underperformance. A fund focused on one industry can also move differently from a broad-market index.
A late-September market recap noted that SOXX's ten largest holdings accounted for more than 61% of the portfolio, underscoring how much the fund's results can depend on its biggest positions.
A late-arriving growth engine
In its first 15 years, SOXX rose 30.7%. The S&P 500 gained 80.3%. The gap was stark.
Investor interest in AI grew over the following years. Since June 2021, SOXX has gained about 263%, while the S&P 500 rose 74%, based on the comparison in the article's reported figures.
That is a historical comparison, not a forecast. The reported figures also put SOXX's gain at more than 90% from the start of 2026 as of the time of writing, despite concern about a possible AI bubble. Interest in semiconductor exposure remains strong. That alone does not show how long demand or share prices will keep rising.
Market notes dated September 28-29, 2026, reported substantial outflows from thematic chip ETFs, including a one-day withdrawal of about $270 million from SOXX. The reported flow is a snapshot of investor activity, not evidence of what will drive the fund's future returns.
What the fund owns
SOXX holds 30 companies and charges a 0.33% expense ratio. Since June 2021, it has tracked the NYSE Semiconductor Index. Intel, Advanced Micro Devices, and Micron Technology are its three largest positions. Together, they make up 28% of the fund. As of September 24, 2026, iShares classified 83.17% of the portfolio as semiconductors and 16.68% as semiconductor equipment, according to its SOXX fund breakdown.
Provider snapshots do not fully match. iShares lists 30 holdings, while Schwab's listing shows 34 holdings and about $41.8 billion in assets. Later-September market profiles put SOXX's assets under management at roughly $48 billion to $49 billion. These figures are separate snapshots, not one reconciled total. Schwab's holdings listing gives its separate holding count and asset figure.
SOXX offers focused exposure to semiconductor stocks. It is not a diversified substitute for the whole stock market. Its results depend heavily on one industry and, in meaningful part, a small group of companies. Investors comparing funds should look beyond recent returns. Holdings, costs, and concentration shape each fund's exposure. For a different structure in the same sector, this fund comparison examines VanEck's Semiconductor ETF and its large Nvidia and TSMC positions.
Returns come with timing risk
The historical value of $118,240 shows what long-term ownership through a major industry expansion could have produced. It does not show what a new investor will earn. The comparison does not say whether returns are adjusted for inflation or taxes. Someone buying after a sharp rally starts from a different point than an investor who held through the fund's early years.
Sector funds can rise sharply when their industry leads. They can also lag when that industry falls out of favor. SOXX's record shows both outcomes: it underperformed the S&P 500 in its first 15 years, then delivered a much stronger result in the period that began in 2021. Investors should weigh that volatility against their time horizon, risk tolerance, and broader portfolio. Past performance is no promise.
An expense ratio is the annual fund operating cost as a share of assets. SOXX's stated rate is 0.33%. That figure helps investors compare funds, but it does not measure overall risk or guarantee future results. Holdings and index exposure matter too. The top three positions make up 28% of the fund. SOXX is a direct bet on semiconductor companies. Its long record calls for patience, but it does not prove the next stretch will look like the last.
