SOXX DCA Backtest
If you'd invested $700 every month, how long to $1M?
SOXX (iShares Semiconductor ETF) bundles around 30 U.S.-listed semiconductor companies. Manager iShares (BlackRock) launched it in 2001, and it tracks the ICE Semiconductor Index. It holds everything from chipmakers building data-center and AI chips — Nvidia, Broadcom, Qualcomm, AMD — to the equipment and materials companies that support them, making it a concentrated bet on the health of the semiconductor industry.
Investing since Dec 2013, that's about $1.01M today · invested $106.4K · annualized +30%
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A concentrated bet on the entire semiconductor industry
SOXX narrows the field down to roughly 30 U.S.-listed semiconductor companies. Compared with QQQ (the Nasdaq-100's 100 non-financial large caps) or a broader information-technology ETF, it's a much narrower basket concentrated in a single industry. That means it tends to climb far more steeply than the market average when the semiconductor cycle is strong — and fall just as hard when it turns.
Its holdings span the whole chip supply chain: companies that design and manufacture semiconductors directly (Nvidia, AMD, Qualcomm, and others), plus the companies that supply the equipment and materials needed to make those chips (Applied Materials, Lam Research, and others). You're spread across several links of the same chain, but the outcome still hinges on one big variable — the health of the semiconductor industry as a whole.
The AI boom and extreme concentration
Over the past few years, the boom in AI server and data-center spending has driven up the share prices of related chip companies so much that a handful of names now make up a noticeably larger slice of SOXX. Because the index weights holdings by market cap, the price action of just a few companies now drives a bigger share of SOXX's overall performance.
That concentration cuts both ways. If those companies keep performing well, SOXX rises sharply right along with them — but if disappointing news hits even a few of them, the whole fund can swing hard. It's worth remembering that what feels like 'diversified exposure to semiconductors' can, in practice, be heavily concentrated in just a handful of names.
Semiconductors are a cyclical industry
The semiconductor industry has traditionally been described as a 'cyclical industry,' where supply and demand swing on a multi-year rhythm. Smartphone and PC replacement cycles, data-center buildouts, and automotive chip demand overlap and diverge over time, producing repeated booms and busts — and SOXX's share price has swung sharply along with each one.
Nobody can guarantee how long the current AI-driven demand will stretch this cycle. Given that past semiconductor booms didn't last forever either, it's more realistic to approach SOXX as 'a bet on a highly volatile industry cycle' than as 'an asset that steadily grinds upward.'
Taxes and your start date
SOXX is a U.S.-listed ETF, so as a USD investor there's no currency conversion to think about the way there would be investing from abroad — your results are already in dollars. What does matter is cost and taxes: how capital gains and any distributions are taxed depends entirely on your country of residence and personal situation, so it's worth checking with a local tax professional rather than assuming one flat rate applies. This isn't tax advice.
Because SOXX is so volatile, the outcome can differ sharply depending on when you start. Beginning near the tail end of a boom versus near the bottom of a downturn can produce wildly different results even over the same accumulation period. Past performance doesn't guarantee the future, so it's worth comparing several different start dates yourself in the calculator above. This article is for information, not investment advice.
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This content is for informational purposes and is not investment advice or a recommendation. You are solely responsible for your investment decisions.