Why XLK’s Next Rebalance Won’t Fix Its Massive Concentration Problem
XLK markets itself as diversified large-cap tech exposure, but a closer look at the holdings reveals a chip bet so large that even a quarterly rebalance may do nothing to shrink it.
The Technology Select Sector SPDR Fund (NYSEARCA:XLK) markets itself as diversified large-cap tech exposure. The June 30 holdings tell a narrower story.
Nvidia (NASDAQ:NVDA | NVDA Price Prediction) sits at 15% of net assets, the fund’s largest single position. Semiconductor and semiconductor-equipment names together carry a weight just over three times that, meaning the chip industry is closer to 42% of the portfolio than the roughly 15% an Nvidia-only glance would suggest.
That gap matters because XLK’s benchmark applies concentration caps at the company level, not at the industry level. A shareholder who assumes the S&P methodology delivers broad diversification gets company-cap discipline layered on top of an unbounded chip bet.
Translated into dollars against the fund’s $123.9 billion in net assets, the semiconductor sleeve is worth roughly $52 billion. That is a bigger single-industry position than the total assets of most sector ETFs. Before deciding whether XLK belongs in your portfolio, you need to know what you are actually buying.
Chip Weight Behind the Nvidia Headline
Beyond Nvidia, the semiconductor lineup runs deep. Micron (NASDAQ:MU) is 5%, Broadcom (NASDAQ:AVGO) is 5%, AMD (NASDAQ:AMD) is 5%, and Intel (NASDAQ:INTC) is 4%.
Semiconductor equipment adds another layer: Applied Materials at 3%, Lam Research at 3%, and KLA at 2%. Add Texas Instruments, Marvell, Qualcomm, Analog Devices, Teradyne, and Microchip, and the sub-sleeve keeps growing.
Stack it all together and the reason the sector weight runs to roughly three times Nvidia’s stake becomes obvious. XLK behaves as a chip fund with Apple and Microsoft strapped on top.
Why the Next Rebalance May Not Fix the Concentration
XLK’s benchmark rebalances quarterly, and S&P’s methodology limits individual company weights through concentration tests. It does not set an industry-wide semiconductor cap.
If Nvidia’s weight is trimmed at the next reshuffle, the released dollars have to land somewhere inside the technology sector. In practice, that often means AMD, Broadcom, Micron, or the equipment names, because those are the biggest liquid targets available.
A company-level cap can therefore leave chip-cycle exposure largely intact even after the weight of the largest name comes down. Investors expecting diversification from a rebalance may find they still own the same cyclical bet, only spread across more tickers.
Performance Shows the Chip Tilt Cutting Both Ways
The chip tilt has been rewarding lately. XLK is up 31% year to date and 39% over the past year.
Pure-play chip ETFs have run faster. VanEck Semiconductor ETF (NYSEARCA:SMH) is up 56% year to date and 84% over one year. iShares Semiconductor ETF (NASDAQ:SOXX) is up 73% and 101% on the same measures.
The gap is instructive. When semis rally, XLK captures most of the move because roughly 42% of the fund is chips. When semis roll over, XLK will absorb most of the pain too, and the Apple and Microsoft ballast only cushions the edges.
Bull and Bear Case for XLK
The bull case is straightforward. XLK offers concentrated access to the AI capex build with a decade of compounding behind it, evidenced by a 151% five-year return and a 783% ten-year return. If AI infrastructure spending continues into 2027, the same industry weight that looks like risk today will keep fueling the buildout.
The buildout also runs beyond the chipmakers themselves, into the power, cooling, and networking suppliers filling the data centers (we profiled seven of them in a free report you can grab here).
The bear case is what the label hides. If the semiconductor cycle turns, roughly 42% of the fund turns with it, and Apple plus Microsoft cannot offset a chip drawdown of 2022 magnitude. For investors who want tech without the cyclicality, a broader information-technology fund or a plain S&P 500 position delivers less chip beta.
One deciding variable is the next benchmark rebalance and the pace of AI capex. If Nvidia’s weight comes down and dollars migrate to AMD, Broadcom, and the equipment names, the concentration story simply redistributes across the same industry.
Contact [email protected] for any questions or corrections.
Omor Ibne Ehsan is a writer at 24/7 Wall St. He is a self-taught investor with a focus on growth, cyclical, and dividend equities that have strong fundamentals, value, and long-term potential. He also has an interest in high-risk, high-reward investments such as penny stocks.
