SOXX vs XLK ETF holdings comparison
iShares Semiconductor ETF (SOXX) · Technology Select Sector SPDR ETF (XLK)
SOXX and XLK overlap by 36.4% by portfolio weight. The remaining 63.6 percentage points are not counted as shared holdings weight by this calculation. They share 18 stocks; the largest shared position is NVIDIA Corp. (NVDA), contributing 6.81% to the overlap.
The holdings dates differ. This can slightly understate overlap for funds tracking similar indexes.
What this means
SOXX and XLK share a material portion of their portfolio weight in the same underlying stocks. OverlapCheck labels this "moderate holdings overlap" using house ranges of 70% or more, 30% to under 70%, and under 30%. These descriptive ranges are not industry standards or investment guidance. Holdings overlap does not measure correlation, volatility, geographic or factor exposure, fees, or suitability.
Overlap by weight sums the smaller of the two funds' weights for every stock they both hold. It answers "how much of my money is in the same stocks either way?" See methodology.
This comparison covers normalized equity positions represented in the dataset. Cash, derivatives, options, structured notes, and other non-equity assets are not included, so the result is not a complete comparison of every asset or risk in either fund.
Top shared holdings
| Company | Ticker | in SOXX | in XLK |
|---|---|---|---|
| NVIDIA Corp. | NVDA | 6.81% | 14.22% |
| Broadcom, Inc. | AVGO | 6.08% | 4.66% |
| Advanced Micro Devices, Inc. | AMD | 8.09% | 4.10% |
| Micron Technology, Inc. | MU | 8.54% | 3.99% |
| Intel Corp. | INTC | 6.33% | 2.91% |
| Lam Research Corp. | LRCX | 4.89% | 2.65% |
| Applied Materials, Inc. | AMAT | 5.77% | 2.56% |
| KLA Corp. | KLAC | 5.64% | 1.61% |
| Texas Instruments, Inc. | TXN | 3.50% | 1.59% |
| Marvell Technology, Inc. | MRVL | 5.22% | 1.42% |
Holdings only in SOXX or XLK
SOXX has 12 fund-only positions representing approximately 19.2 percentage points of reported exposure; XLK has 55 fund-only positions representing approximately 56.1 percentage points of reported exposure. These are positions whose normalized security identifiers appear in one issuer file but not the other.
Largest positions only in SOXX
| Company | Ticker | Weight |
|---|---|---|
| Taiwan Semiconductor Manufacturing Co. Ltd. | TSM | 4.26% |
| Astera Labs, Inc. | ALAB | 3.02% |
| ASML Holding NV | ASML | 2.30% |
| Credo Technology Group Holding Ltd. | CRDO | 2.01% |
| Entegris, Inc. | ENTG | 1.22% |
| ASE Technology Holding Co. Ltd. | ASX | 1.22% |
| MACOM Technology Solutions Holdings, Inc. | MTSI | 1.17% |
| United Microelectronics Corp. | UMC | 1.02% |
| ARM Holdings plc | ARM | 0.79% |
| STMicroelectronics NV | STM | 0.79% |
Largest positions only in XLK
| Company | Ticker | Weight |
|---|---|---|
| Apple Inc | AAPL | 12.54% |
| Microsoft Corp | MSFT | 10.07% |
| Cisco Systems Inc | CSCO | 2.95% |
| Palantir Technologies Inc A | PLTR | 2.67% |
| Palo Alto Networks Inc | PANW | 1.85% |
| Oracle Corp | ORCL | 1.65% |
| Intl Business Machines Corp | IBM | 1.48% |
| Sandisk Corp | SNDK | 1.48% |
| Arista Networks Inc | ANET | 1.33% |
| Amphenol Corp Cl A | APH | 1.31% |
FAQ
How much do SOXX and XLK overlap?
SOXX and XLK have 36.4% overlap by weight, sharing 18 equity positions (out of 30 in SOXX and 73 in XLK). The official holdings files used are dated 2026-06-30 for SOXX and 2026-08-25 for XLK.
What does 36.4% overlap mean?
SOXX and XLK share a material portion of their portfolio weight in the same underlying stocks. OverlapCheck labels this "moderate holdings overlap" using house ranges of 70% or more, 30% to under 70%, and under 30%. These descriptive ranges are not industry standards or investment guidance. Holdings overlap does not measure correlation, volatility, geographic or factor exposure, fees, or suitability.
Which stocks do SOXX and XLK both hold?
The largest shared positions are NVIDIA Corp., Broadcom, Inc., Advanced Micro Devices, Inc., Micron Technology, Inc., Intel Corp.. The top shared holdings with weights in each fund are shown on this page.
What holdings are different between SOXX and XLK?
SOXX has 12 positions not found in XLK, while XLK has 55 positions not found in SOXX. The largest fund-only positions and their weights are shown on this page.