Data as of Sep 4, 2026. Both funds on the fields they both publish, from the same sources.
SOXX vs VOO
iShares Semiconductor ETF and Vanguard 500 Index Fund.
What they hold in common
By the books each fund has filed, SOXX and VOO hold 18% of their money in the same securities at the same weight.
| Holding | SOXX | VOO |
|---|---|---|
| NVIDIA Corp. | 6.82% | 7.53% |
| Broadcom, Inc. | 6.08% | 2.78% |
| Micron Technology, Inc. | 8.55% | 2.02% |
| Advanced Micro Devices, Inc. | 8.10% | 1.47% |
| Intel Corp. | 6.34% | 1.03% |
| Applied Materials, Inc. | 5.78% | 0.89% |
| Lam Research Corp. | 4.90% | 0.84% |
| KLA Corp. | 5.65% | 0.61% |
| Texas Instruments, Inc. | 3.51% | 0.42% |
| Marvell Technology, Inc. | 5.23% | 0.41% |
| QUALCOMM, Inc. | 2.65% | 0.30% |
| Analog Devices, Inc. | 3.45% | 0.30% |
| Only in SOXX | Only in VOO |
|---|---|
| Taiwan Semiconductor Manufacturing Co. L 4.27% | Apple Inc 6.61% |
| NXP Semiconductors NV 3.15% | Microsoft Corp 4.31% |
| Astera Labs, Inc. 3.02% | Amazon.com Inc 3.63% |
| ASML Holding NV 2.31% | Alphabet Inc 3.26% |
| Credo Technology Group Holding Ltd. 2.01% | Alphabet Inc 2.60% |
| Entegris, Inc. 1.22% | Meta Platforms Inc 1.92% |
| ASE Technology Holding Co. Ltd. 1.22% | Tesla Inc 1.84% |
| MACOM Technology Solutions Holdings, Inc 1.18% | Eli Lilly & Co 1.48% |
Weight overlap is an ETFIQ calculation: for every security both funds hold, the smaller of the two weights, summed. Above 50%, holding both is close to holding one of them twice. Holdings as filed for Jun 30, 2026.
| SOXX iShares Semiconductor ETF | VOO Vanguard 500 Index Fund | |
|---|---|---|
| Where it sits | Themes desk | Core fund |
| Issuer | iShares | Vanguard |
| What it is | Semiconductors | S&P 500 |
| Total return, 1 year | +113.9% | +20.1% |
| S&P 500 over the same days | +20.0% | +20.0% |
| Gap to the S&P 500 | +93.9 pts | +0.1 pts |
| Expense ratio | not published | 0.03% |
| Already in the S&P 500 | 80.8% | 100.0% |
| Holdings | 30 | 506 |
SOXX in plain words
By weight, 81% of SOXX's portfolio is stocks that are also in the S&P 500; its active share against the S&P 500 is 82%. The top ten holdings are 62% of the fund across 30 positions, as filed for Jun 30, 2026. Over the year to Sep 4, 2026 the fund returned +113.9% with distributions reinvested against +20.0% for the S&P 500, so a holder was ahead by 93.9 pts. It sits 20.6% below its all-time high of Jun 22, 2026.
VOO in plain words
VOO is a index equity fund tracking S&P 500. Over the year to Sep 4, 2026 it returned +20.1% with distributions reinvested, against +20.0% for the S&P 500 and +25.6% for the Nasdaq-100. The prospectus expense ratio is 0.03% a year. By its holdings filed for Jun 30, 2026, 100% of the fund by weight is stocks the S&P 500 also holds, across 506 positions, with the top ten at 36.5%.
Questions people ask
- Which returned more over the last year, SOXX or VOO?
- In the year to Sep 4, 2026, with distributions reinvested, SOXX returned +113.9% and VOO returned +20.1%, so SOXX returned more. One year is one year; the longer windows are in the table.
- How much do SOXX and VOO overlap with the S&P 500?
- By their latest filed holdings, 81% of SOXX and 100% of VOO by weight is stocks the S&P 500 already holds. Between the two funds, 18% of their books are the same securities at the same weight.
- Are SOXX and VOO the same kind of fund?
- No. SOXX is a thematic ETF and VOO is an index ETF, so they are built for different jobs. The table compares what both publish: return, cost and what each actually holds.
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Where these figures came from
ETFIQ links to the documents behind every figure. It is not affiliated with any issuer, and a link is not an endorsement.
Cite this page. ETFIQ, SOXX against VOO, data as of Sep 4, 2026. https://etfiq.com/compare/any/SOXX-VOO.html Free to use with attribution; the underlying files are at Open data.
A comparison is not a recommendation. Standards and sources