SOXQ vs VB: how much do they really overlap?
SOXQ (Invesco PHLX Semiconductor ETF, tracking the PHLX Semiconductor) and VB (Vanguard Small-Cap ETF, tracking the CRSP US Small Cap) overlap by roughly 11% by weight. 0 of SOXQ's top 10 holdings also appear in VB. A 50/50 blend of the two behaves like about 75 equally-weighted bets (diversification grade A). In short, the two funds have only a small shared core — they mostly hold different things and are largely complementary.
The same companies, in both funds
These 4 holdings appear in both SOXQ and VB. The weight columns show how much of each fund each name represents.
| Holding | in SOXQ | in VB |
|---|---|---|
| ALAB Astera Labs, Inc. | 2.81% | 0.62% |
| CRDO Credo Technology Group Holding Ltd | 1.63% | 0.48% |
| COHR Coherent Corp. | 2.75% | 0.42% |
| MTSI MACOM Technology Solutions Holdings, Inc. | 1.02% | 0.31% |
Only in SOXQ
Invesco PHLX Semiconductor ETF — semiconductors. Its biggest holdings that VB doesn’t have:
| NVDA NVIDIA Corporation | 10.47% |
| MU Micron Technology, Inc. | 8.91% |
| AVGO Broadcom Inc. | 7.87% |
| AMAT Applied Materials, Inc. | 5.83% |
| KLAC KLA Corporation | 5.47% |
| MRVL Marvell Technology, Inc. | 5.12% |
| LRCX Lam Research Corporation | 4.88% |
| ASML ASML Holding N.V. | 4.41% |
Only in VB
Vanguard Small-Cap ETF — US small-cap. Its biggest holdings that SOXQ doesn’t have:
| FLEX Flex Ltd. | 0.69% |
| CIEN Ciena Corp. | 0.51% |
| RKLB Rocket Lab Corp. | 0.50% |
| BE Bloom Energy Corp. Class A | 0.47% |
| EME EMCOR Group Inc. | 0.46% |
| JBL Jabil Inc. | 0.45% |
| FIX Comfort Systems USA Inc. | 0.40% |
| RVMD Revolution Medicines Inc. | 0.39% |
So — mostly different. Should you hold both?
SOXQ and VB have only a small shared core — they mostly hold different things and are largely complementary. Held together they genuinely broaden your exposure — a 50/50 blend reaches ~75 effective positions (grade A), because they hold largely different securities.
Holdings as of — SOXQ: Jun 29, 2026 (Invesco); VB: May 31, 2026 (Vanguard). Refreshed monthly. Overlap is measured across each fund’s largest holdings (top 50); the diffuse long tail barely moves the math.
See this for YOUR whole portfolio, free →SOXQ vs VB — FAQ
- How much do SOXQ and VB overlap?
- SOXQ and VB overlap by approximately 11% measured by portfolio weight — that is the share of the smaller fund's holdings (by weight) that also sit inside the other. 0 of SOXQ's 10 largest holdings are also held by VB. They share 4 of their listed top holdings in total.
- Is it redundant to hold both SOXQ and VB?
- Because they have only a small shared core — they mostly hold different things and are largely complementary, holding both is not redundant — each fund covers largely different holdings, so together they broaden your exposure. A 50/50 blend has an effective 75 positions and a A diversification grade.
- What does VB hold that SOXQ doesn't?
- VB's largest holdings that SOXQ doesn't hold include FLEX, CIEN, RKLB, BE, EME. Its category is US small-cap, versus SOXQ's semiconductors.
- Which is more concentrated, SOXQ or VB?
- SOXQ's top 10 holdings are 63% of its listed weight; VB's are 29%. The more concentrated fund leans harder on its largest names.