SOXQ vs SOXX: how much do they really overlap?
SOXQ (Invesco PHLX Semiconductor ETF, tracking the PHLX Semiconductor) and SOXX (iShares Semiconductor ETF, tracking the NYSE Semiconductor) overlap by roughly 85% by weight. 10 of SOXQ's top 10 holdings also appear in SOXX. A 50/50 blend of the two behaves like about 20 equally-weighted bets (diversification grade C). In short, the two funds hold nearly the same stocks in nearly the same proportions — owning both is largely redundant.
The same companies, in both funds
These 23 holdings appear in both SOXQ and SOXX. The weight columns show how much of each fund each name represents.
| Holding | in SOXQ | in SOXX |
|---|---|---|
| NVDA NVIDIA Corporation | 10.47% | 8.42% |
| MU Micron Technology, Inc. | 8.91% | 8.21% |
| AVGO Broadcom Inc. | 7.87% | 7.91% |
| AMAT Applied Materials, Inc. | 5.83% | 5.08% |
| INTC Intel Corporation | 4.34% | 5.24% |
| KLAC KLA Corporation | 5.47% | 4.28% |
| LRCX Lam Research Corporation | 4.88% | 4.27% |
| TSM Taiwan Semiconductor Manufacturing Company Limited | 4.11% | 4.57% |
| MRVL Marvell Technology, Inc. | 5.12% | 4.08% |
| AMD Advanced Micro Devices, Inc. | 3.95% | 8.57% |
| ADI Analog Devices, Inc. | 3.58% | 4.04% |
| TXN Texas Instruments Incorporated | 3.53% | 4.16% |
| QCOM QUALCOMM Incorporated | 2.84% | 2.75% |
| TER Teradyne, Inc. | 2.60% | 3.22% |
| NXPI NXP Semiconductors N.V. | 2.52% | 3.48% |
+ 8 more shared holdings.
Only in SOXQ
Invesco PHLX Semiconductor ETF — semiconductors. Its biggest holdings that SOXX doesn’t have:
| COHR Coherent Corp. | 2.75% |
| GFS GLOBALFOUNDRIES Inc. | 1.60% |
Only in SOXX
iShares Semiconductor ETF — semiconductors. Its biggest holdings that SOXQ doesn’t have:
| ASX ASE TECHNOLOGY HOLDING ADR REPRESE | 1.19% |
| ENTG ENTEGRIS INC | 1.01% |
| UMC UNITED MICRO ELECTRONICS ADR REP | 0.90% |
| NVMI NOVA LTD | 0.71% |
| STM STMICROELECTRONICS ADR NV | 0.71% |
| RMBS RAMBUS INC | 0.55% |
| SWKS SKYWORKS SOLUTIONS INC | 0.53% |
| XTSLA BLK CSH FND TREASURY SL AGENCY | 0.11% |
So — nearly identical. Should you hold both?
SOXQ and SOXX hold nearly the same stocks in nearly the same proportions — owning both is largely redundant. If you already hold SOXQ, adding SOXX mostly increases your bet on the names they share rather than spreading it — a 50/50 blend still behaves like only ~20 equal positions, with the top 10 alone at 61% and the Magnificent Seven at 9%.
Holdings as of — SOXQ: Jun 29, 2026 (Invesco); SOXX: Jul 30, 2026 (iShares (BlackRock)). Refreshed monthly. Overlap is measured across each fund’s largest holdings (top 33); the diffuse long tail barely moves the math.
See this for YOUR whole portfolio, free →SOXQ vs SOXX — FAQ
- How much do SOXQ and SOXX overlap?
- SOXQ and SOXX overlap by approximately 85% measured by portfolio weight — that is the share of the smaller fund's holdings (by weight) that also sit inside the other. 10 of SOXQ's 10 largest holdings are also held by SOXX. They share 23 of their listed top holdings in total.
- Is it redundant to hold both SOXQ and SOXX?
- Because they hold nearly the same stocks in nearly the same proportions — owning both is largely redundant, holding both is largely redundant — you mostly duplicate the same megacaps and concentrate rather than diversify. A 50/50 blend has an effective 20 positions and a C diversification grade.
- What does SOXX hold that SOXQ doesn't?
- SOXX's largest holdings that SOXQ doesn't hold include ASX, ENTG, UMC, NVMI, STM. Its category is semiconductors, versus SOXQ's semiconductors.
- Which is more concentrated, SOXQ or SOXX?
- SOXQ's top 10 holdings are 63% of its listed weight; SOXX's are 61%. The more concentrated fund leans harder on its largest names.