SOXX vs VOO: Holdings Overlap
iShares · 30 holdings · $47.6B · as of 2026-03-31
Vanguard · 504 holdings · $1.03T · as of 2026-03-31
How similar are SOXX and VOO?
iShares Semiconductor ETF (SOXX, by iShares) holds 30 positions; Vanguard 500 Index Fund (VOO, by Vanguard) holds 504. They have 17 holdings in common, and by portfolio weight the two funds are 14.4% identical. In practical terms the pair is lightly overlapping, with most of each portfolio distinct.
- Overlap by Weight
- 14.4%Sum of the smaller weight of each shared holding
- Shared Holdings
- 17SOXX holds 30 · VOO holds 504
- Weight in Shared Holdings
- SOXX 77%·VOO 14%Share of each fund's weight in stocks both funds own
Based on each fund's latest official holdings. How is this calculated?
What makes each fund different
Only in SOXX
13 of 30 positions (22.6% of the fund) are not held by VOO.
Sector Breakdown
| Sector | SOXX | VOO |
|---|---|---|
| Information Technology | 98.6% | 32.7% |
| Financials | 0.0% | 12.4% |
| Communication Services | 0.0% | 10.5% |
| Consumer Discretionary | 0.0% | 9.9% |
| Health Care | 0.0% | 9.5% |
| Other Sectors | 0.0% | 24.9% |
| Unclassified | 1.2% | 0.0% |
Share of each fund's portfolio weight by GICS-style sector, compiled from issuer fund data and our own classification of the holdings, not the issuers' published sector charts. “Unclassified” is weight we could not classify (1% of SOXX, 0% of VOO).
Performance
| Fund | 1M | YTD | 1Y | 3Y (ann.) | 5Y (ann.) | 10Y (ann.) | Yield |
|---|---|---|---|---|---|---|---|
| SOXX | -1.5% | +80.6% | +126.6% | +47.5% | +29.5% | +32.9% | 0.27% |
| VOO | +3.4% | +14.0% | +23.7% | +21.3% | +13.4% | +15.4% | 1.03% |
Total returns including dividends, from adjusted daily closes as of 2026-08-07. 3Y/5Y/10Y are annualized. Yield is trailing-12-month distributions over the last close. Past performance does not predict future results.
Project the growth of $10,000 in SOXX vs VOO →
Shared Holdings(17)
The top 10 shared positions account for 96% of the overlap, led by NVDA, AVGO and MU.
 NVDANVIDIA Corp. COM | 8.40% | 7.58% | 7.58% |
|---|---|---|---|
 AVGOBroadcom Inc COM | 8.27% | 2.62% | 2.62% |
 MUMicron Technology Inc. COM | 6.99% | 0.68% | 0.68% |
 AMDAdvanced Micro Devices Inc. COM | 6.47% | 0.59% | 0.59% |
 AMATApplied Materials Inc. COM | 5.84% | 0.48% | 0.48% |
 LRCXLam Research Corporation COM NEW | 3.90% | 0.48% | 0.48% |
 INTCIntel Corporation COM | 4.13% | 0.37% | 0.37% |
 KLACKLA Corp. COM NEW | 4.12% | 0.35% | 0.35% |
 TXNTexas Instruments Inc. COM | 3.91% | 0.32% | 0.32% |
 ADIAnalog Devices Inc. COM | 3.82% | 0.28% | 0.28% |
 QCOMQUALCOMM Inc. COM | 3.86% | 0.25% | 0.25% |
 MPWRMonolithic Power Systems Inc. COM | 4.08% | 0.10% | 0.10% |
 NXPINXP Semiconductors NV EUR0.20 | 3.70% | 0.09% | 0.09% |
 TERTeradyne Inc. COM | 3.95% | 0.08% | 0.08% |
 MCHPMicrochip Technology Incorporated COM | 3.02% | 0.06% | 0.06% |
 ONON Semiconductor Corp. COM | 2.14% | 0.04% | 0.04% |
 SWKSSkyworks Solutions, Inc. COM | 0.71% | 0.01% | 0.01% |
Frequently Asked Questions
How much do SOXX and VOO overlap?
SOXX and VOO overlap by 14.4% of portfolio weight. They share 17 holdings (SOXX holds 30 positions and VOO holds 504), based on each fund's latest SEC-reported holdings.
Is it redundant to own both SOXX and VOO?
The two portfolios are 14.4% identical by weight. Owning both is not redundant. Most of each portfolio is distinct, so the funds can serve different roles.
What are the biggest shared holdings of SOXX and VOO?
The largest positions held by both funds are NVDA, AVGO, MU, AMD and AMAT. Together the top 10 shared positions account for 96% of the total overlap.
What does SOXX own that VOO doesn't?
13 positions (22.6% of SOXX) are unique to SOXX, led by MRVL, ASML and TSM. In the other direction, 487 positions (85.4% of VOO) are unique to VOO.