SMH vs SOXX: Best Semiconductor ETF to Buy in 2026 (Complete Comparison)
SMH vs SOXX: Which Semiconductor ETF Should You Buy in 2026?
If you want to invest in the AI chip boom without picking individual stocks, two semiconductor ETFs dominate the conversation: SMH (VanEck Semiconductor ETF) and SOXX (iShares Semiconductor ETF).
Both give you exposure to NVIDIA, Broadcom, AMD, and the entire chip ecosystem — but they're built differently, and that difference matters for your returns.
The quick answer: SMH has outperformed over most multi-year periods thanks to its NVIDIA and TSMC concentration. But SOXX is up 46.5% YTD in 2026 vs 33.8% for SMH, signaling a potential shift as the AI trade broadens beyond mega-caps.
Here's the full breakdown so you can pick the right one.
Side-by-Side Comparison
| Feature | SMH | SOXX |
|---|---|---|
| Full Name | VanEck Semiconductor ETF | iShares Semiconductor ETF |
| Expense Ratio | 0.35% | 0.35% |
| Number of Holdings | 25 | 30 |
| Index Tracked | MVIS US Listed Semiconductor 25 | ICE Semiconductor Index |
| Weighting Method | Market-cap weighted | Modified market-cap (capped) |
| Assets Under Management | ~$22 billion | ~$12 billion |
| Top Holding Weight | NVIDIA ~19% | NVIDIA ~9% |
| TSMC Exposure | Yes (~10%) | No (US-listed only) |
| ASML Exposure | Yes (US ADR) | Limited |
| 2026 YTD Return | +33.8% | +46.5% |
| 5-Year Annualized Return | ~28% | ~25% |
| Dividend Yield | ~0.5% | ~0.6% |
The Key Difference: Concentration vs Diversification
SMH: Concentrated on Winners
SMH tracks the 25 largest US-listed semiconductor companies using market-cap weighting. This means the biggest companies get the biggest allocations:
- NVIDIA: ~19% of the fund
- Taiwan Semiconductor (TSM): ~10%
- Broadcom: ~6.7%
- Top 3 holdings: ~36% of the entire fund
This concentration is a double-edged sword. When mega-cap chip stocks lead (as they did from 2023-2025), SMH outperforms. When the rally broadens to mid-caps, SMH lags.
SMH's unique advantage is international exposure — it holds TSMC and ASML through their US-listed ADRs. These are two of the most important semiconductor companies in the world that SOXX doesn't hold (or holds minimally).
SOXX: Broader and More Balanced
SOXX tracks the ICE Semiconductor Index with 30 holdings and a modified market-cap weighting that caps individual position sizes. This prevents any single stock from dominating:
- NVIDIA: ~9% (roughly half of SMH's weight)
- No single holding exceeds ~10%
- More exposure to mid-cap semiconductor names
SOXX's rebalancing mechanism automatically trims winners and adds to laggards, creating a built-in buy-low, sell-high discipline. In years when mid-cap chip stocks outperform mega-caps, SOXX has the edge.
Performance: Who's Winning?
Long-Term (2021-2025): SMH Wins
Over most 3-5 year periods, SMH has modestly outperformed SOXX. The reason is simple: NVIDIA's dominance. With NVIDIA at ~19% of SMH vs ~9% of SOXX, SMH captured more of NVIDIA's explosive growth.
2026 YTD: SOXX Wins Big
In 2026, SOXX is up 46.5% vs 33.8% for SMH — a significant reversal. This reflects the broadening of the AI trade:
- Memory stocks like Micron surged 80%+
- Networking chips (Marvell) gained 40%+
- Equipment makers (Lam Research, KLA) rallied on fab expansion
- NVIDIA, while still growing, returned less than the median semiconductor stock
When leadership spreads beyond the top 2-3 names, SOXX's more balanced weighting captures more of that breadth.
What This Tells You
If you believe NVIDIA will continue to dominate and mega-cap chip stocks will lead, SMH is the better choice. If you think the AI trade is broadening across the semiconductor value chain, SOXX gives you better diversified exposure.
Top 10 Holdings Comparison
SMH Top 10
| Rank | Company | Weight | Why It Matters |
|---|---|---|---|
| 1 | NVIDIA (NVDA) | ~19% | AI GPU monopoly |
| 2 | Taiwan Semi (TSM) | ~10% | Global chip foundry |
| 3 | Broadcom (AVGO) | ~6.7% | Custom AI chips + networking |
| 4 | AMD (AMD) | ~5% | NVIDIA alternative |
| 5 | Texas Instruments (TXN) | ~4.5% | Analog chips |
| 6 | Qualcomm (QCOM) | ~4% | Mobile + edge AI |
| 7 | ASML (ASML) | ~4% | EUV lithography monopoly |
| 8 | Applied Materials (AMAT) | ~3.5% | Chip equipment |
| 9 | Micron (MU) | ~3% | AI memory (HBM) |
| 10 | Lam Research (LRCX) | ~3% | Chip equipment |
SOXX Top 10
| Rank | Company | Weight | Why It Matters |
|---|---|---|---|
| 1 | NVIDIA (NVDA) | ~9% | AI GPU monopoly |
| 2 | Broadcom (AVGO) | ~8% | Custom AI chips + networking |
| 3 | AMD (AMD) | ~7% | NVIDIA alternative |
| 4 | Qualcomm (QCOM) | ~5% | Mobile + edge AI |
| 5 | Texas Instruments (TXN) | ~5% | Analog chips |
| 6 | Micron (MU) | ~5% | AI memory (HBM) |
| 7 | Applied Materials (AMAT) | ~4.5% | Chip equipment |
| 8 | Lam Research (LRCX) | ~4% | Chip equipment |
| 9 | KLA Corp (KLAC) | ~4% | Chip equipment |
| 10 | Marvell (MRVL) | ~4% | Custom silicon |
Key takeaway: SMH is a bet on NVIDIA + TSMC. SOXX is a bet on the entire semiconductor ecosystem.
What About SOXL? (3x Leveraged)
SOXL (Direxion Daily Semiconductor Bull 3x) provides 3x daily leveraged exposure to the semiconductor sector. It's extremely popular with traders but dangerous for long-term investors.
Why SOXL Is Risky
- Volatility decay: Daily rebalancing erodes returns over time, especially in choppy markets
- Amplified losses: A 33% drop in semiconductors would wipe out nearly 100% of SOXL's value
- Not designed for buy-and-hold: SOXL is a trading tool, not an investment vehicle
In a straight-up bull market, SOXL can deliver spectacular returns. But a single correction can destroy years of gains. The January 2026 DeepSeek crash sent semiconductor stocks down 15-20% in days — SOXL would have dropped 45-60%.
Our recommendation: Avoid SOXL unless you're an experienced trader with strict stop-losses. For long-term investors, unleveraged SMH or SOXX is the right choice.
Which ETF Should You Buy?
Choose SMH If:
- You want maximum NVIDIA exposure (~19% vs ~9%)
- You value TSMC and ASML exposure (international foundry + equipment)
- You believe mega-cap chip stocks will continue to lead
- You're comfortable with higher concentration risk
- Your time horizon is 5+ years (SMH's long-term track record is strong)
Choose SOXX If:
- You want broader diversification across 30 semiconductor names
- You think the AI trade is broadening beyond NVIDIA
- You prefer more balanced position sizing (no single stock >10%)
- You want more exposure to mid-cap semiconductor names
- You're investing in a taxable account (SOXX's rebalancing is more tax-efficient)
Our Recommendation
For most long-term investors, SMH is the better default choice due to its TSMC and ASML exposure — two irreplaceable companies that SOXX largely misses. TSMC manufactures the world's most advanced chips, and ASML has a literal monopoly on the equipment needed to make them.
However, if you already own individual NVIDIA shares, SOXX provides better complementary diversification without doubling down on your existing NVIDIA position.
How to Add Semiconductor ETFs to Your Portfolio
Suggested Allocation by Risk Tolerance
| Investor Type | Core Portfolio | Semiconductor Allocation | ETF Choice |
|---|---|---|---|
| Conservative | 90% VOO/VTI | 10% semiconductor ETF | SMH |
| Moderate | 80% VOO/VTI | 15% semiconductor ETF | SMH or SOXX |
| Aggressive | 70% VOO/VTI | 20% semiconductor ETF | SMH + individual stocks |
| FIRE Investor | 85% VTI/VXUS | 10-15% semiconductor ETF | SOXX (broader) |
Related: VOO vs VTI vs SCHD: Which ETF Is Best? | Best Semiconductor Stocks to Buy in 2026
Frequently Asked Questions
Is SMH or SOXX better for 2026?
Both are excellent semiconductor ETFs. SMH has outperformed over 5-year periods due to NVIDIA concentration and TSMC/ASML exposure. However, SOXX is outperforming in 2026 (46.5% vs 33.8% YTD) as the AI trade broadens to mid-cap chip stocks. If you believe NVIDIA will continue leading, choose SMH. If you think the rally is broadening, choose SOXX.
What is the expense ratio for SMH and SOXX?
Both SMH and SOXX charge an expense ratio of 0.35%, meaning you pay $3.50 per year for every $1,000 invested. This is reasonable for sector-specific ETFs, though higher than broad market index funds like VOO (0.03%).
Should I buy SOXL instead of SMH or SOXX?
No, for long-term investors. SOXL provides 3x daily leveraged exposure and suffers from volatility decay over time. A 33% semiconductor correction would nearly wipe out SOXL. It's designed as a short-term trading tool, not a buy-and-hold investment. Stick with unleveraged SMH or SOXX.
How much of my portfolio should be in semiconductor ETFs?
Most financial advisors recommend limiting sector-specific ETF exposure to 10-20% of your total portfolio. A core position in a broad market index fund (VOO or VTI) should make up 70-85% of your portfolio, with semiconductor ETFs as a satellite allocation for additional AI/tech exposure.
Does SMH hold international stocks?
Yes, SMH holds US-listed ADRs of international semiconductor companies, most notably Taiwan Semiconductor (TSM, ~10% weight) and ASML (ASML, ~4% weight). This gives SMH broader global semiconductor exposure compared to SOXX, which primarily holds US-domiciled companies.
Disclaimer: This article is for educational purposes only and does not constitute financial advice. ETF performance data is based on publicly available information as of May 2026. Past performance does not guarantee future results.