SOXX vs SPEM: Holdings Overlap
iShares · 30 holdings · $47.6B · as of 2026-03-31
SPEMState Street® SPDR® Portfolio Emerging Markets ETF
State Street (SPDR) · 2776 holdings · $17.4B · as of 2026-08-06
Holdings snapshots are 128 days apart (SOXX: 2026-03-31, SPEM: 2026-08-06). Weights and index membership change between snapshots, so the true current overlap is typically higher than shown. For funds tracking the same index, the gap can be 5–15 points.
How similar are SOXX and SPEM?
iShares Semiconductor ETF (SOXX, by iShares) holds 30 positions; State Street® SPDR® Portfolio Emerging Markets ETF (SPEM, by State Street (SPDR)) holds 2776. They have 1 holdings in common, and by portfolio weight the two funds are 0.5% identical. In practical terms the pair is essentially distinct, holding almost none of the same securities.
- Overlap by Weight
- 0.5%Sum of the smaller weight of each shared holding
- Shared Holdings
- 1SOXX holds 30 · SPEM holds 2776
- Weight in Shared Holdings
- SOXX 1%·SPEM 0%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
29 of 30 positions (99.3% of the fund) are not held by SPEM.
Only in SPEM
2775 of 2776 positions (108.5% of the fund) are not held by SOXX. Showing the top 30 by weight.
Sector Breakdown
| Sector | SOXX | SPEM |
|---|---|---|
| Information Technology | 98.6% | 25.3% |
| Financials | 0.0% | 15.1% |
| Consumer Discretionary | 0.0% | 7.0% |
| Communication Services | 0.0% | 5.4% |
| Materials | 0.0% | 3.8% |
| Other Sectors | 0.0% | 8.7% |
| Unclassified | 1.2% | 43.5% |
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, 40% of SPEM).
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% |
| SPEM | +2.8% | +13.1% | +22.8% | +17.3% | +7.2% | +8.6% | 2.48% |
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 SPEM →
Shared Holdings(1)
 UMCUnited Microelectronics Corp. | 0.57% | 0.47% | 0.47% |
|---|
Frequently Asked Questions
How much do SOXX and SPEM overlap?
SOXX and SPEM overlap by 0.5% of portfolio weight. They share 1 holdings (SOXX holds 30 positions and SPEM holds 2776), based on each fund's latest SEC-reported holdings.
Is it redundant to own both SOXX and SPEM?
The two portfolios are 0.5% identical by weight. Owning both is genuine diversification: the funds hold almost none of the same securities.
What are the biggest shared holdings of SOXX and SPEM?
The largest positions held by both funds are UMC. Together the top 1 shared positions account for 99% of the total overlap.
What does SOXX own that SPEM doesn't?
29 positions (99.3% of SOXX) are unique to SOXX, led by NVDA, AVGO and MU. In the other direction, 2775 positions (108.5% of SPEM) are unique to SPEM.