SMH vs SOXX overlap - what they share and where they differ
SMH and SOXX share 73.9% of their weight across 23 common positions, read from what each fund reported to the SEC.
Each week Ploutos reads the reported positions of the largest US equity ETFs and measures, pair by pair, the weight they share: for every stock both funds hold, the smaller of the two weights counts. Two funds tracking the same index land near 100%. A sector fund inside a broad index fund lands at roughly that sector's weight.
SMH and SOXX
73.9%
23 shared positions
SMH
VanEck Semiconductor ETF
Reported positions cover 100% of the fund, 25 positions · Jun 30, 2026
Top 10: 70.2%·Holdings of SMH
SOXX
iShares Semiconductor ETF
Reported positions cover 100% of the fund, 30 positions · Jun 30, 2026
Top 10: 61.6%·Holdings of SOXX
Reported positions cover SMH 100%, SOXX 100% of each fund. An overlap cannot exceed the smaller coverage, so a low figure can mean little overlap or thin reporting.
SOXX vs SMH side by side
SMHVanEck Semiconductor ETF
25
stock positions reported to the SEC
3.9% of its weight is in 2 names SOXX does not hold
SOXXiShares Semiconductor ETF
30
stock positions reported to the SEC
8.1% of its weight is in 7 names SMH does not hold
Where each fund's weight sits
Largest sectors for both funds
The widest gap is Technology: SMH has 3.5 points more of it.
The figures side by side
| SMH | SOXX | |
|---|---|---|
| Filing date | Jun 30, 2026 | Jun 30, 2026 |
| Stock positions reported | 25 | 30 |
| Weight of the ten largest | 70.2% | 61.6% |
| Largest position | NVDA 17.6% | MU 8.5% |
| Held alone | 2 positions, 3.9% | 7 positions, 8.1% |
| Covered by stock positions | 100% | 100% |
Holdings they share
| Stock | In SMH | In SOXX | Counted |
|---|---|---|---|
| NVDANVIDIA Corp | 17.55% | 6.81% | 6.81% |
| AMATApplied Materials Inc | 5.74% | 5.77% | 5.74% |
| MUMicron Technology Inc | 5.67% | 8.54% | 5.67% |
| AMDAdvanced Micro Devices Inc | 5.63% | 8.09% | 5.63% |
| KLACKLA Corp | 5.57% | 5.64% | 5.57% |
| AVGOBroadcom Inc | 5.28% | 6.08% | 5.28% |
| INTCIntel Corp | 5.15% | 6.33% | 5.15% |
| LRCXLam Research Corp | 5.31% | 4.89% | 4.89% |
| MRVLMarvell Technology Inc | 4.66% | 5.22% | 4.66% |
| TSMTaiwan Semiconductor Manufacturing Co Ltd | 9.29% | 4.26% | 4.26% |
What each holds alone
The heaviest positions one fund reports and the other does not.
Only in SMH
Only in SOXX
Questions people ask
Is SMH the same as SOXX?
73.9% of their weight sits in the same 23 holdings. SMH also reports CDNS, SNPS, which the other does not. SOXX also reports CRDO, ASX, ENTG, which the other does not.
How is the overlap between SMH and SOXX measured?
For every stock both funds report, the smaller of the two weights counts, and the sum is the overlap. The reported positions cover 100% of SMH and 100% of SOXX, so the number cannot exceed the smaller coverage.
Which holds more, SOXX or SMH?
SMH reports 25 stock positions and SOXX reports 30. 3.9% of SMH's weight sits in names SOXX does not hold, and 8.1% of SOXX's weight in names SMH does not hold. The ten largest positions are 70.2% of SMH and 61.6% of SOXX.
How do SMH and SOXX differ by sector?
The widest gap is Technology: SMH has 3.5 points more of it. Sectors come from each holding's SIC code in its SEC record, summed by the weight the fund reports.
Where do the numbers come from?
From each fund's own N-PORT filing to the SEC, which lists every position and its weight. The comparison uses every equity position the fund reports; cash, futures and bonds are not counted, which is why a coverage figure sits next to every result. Holdings change between filings.
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Descriptive data from public SEC filings. Nothing on this page is a recommendation to buy, sell or hold any fund or stock, and holdings change between filings.