etf overlap tool · light overlap
SOXX vs VUAA overlap
82% of SOXX's money sits in companies VUAA also holds; 18% of the two funds is the same money, spread over 17 companies both hold.
Holdings as of September 30, 2026 · source: iShares (SOXX), Vanguard (VUAA) · How we measured all 1,431 pairs
- same money
- same companies, extra weight
- only in this fund
Hold SOXX and VUAA with other funds or stocks? The free portfolio optimizer opens SOXX and VUAA beside the rest of what you own: the companies you hold twice, what the funds cost a year, and where the next deposit should go. No account.
The companies you would own twice
What only one of them gives you
AMZNAmazon.com Inc3.70%Where each fund puts its money
SOXX and VUAA: what people ask
How much do SOXX and VUAA overlap?
18% by weight, as of September 30, 2026: light overlap. 17 companies appear in both funds; they make up 82% of SOXX and 18% of VUAA.
Which stocks do SOXX and VUAA both hold?
The largest shared positions are NVDA, AVGO, MU, AMD and INTC. Ranked by the smaller of the two weights, which is the part you would own twice.
Is it redundant to hold both SOXX and VUAA?
Out of every $100 split evenly between them, about $18 (half in each fund) buys identical positions. The rest is exposure only one of the two funds gives you: 13 names only in SOXX, 486 only in VUAA. Half in each behaves like 39 equally weighted stocks, against 19 for SOXX alone and 43 for VUAA alone. Whether that duplication is a problem depends on the mix you want; this is a description, not advice.
What is VUAA, next to SOXX?
VUAA is Vanguard S&P 500 UCITS ETF (USD) Accumulating (ISIN IE00BFMXXD54), an Irish-domiciled UCITS fund on the S&P 500 index. Next to SOXX, 18% of the money is the same, spread over 17 companies both hold, as of September 30, 2026.
Does the SOXX vs VUAA overlap apply to other tickers?
Yes. VUAA also trades as VUAG (London, GBP), and VUSA (ISIN IE00B3XXRP09) is its distributing share class. Each is the same portfolio in another currency, on another exchange or paying its dividends out, so SOXX vs VUAG also overlaps 18%.
How is ETF overlap calculated here?
For every company held by both funds we take the smaller of its two weights and add them up. The weights come from the full holdings files iShares and Vanguard publish, not a top-10 sample, and companies are matched by their ISIN so share classes stay apart. Sector overlap applies the same rule to the issuers' sector labels; "behaves like N equally weighted stocks" is one over the sum of the squared weights.
Weights come from each issuer's published holdings file and are matched company by company on their ISIN. Cash, futures and currency positions are left out. This page describes what the funds hold; it is not investment advice.