Does SOXX Diversify an Account Holding Micron and Nvidia?

Key findings

• Using the article’s August 2026 SOXX weights, a 20% account allocation adds 1.398 percentage points of Micron ownership and 1.680 points of Nvidia ownership.
• The added Micron sleeve contributes a separate 0.246% Nvidia customer-revenue exposure indicator using the displayed Altsets relationship.
• An ETF allocation should be evaluated against the positions it replaces; funding it from cash or from existing memory holdings produces different concentration changes.

Adding a semiconductor ETF can widen an account's holdings while increasing positions it already owns. Using this article's August 2026 SOXX snapshot, a 20% account allocation adds 1.398 percentage points of Micron and 1.680 percentage points of Nvidia through the fund.

For an investor who already holds both stocks, that is the first calculation to make. The second is commercial overlap: the new Micron sleeve also sells to Nvidia in the Altsets graph. Ownership and customer dependence should remain separate columns.

What a 20% fund allocation adds

These are the source fund weights already used in this article, rather than current holdings. The calculation multiplies the assumed account allocation by each fund weight. A live decision needs the fund's holdings on the intended purchase date.

Micron's Altsets Nvidia customer share is 17.62%. Multiplying that by the 1.398% added Micron weight gives a 0.246% portfolio-weighted customer-revenue exposure indicator. It is not another Nvidia security position. Adding it to the 1.680% direct look-through ownership and calling the sum “Nvidia weight” would combine incompatible measures.

Where the allocation comes from changes the result

An investor funding SOXX from cash adds the two ownership positions shown above. An investor reducing individual Micron and Nvidia holdings to fund SOXX can reduce those direct concentrations despite retaining them inside the ETF.

For example, replacing 2 percentage points of direct Micron with this 20% SOXX allocation leaves Micron ownership 0.602 percentage points lower, before any other account changes. Replacing 2 points of direct Nvidia leaves Nvidia ownership 0.320 points lower. The other 16 points of funding in that illustration are unspecified.

This is why “the ETF diversifies me” is an incomplete statement. The relevant comparison is the account before and after the funding trades, followed by the customer and supplier routes inherited through the fund.

Widen the graph only after resolving the ownership arithmetic

The fund can contain internal commercial links between constituents and outside suppliers shared by them. Those are useful additions to the holdings table, but neither network breadth nor a large security count establishes independent sources of earnings.

Use the account's combined direct and fund look-through weights when calculating commercial indicators. Otherwise Micron held individually and Micron held through SOXX become two apparent companies, and the same business exposure gets mishandled.

The account before and after the funding trades is the relevant basis for evaluating diversification. A broad fund may help a concentrated account substantially, while a sector fund can reinforce a theme through securities the investor already owns. The calculations reveal which case is being proposed without needing a universal ETF safety score.

For commercial overlap after holdings are resolved, see shared-customer screening. The Altsets methodology explains relationship weights.

Sources

• Altsets supply chain dataset
• HPE and Microsoft alliance
• Micron HBM4 for Nvidia Vera Rubin
• SK Hynix and Nvidia multi-year technology partnership

Related research

• Portfolio Supply Chain Concentration: Internal Links vs. Outside Overlap

• Do Supply Chain Links Improve Covariance Models?

• Supply Chain Data vs. 13F Holdings: Ownership and Business Exposure

• Build a Portfolio Watchlist of Companies You Do Not Own

Methodology

Read the methodology for this research.

Cite this research

Altsets Research. "Does SOXX Diversify an Account Holding Micron and Nvidia?." Published September 24, 2026. https://www.altsets.com/research/etf-hidden-supply-chain-concentration

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