Something big is about to happen to millions of Australian investment portfolios.
Space Exploration Technologies Corp (NASDAQ: SPCX) is expected to be included in the Nasdaq-100 index this week, less than a month after its 12 June listing.
The inclusion is driven by the Nasdaq-100's fast-track rules for extraordinarily large listings. This allows a company to be added to the index far more quickly than the standard schedule if its market cap is large enough to justify it.
SpaceX, now trading at US$160 per share at a valuation exceeding US$2 trillion, clearly meets that threshold.
For Australian investors, the implications are more direct than many realise.
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What Nasdaq-100 inclusion actually means
The Nasdaq-100 is not just a list of large technology companies. Instead, it is the benchmark that underpins hundreds of billions of dollars in index-tracking funds and ETFs around the world.
When SpaceX joins that index, every fund that tracks the Nasdaq-100 must buy SpaceX shares, mechanically and at scale, regardless of what any portfolio manager thinks of the company's valuation.
Estimates suggest between US$22 billion and US$27 billion in mechanical index buying will be required across QQQ and Russell 1000 trackers once the inclusion becomes effective.
What inclusion means for NDQ holders
The most direct impact for Australian retail investors is felt through the Betashares Nasdaq 100 ETF (ASX: NDQ). NDQ is one of the most widely held ETFs in Australia.
Anyone who owns NDQ, or other ASX-listed US-focused ETFs including the Vanguard MSCI Index International Shares ETF (ASX: VGS) and the iShares S&P 500 ETF (ASX: IVV), will own SpaceX shares once the inclusion is effective.
That happens automatically, without the investor needing to do anything.
For investors who want Nasdaq-100 exposure and are comfortable with SpaceX as a holding, NDQ remains the simplest and most liquid way to access that index from the ASX.
For investors who are concerned about SpaceX's valuation or its GAAP losses, it is worth noting that the inclusion means they will own SpaceX whether they want to or not.
What inclusion means for RCKT holders
For the Betashares Space Industry ETF (ASX: RCKT), index inclusion has come even faster.
SpaceX has already been included in RCKT following the fund's fast-track inclusion feature. This allowed SpaceX to enter the Solactive Space Industry Index far more quickly than standard timelines would normally permit.
SpaceX now represents 25.9% of the RCKT portfolio, making it the fund's single largest holding by a wide margin.
That means RCKT holders already own a meaningful and direct slice of SpaceX, alongside the fund's 28 other holdings across the global space economy. Rocket Lab and AST SpaceMobile remain as the next two largest positions.
For investors who want concentrated and thematic exposure to the space economy, RCKT now offers something NDQ cannot: a dedicated space fund with SpaceX as its dominant holding.
The trade-off remains that RCKT is a smaller, less liquid fund with a higher management fee of 0.57% per annum compared to NDQ's 0.22%.
What inclusion means for superannuation investors
Beyond direct ETF holdings, the Nasdaq-100 inclusion has implications for the millions of Australians whose superannuation funds allocate to international shares.
The vast majority of Australian super funds allocate a large portion of their international shares exposure to US equities. Those allocations typically include the largest companies in the US market.
Once SpaceX is in the Nasdaq-100, it becomes a holding in most institutional portfolios that benchmark against that index.
For most superannuation members, that exposure will be small relative to the overall portfolio. But it will exist, automatically, without any action required.
The risk worth understanding
SpaceX is not a conventionally profitable company.
The company posted a GAAP net loss of US$4.94 billion in 2025. This was driven by losses in the xAI and Space divisions that offset the Starlink connectivity business's profitability.
A company trading at US$2 trillion with significant GAAP losses is a demanding proposition even for investors who are excited about the long-term Starlink and space economy opportunity.
Nasdaq-100 inclusion forces index-tracking funds to own it regardless.
Foolish takeaway
SpaceX joins the Nasdaq-100 this week. Millions of Australian investors will automatically own a piece of the world's most valuable space company through their ETFs and super funds.
For both RCKT and NDQ holders, exposure arrives without any further action required.
Whether SpaceX at US$2 trillion is a good investment is a separate question.
