SpaceX earnings debut underlines the case for diversified AI exposure

SpaceX reported its first quarterly results as a public company on 4 August to a mixed market response.

Having run up in advance of the numbers on the day of the release, the shares fell in extended trading as better-than-expected revenue was overshadowed by heavy spending on artificial intelligence.

The AI trade has spent much of the year being treated like a rocket launch, but the past couple of months have been a reminder that even rockets hit turbulence before they reach orbit.

Semiconductors have been at the centre of that wobble. Demand remains strong, but valuations, crowded positioning and the sheer scale of AI-related capital spending are now being tested more closely. SpaceX has been caught up in that wider choppiness too, which makes this week’s results feel like more than just a first quarterly update.

Where SpaceX has landed in the indices

The index story has moved quickly. SpaceX began trading on the Nasdaq on 12 June and joined the Nasdaq 100 on 7 July after the index changed its rules to allow very large new listings to enter after 15 trading days. Trackers linked to the benchmark have therefore already had to buy the stock.

Its initial Nasdaq 100 weighting was reported at around 1.3%, well below what its headline market value might suggest. The reason is simple: index weight is based on free-float-adjusted market capitalisation, not the total value of the company.

SpaceX has also moved into Russell index products under fast-entry provisions, while MSCI has a similar route for large IPOs in its Global Standard Indexes. Many investors using Nasdaq-100, Russell or MSCI-based funds therefore already have some indirect exposure. But S&P 500 trackers are the notable exception.

S&P Dow Jones Indices has held the line on its rules. A company must have traded publicly for 12 months and be profitable under US Generally Accepted Accounting Principles (GAAP) before it can be eligible for the S&P 500.

That distinction matters. SpaceX is already in several growth and global equity benchmarks, but not the S&P 500. This week’s results will therefore be watched for evidence that the business can turn an exceptional growth narrative into the profitability and cash-flow profile required by more conservative index rules.

What this means for portfolios

If your US equity exposure is sourced through S&P 500 trackers, which is the case for the AJ Bell funds and Passive MPS, you will not yet hold SpaceX through that route. That is not a gap. It is how the index is built, and the rules are there for a reason.

Portfolios using Nasdaq-100, FTSE Russell, MSCI World or MSCI All Country funds may already be picking up SpaceX, although the initial position is limited by the constrained free float. As further shares become tradeable, the weighting could rise, but that will depend on index rules, share availability and the share price.

How AJ Bell portfolios are positioned for AI exposure

Some investors may ask whether a portfolio without SpaceX is missing out on AI. The better question is whether the portfolio already has enough ways to benefit from the theme without becoming over-reliant on the most crowded parts of it.

That has been the lesson of the past couple of months. The long-term AI opportunity has not disappeared, but the launch has not been a straight line. Semiconductors have shown how quickly excitement can turn into a test of valuation and earnings delivery. SpaceX has been part of that same market turbulence.

• Core AI infrastructure: Nvidia, Alphabet, Microsoft, Meta and Amazon remain major holdings in S&P 500 trackers.
• Hardware exposure: in emerging markets Taiwan and South Korea add exposure through companies such as TSMC (Taiwan Semiconductor Manufacturing Company), Samsung and SK Hynix, but this brings semiconductor-cycle volatility too.
• Second-order themes: Healthcare, Utilities and Energy can benefit from AI adoption while also offering different drivers of return.
• Areas beyond AI: sectors, regions and asset classes with little direct short-term link to AI can help steady portfolios when the most popular parts of the market lose altitude.

For AJ Bell portfolios, the aim is not to chase every new name as it enters the market. It is to capture long-term structural growth while keeping enough ballast elsewhere in the portfolio for periods when the AI trade starts to shake.

SpaceX’s public-market arrival is therefore not just a test of one company. It is a test of how different index frameworks absorb businesses of this scale. For diversified portfolios, the message is simpler: the AI opportunity is real, but it should not be the only engine in the portfolio.