Space Rockets, Satellites, Data Centers and Grok: What's the Right S&P Sector Index for SpaceX?

Space Rockets, Satellites, Data Centers and Grok: What's the Right S&P Sector Index for SpaceX?

SpaceX is on the cusp of making its debut in the public markets with an ambitious target valuation of $1.75 trillion on the Nasdaq Stock Market. As the company prepares for its initial public offering (IPO), it could swiftly be included in prominent indexes such as the Nasdaq 100 and S&P 500.

Market observers and investors are strategizing on how best to engage with this IPO, including acquiring shares of the S&P Sector and Industry Indexes that SpaceX will inhabit.

Upon going public, the financial data firms S&P Global and MSCI will classify SpaceX within specific sector and industry indexes. Given SpaceX's diverse engagements—ranging from space rockets, satellite internet services, to data centers and the artificial intelligence platform Grok—this classification process may present unique challenges.

How Sector Classification Works

Initially, a newly listed company is categorized into one of 163 "sub-industries." This classification narrows down to one of 74 "industries," then to one of 25 "industry groups," ultimately resulting in assignment to one of the 11 S&P Sectors. These sectors encompass information technology, communications, industrials, real estate, materials, health care, consumer staples, consumer discretionary, financials, utilities, and energy.

MSCI and S&P evaluate four tiers to inform their sector classification decisions.

Revenue as the Primary Factor

A critical consideration for MSCI and S&P is which segments of a company contribute the most revenue. According to SpaceX's S1 filing, "Our Space and Connectivity segments contributed the substantial majority of our consolidated revenue in the three months ended March 31, 2026, and the year ended December 31, 2025, demonstrating the benefits of their scale and operating leverage in our vertically integrated business model."

The space component refers to revenue generated from rocket launches and space missions. SpaceX earns this revenue through the launch and mission services of its Falcon 9, Falcon Heavy, and Dragon vehicles, catering to both commercial and government clients.

Regarding connectivity, SpaceX references Starlink, which offers high-speed internet service worldwide. This arm of the business reported revenue exceeding $11 billion in 2025.

Space-related operations made up approximately $4 billion of revenue last year. Furthermore, SpaceX’s xAI division, which includes Musk's artificial intelligence platform Grok, generated $3.2 billion in 2025. xAI also profits from its data centers located in Memphis, Tennessee, and Southaven, Mississippi.

Representatives from MSCI and S&P emphasize that while revenue is a primary determinant for sector classification, "Earnings and market perception, however, are also recognized as important and relevant information for classification purposes and are taken into account during the annual review process."

Leading Candidate: Communications Services Sector

Based on the substantial revenue contributions from Starlink, SpaceX is poised to be classified under the S&P Communication Services Sector. This sector currently includes notable companies such as Alphabet, Meta, Netflix, and Echostar—a stakeholder in SpaceX with a holding of between 2% and 3%. Other members of this sector comprise AT&T, Verizon, Charter Communications, and Walt Disney.

Alternative: Industrials Sector

There is potential for SpaceX to be placed within the industrials sector in the future, which encompasses space and defense firms such as Howmet, Boeing, GE Aerospace, Northrop Grumman, L3, and General Dynamics.

Data Centers and Space-Based Computing

While SpaceX operates some terrestrial data centers, Elon Musk has indicated that the future of this segment lies in space. At the U.S.-Saudi Investment Forum in November 2025, Musk asserted: "If you want to have something that is producing a million times more energy than Earth can possibly produce, you must go into space; that's where it is kind of handy to have a space company. Even in the four- or five-year time frame, the lowest cost way to do AI compute will be with solar-powered AI satellites."

Most conventional data center businesses are classified within the S&P Real Estate Sector. However, Musk's vision for a space-based data center competitor may warrant a different categorization, given it would not occupy terrestrial land.

In its S1 filing, SpaceX positions itself as a data center company, stating: "We believe SpaceX is uniquely positioned to deploy and operate data centers in orbit that can eventually achieve a lower cost than terrestrial data centers over time due to our extreme vertically integrated approach across launch, satellite manufacturing at scale, network connectivity, and terrestrial data center expertise."

Currently, the S&P Real Estate Sector houses three major data center companies: Equinix, Digital Realty Trust, and Iron Mountain. All three have seen significant stock performance improvements as of 2026.