NEW YORK — As Elon Musk's public companies settle in after record quarters, more investors are reaching for a sum-of-the-parts lens to make sense of the valuations. Rather than a single multiple, the approach values each business line on its own and adds them up, and for a sprawling complex like Tesla — NASDAQ: TSLA — and SpaceX — NASDAQ: SPCX, which now houses xAI and Grok — it can reveal value that a blended earnings multiple hides.
The exercise has gained urgency because so many of Musk's bets are crossing from story to revenue at once. A framework that once relied on hand-waving about "optionality" now has concrete segments to anchor to, several of which stepped forward in Tesla's record third-quarter report.
Breaking Tesla Into Pieces
Analysts who model $TSLA this way typically start with the automotive business as the cash-generating base, then layer on the energy and storage unit, which has become a fast-growing, higher-margin contributor. On top sit the emerging lines: a robotaxi network billed per ride, Full Self-Driving software sold as high-margin subscriptions, and Optimus, valued as an entirely new labor market rather than a car feature. Each carries its own growth rate and multiple, and the autonomy and robotics pieces are where bulls argue the largest unrecognized value sits.
The SpaceX Side of the Ledger
$SPCX brings a different mix. Starlink is modeled as a recurring-revenue connectivity utility with tens of millions of potential subscribers; the launch business is valued on cadence and reusability; and the Super Intelligence segment — Grok, Colossus, and enterprise AI — is treated as a high-growth software and compute franchise, with Musk projecting it could one day reach $1 trillion in revenue. Comparable AI names such as $NVDA give the sell-side a yardstick for that piece.
