Elon Musk's companies: what he owns, runs and connects

Start with the verb, not the logo

A founder can start a company without owning all of it forever. A chief executive directs a company but may hold only part of the stock. A shareholder owns a slice. A parent company owns a subsidiary. Musk can be founder, executive and shareholder at once, which is why a quick list often sounds more certain than the paperwork allows.

The 2026 map, with the boxes in the right places

The biggest box changed in 2026. SpaceX's June 5 prospectus identifies Musk as its founder, CEO, chief technical officer, chair and principal shareholder. The same filing says xAI became a wholly owned SpaceX subsidiary on February 2, 2026. Because xAI had acquired X on March 28, 2025, the social platform now sits one level farther down: SpaceX owns xAI, and xAI owns X.

Cursor is the newest branch. A June 16 SpaceX filing laid out a merger that would make the coding company a wholly owned subsidiary. Cinco Días reported that the transaction closed on August 14, 2026. That calendar date matters. An explainer written from the June agreement alone would still call the deal pending.

Starlink is a service, not another Musk holding company

Starlink frequently appears beside Tesla and SpaceX in lists, as if it were a third sibling. SpaceX's prospectus calls Starlink our global connectivity platform and treats its subscribers, satellites and revenue as parts of SpaceX's business. In other words, a customer may buy internet from Starlink, but the corporate roof over that service is SpaceX. The brand is famous enough to look independent. The filings say otherwise.

Tesla is the neighboring house

Tesla has its own stock, board and filings. Its 2025 annual report amendment listed Musk as beneficial owner of 20.3 percent as of December 31, 2025 and says he has served as CEO since October 2008. That is a very large stake. It is not sole ownership, and it does not turn Tesla into a SpaceX subsidiary. Millions of other shares sit with other investors.

There is a pleasing little two-way connection in the paperwork. SpaceX's prospectus says Tesla held less than 1 percent of SpaceX after the offering and records business between the two companies. Shared projects, purchases and a shared leader can make firms look like one household from the curb. Separate filings and a small cross-investment show two houses exchanging mail.

Neuralink and The Boring Company stay outside the big box

Both are private, so their ownership is less transparent than Tesla's. The SpaceX prospectus and Tesla's current leadership profile identify Musk as a founder and CEO of Neuralink and The Boring Company. Neither source places them under SpaceX or Tesla. SpaceX even records transactions with The Boring Company as dealings with an affiliated entity, the sort of language companies use when the cousin is close but does not live in the house.

It is therefore safer to say Musk founded and runs those businesses than to invent a current ownership percentage. Private-company cap tables change, and no public filing we reviewed supplies a clean August 17, 2026 number for either one. Unknown is a perfectly respectable box on a trustworthy map.

Two old names belong in the history drawer

Zip2 and PayPal still turn up in searches for Musk's companies, but they are origin-story companies, not current holdings. Tesla's filing says Compaq acquired Zip2 in March 1999 and eBay acquired PayPal in October 2002. The Associated Press's 2026 company guide makes the same useful distinction between the businesses that built his first fortune and the ventures he leads now.

How to read the next merger headline

• Look for the exact verb: acquired, merged, invested, founded and appointed do not mean the same thing.
• Find the parent: a well-known brand may be a product, a direct subsidiary or a subsidiary nested inside another subsidiary.
• Check the closing date: an announced deal is not a completed deal.
• Treat private ownership estimates as estimates unless a current filing gives the stake.

Then keep the tiny red car in mind. Tesla and SpaceX really did collaborate on an object that left Earth, and Starman really is wearing a SpaceX suit behind the wheel. It is a delightful piece of corporate family history. It is not an ownership chart. The clean chart begins with verbs: Musk runs, founded, owns shares in, or controls through a parent company. Once those words are in place, the empire stops looking like a tangle and starts looking like a set of well-labeled doors.