Start with the clean answer: xAI is no longer a standalone company.
After SpaceX completed the acquisition in 2026, xAI, Grok, X, and Colossus compute all became part of the SpaceX / SpaceXAI frame. That is also why this site does not maintain a separate market/ai/xai vendor: legacy xAI routes point to SpaceX Watch.
One note up front: SpaceX has not yet completed a public listing, while Tesla, NVIDIA, and Cisco are public companies or public-company investment arms. This page organizes ownership information only. It is not a view on SpaceX’s IPO, Tesla, NVIDIA, or any indirect exposure trade.
The 30-Second Answer
As of June 7, 2026, the shortest answer to “who owns xAI?” is: SpaceX owns xAI; xAI is a wholly owned subsidiary of SpaceX.
SpaceX’s S-1/A says the xAI Merger closed on February 2, 2026, and that xAI became a wholly owned subsidiary. Before that, xAI had acquired X Holdings on March 28, 2025.
On valuation, Reuters reported that the transaction valued SpaceX at $1 trillion and xAI at $250 billion, and that xAI investors would receive 0.1433 SpaceX shares for each xAI share. The S-1/A also discloses a fixed 0.1433 exchange ratio for xAI common stock into SpaceX common stock on a pre-2026-stock-split basis.
Before the Merger: xAI’s Final Big Funding Round
The most important public funding milestone before xAI folded into SpaceX was its 2026 Series E.
xAI’s official announcement says the round was upsized from a $15 billion target to $20 billion. Participants included Valor Equity Partners, Stepstone Group, Fidelity Management & Research Company, Qatar Investment Authority, MGX, and Baron Capital Group. Strategic investors included NVIDIA and Cisco Investments.
Read this conservatively: the company confirmed the $20 billion total and investor roster, but it did not break out each investor’s individual amount or fully describe the security type. So it would be wrong to turn the list into a precise shareholder ranking.
| Date | Event | Amount / Valuation | Investors and Notes |
|---|---|---|---|
| 2025-03-28 | X Merger | Full revaluation not disclosed here | S-1/A says X Holdings was acquired by xAI |
| 2026-01 | Series E | $20 billion raised, above a $15 billion target | Valor, Stepstone, Fidelity, QIA, MGX, Baron; NVIDIA and Cisco as strategic investors |
| 2026-02-02 | SpaceX acquires xAI | Reuters reported $1T for SpaceX and $250B for xAI | All-stock deal; xAI becomes a wholly owned SpaceX subsidiary |
How the SpaceX xAI Merger Changed Shareholders
The easy misunderstanding is to think xAI investors disappeared.
They did not. They moved from owning xAI economics into owning SpaceX economics under the merger terms. The S-1/A says xAI’s redeemable convertible preferred stock converted into SpaceX common stock on the merger date, and xAI common stock converted into SpaceX common stock at a fixed exchange ratio. Reuters reported that ratio as 0.1433.
So when you search for “xAI shareholders” today, read it in two layers:
- Company layer: xAI is a wholly owned subsidiary, so the direct owner is SpaceX.
- Parent-company layer: former xAI investors, employees, and option holders rolled into SpaceX equity or related arrangements; ultimate control is shaped by SpaceX’s dual-class structure and Elon Musk’s voting power.
The S-1/A beneficial ownership table reports Elon Musk with roughly 85.1% of SpaceX voting power and control of a majority of the Class B voting stock. That makes SpaceXAI’s governance risk highly concentrated around Musk.
NVIDIA, Cisco, and Colossus: Investors as Compute Partners
xAI’s investor list is also a compute map.
NVIDIA and Cisco were named as strategic investors in the Series E announcement, with xAI saying they support its compute infrastructure and large GPU-cluster buildout. That matters because Grok’s competitive position is not just about the model team; it is also about Colossus-scale infrastructure.
After the merger, that infrastructure story becomes SpaceXAI’s story. xAI also announced a Colossus compute partnership with Anthropic, effectively turning self-built compute into a service for another major model company. That makes SpaceXAI look like a model lab, a compute supplier, and an infrastructure company at the same time.
The upside is a vertically integrated pitch: capital, chips, network, real-time data, and launch capacity can be bundled together. The downside is that cost and governance risks get bundled too: GPUs, power, data centers, X-platform content risk, and SpaceX IPO disclosure all feed back into how xAI / Grok is valued.
Backing and Dependence
For xAI, being swallowed by SpaceX has an obvious upside: it moved from a cash-hungry AI startup into a combined rocket, satellite-network, social-platform, and AI-compute group.
But it also makes ownership harder to read. Former xAI investors are no longer only underwriting Grok; they are underwriting the more complex SpaceX parent. SpaceX investors, meanwhile, now have to understand rockets, Starlink, X, and AI cash burn and risk together. This is not a pure model company like OpenAI or Anthropic. It is a Musk industrial stack.
So when you search “who owns xAI,” do not stop at old xAI funding headlines. The correct reading is: xAI’s corporate ownership moved up to SpaceX; investor economics rolled into SpaceX; governance risk concentrates around Musk and SpaceX’s dual-class shares.
Penchan’s Take
The key to xAI ownership is not a long investor name list. It is that the independent-company era is over.
The 2026 Series E tells us who backed xAI at the last big funding moment before the merger. The SpaceX xAI merger tells us how those rights were folded into SpaceX. From that moment on, Grok is not only a model-competition story. It is a SpaceXAI, Starlink, X, Colossus, and Musk-control story.
Further reading: What kind of company is SpaceX, the full xAI-era deep dive, why Anthropic rents Colossus compute.