Two of the more credible voices in the Elon Musk orbit are openly speculating that Tesla (NASDAQ: TSLA | TSLA Price Prediction) and the privately held SpaceX could combine within the next decade. Deepwater Asset Management’s Gene Munster put the odds at over 50% within five to ten years, framing the combined entity as a potential “sovereign AI company” spanning physical AI, robotaxis, Optimus, and SpaceX’s launch and satellite assets. Walter Isaacson, who chronicled Musk’s operating style at close range, has echoed the convergence thesis in recent interviews..

Why the Convergence Thesis Has Teeth

Tesla’s Q1 2026 disclosures show the financial plumbing between Musk’s companies tightening materially. Tesla put $2 billion of equity into SpaceX and is partnering with SpaceX on what Tesla describes as the largest chip fab in the U.S., breaking ground on a vertically integrated semiconductor research facility at the Gigafactory Texas campus. That follows a Samsung deal for advanced AI inference and training silicon. Tesla also booked $430.1 million in revenue from xAI and $143.3 million from SpaceX in 2025.

Wedbush’s Dan Ives has gone further, putting odds of a SpaceX-Tesla merger at 80% to 90%. Ross Gerber has described the potential entity as a “Berkshire Hathaway of AI.”

Musk’s Own “Convergence” Language

Musk has repeatedly described his ventures as solving overlapping problems: shared chip design, shared robotics talent, shared manufacturing. Court testimony from Shivon Zilis recently revealed that Musk had previously offered Sam Altman a Tesla board seat while discussing an OpenAI tie-up—evidence of a long-running pattern of trying to consolidate his AI bets. Tesla’s $25 billion 2026 capital expenditure plan, weighted toward robotics, autonomy, and a new chip factory, only deepens the overlap with SpaceX engineering.

What It Would Mean for Tesla Holders

Tesla holders would gain economic exposure to SpaceX, Starlink, and xAI inside one ticker, with a SpaceX IPO valuation potentially around $1.75 trillion serving as the anchor. The bear case is dilution and governance complexity. SpaceX is privately held, its valuation is contested, and combining a public automaker (trading near $410 a share and down 8.8% year to date) with a defense-adjacent rocket company would invite extensive regulatory review.

Polymarket traders are unconvinced, pricing only a 17% probability of an announcement by December 31, 2026. Tesla’s own Q1 2026 8-K is where investors should keep watching the convergence story unfold.