Tesla Owns Nearly 19 Million Shares of SpaceX: What TSLA Investors Need to Know Before the IPO

© Robert Daemmrich Photography Inc / Getty Images I’ve been digging through the SpaceX S-1 filing for hours, and one number deserves its own spotlight in every TSLA model: Tesla’s beneficial ownership of SpaceX Class A common stock. I’m not going to waste your time with a huge article about this. I thought you needed to know right way, so here are the bullets: The Metric Tesla (NASDAQ:TSLA | TSLA Price Prediction) is the beneficial owner of 18,990,195 shares of SpaceX Class A common stock as of May 1, 2026, representing an ownership interest of less than 1.0% of total outstanding Class A shares after giving effect to the offering. Why It Matters This is an off-balance-sheet asset that Tesla’s auto-and-energy revenue mix completely hides. Tesla already disclosed a $2B investment in SpaceX equity in its Q1 2026 8-K filed April 22, 2026. Once SpaceX prices, that stake gets a public mark, and Tesla shareholders inherit a direct claim on rocket and Starlink economics. The Current State Polymarket traders assign a 61% implied probability to a SpaceX IPO valuation in the $1.75T to $2.00T range, with a 70.5% probability of closing first-day market cap above $2T. The same crowd prices SpaceX higher than Tesla on June 30 at 88.5%. What to Watch Bullish: the Terafab chip collaboration announced March 2026, plus Intel joining in April 2026, deepens the SpaceX relationship beyond passive equity. Bearish: only 1.4% odds of a Tesla-SpaceX merger announcement by June 30 means the two stay separate, and minority-stake accounting limits how much value flows through. The (Very Quick) Verdict With TSLA trading at $417.26 on a 370 trailing P/E, the 19 million SpaceX shares are the hidden asset the consensus model isn’t pricing, and the IPO is the moment that changes.