The largest IPO in history gives Elon Musk's rocket company a win, and signals how massive the next OpenAI and Anthropic deals could be.

The ChatGPT maker’s filing joins Anthropic’s AI listing wave and turns “someday” into a real timing option.

The filing fixes SpaceX at 555.6 million shares at $135 apiece, while Musk still controls 82.4% of voting power and public buyers get a sliver of the float.