Across two wide-ranging interviews with Forbes, Altman covered more ground than could fit in our profile. Here are his remarks on everything from vaccine research to critics who argue he backs companies to solve problems he helped create.

On December 15, Musk became the first person ever worth $600 billion, after private investors valued SpaceX at $800 billion.

Billionaires Elon Musk, Jeff Bezos and Mark Zuckerberg have seen their wealth grow by hundreds of billions during Trump’s second term. See who gained most.

Musk responded to newly released Epstein files that include him, writing on X that he had “very little correspondence” with Jeffrey Epstein and did not go to his island.