Last week, SpaceX's initial public offering was the largest in history.

And on the morning, we're recording this Tuesday, it briefly passed Microsoft as the fourth largest company by market capitalization.

All the while, Elon Musk, the owner of SpaceX, has become the world's first trillionaire,

thanks to his shares in the AI-to-Rocket's business.

But for some, the SpaceX listing and its blockbuster valuation is a reason to worry, not celebrate. In the run-up to the

IPO, U.S. Democratic Senator Elizabeth Warren wrote to the head of the Securities and Exchange

Commission asking the regulator to delay the listing. Warren is a ranking member of the Senate

Banking Committee. She joins me now to talk about

why she opposed the SpaceX IPO and what it tells us about the American economy. Senator Warren,

welcome. Thank you very much. Thanks for having me. So let's start with the most recent updates.

SpaceX has shot up in value by more than a trillion dollars within just several days of going

public. That's from an initial valuation

that was already the highest in history. What are your thoughts as you're watching this?

Look, I want Americans to have opportunities to invest in companies that help our economy grow.

But the confidence of investors is a big reason why our markets are the envy of the world.

And this particular IPO has enough red flags on it that it should stop anyone in just thinking about it.

So look at it this way.

First of all, the valuations.

Elon Musk valued his company with numbers that analysts call nonsensical and out of this world, in part,

based on the merger of SpaceX and XAI, which means, I guess, Elon Musk got in a room with Elon Musk

and negotiated on how much the merger should be worth.

Then secondly, SpaceX pushed the major index providers to change their rules to force SpaceX

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