Alex Ossola

The indexes are tweaking their rules so they can integrate IPOs faster.

So what does that mean for investors?

Jason Zweig writes the Intelligent Investor column at the Journal and joins me now.

Jason, can you give me some examples of those changes that I referred to that these index providers are making?

So why are these index providers looking to make these changes?

What's the motivation?

How do these changes that index providers are making benefit the companies that are going public?

So what does this mean for you if you own index funds?

That was WSJ columnist Jason Zweig.

Thanks so much, Jason.

And speaking of those mega-IPOs, the Journal has learned that SpaceX is looking at a valuation of around $1.75 trillion in its initial public offering.

Elon Musk's rocket maker is likely to sell under 5% of its shares, a much smaller portion than in a typical IPO.

It's still possible that those numbers could change before tomorrow afternoon, when SpaceX is aiming to file updated paperwork for the IPO.

That filing will give investors their first official look at SpaceX's potential valuation in the IPO.

Coming up, a newly proposed salary cap is threatening to cost baseball owners an entire season.

More on that after the break.

U.S.

stocks ended slightly higher.

The Dow led the gains and closed up nearly half a percent.

One standout in the stock market today?