Francesca Fontana

The FAA updated its plan to start with traffic cuts of 4% at select airports on Friday.

The reductions will increase to 6% of capacity by November 11th, 8% by November 13th, and 10% by November 14th.

Plus, Transportation Secretary Sean Duffy said on Friday that if the shutdown continues, flight cancellations across the U.S.

could rise to 15 or even 20 percent.

And you can go to WSJ.com and find a great explanatory article by some of my colleagues with a map of those airports, and you can get updated information about cancellations.

In reaction to Thursday's order, airline shares fell, including American Airlines, which lost 2% on the day.

But on the week, American gained 4%.

Next up, Elf Beauty's guidance for the year disappointed Wall Street.

Let's start with the good news.

So late Wednesday, the beauty company said it logged a 14% increase in quarterly sales as it gained market share across both high and low income consumers in the period.

The company also got a boost from its purchase of Rose.

which is Hailey Bieber's cosmetics and skincare line.

Meanwhile, like I said, e.l.f.

's annual forecast for adjusted earnings per share and sales came in under analysts' expectations.

e.l.f.

's CEO addressed this by saying that expectations were dialed up a bit too high in the absence of the company providing guidance in recent quarters.

e.l.f.

's shares tanked 35% on Thursday, and on the week the stock lost just about 40%.

Last but not least, let's talk about a stock that's gotten a big boost in the AI arms race and that might be a target of investor jitters.

That's Palantir Technologies, the data analytics company that's become one of the hottest names on Wall Street.