Key Takeaways

Palantir ( PLTR ) shares slid Monday, amid a broader market decline in the wake of a U.S. credit downgrade from Moody's Friday.

Moody’s said the U.S. faces “persistent, large fiscal deficits” that show no signs of slowing. The downgrade places the U.S. government one notch below Moody’s top Aaa status. (Read Investopedia's live coverage of today's market action here.)

Palantir shares were down 3% in recent trading Monday. Still, shares of the AI software company have added about two-thirds of their value in 2025 and hit a record high last week on optimism around an improving trade environment.

Bank of America analysts last week called the company a “market definer” for companies looking to leverage artificial intelligence. The bank said Palantir’s recent deal with the North Atlantic Treaty Organization, which came despite pressure on the body to buy from a European firm, “hints at the superior capabilities [the company] can provide customers.”

Earlier this month, Palantir reported better-than-expected quarterly sales and raised its full-year outlook.

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