Dollar Tree's Downgrade and Competitive Pressures

On this episode of Stock Movers:
- Dell (DELL) shares rise after the company roughly doubled its growth estimates for sales and profit for the next two years, citing demand for artificial intelligence products.
- AppLovin (APP) shares fall after news that the Securities and Exchange Commission has been probing AppLovin Corp.'s data-collection practices, according to people familiar with the matter.
- Dollar Tree (DLTR) shares fall after Jefferies downgraded the discount retailer to underperform from hold.

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