3 Most Upgraded Stocks Last Month According to MarketBeat

Three technology stocks dominated analyst upgrades in May 2026: Datadog and Marvell Technology tied for most upgraded with 32 upgrades each, while Snowflake received 28 upgrades. All three stocks surged significantly—Datadog up 87.1%, Marvell up 24%, and Snowflake up 87%—driven by strong earnings beats, raised guidance, and momentum in the AI software and hardware trade. However, current price targets suggest potential downside for Datadog and Marvell, though Snowflake shows moderate upside potential.