IBM, Walmart, Rocket Lab, Nvidia among biggest premarket movers
IBM, Walmart, Rocket Lab, and Nvidia were the biggest premarket stock movers, each influenced by different factors. Nvidia's strong quarterly sales growth and optimistic revenue guidance highlighted its role as a bellwether for the AI sector. Meanwhile, Walmart's performance exceeded expectations, indicating resilience in consumer spending despite broader economic concerns.
- ▪Nvidia reported a 62% year-on-year sales growth and guided for $65B in revenue for the January quarter.
- ▪Walmart beat Q3 expectations and raised its full-year outlook, suggesting stronger consumer spending.
- ▪The premarket movements reflect investor focus on AI, retail, cloud infrastructure, and space industries.
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IBM, Walmart, Rocket Lab, Nvidia among biggest premarket movers A mix of AI momentum, tariff anxiety, and space ambitions drove the most notable premarket stock swings. Share Add us on Google by Editorial Team May. 21, 2026 window.sevioads = window.sevioads || []; var sevioads_preferences = []; sevioads_preferences[0] = {}; sevioads_preferences[0].zone = "01f21ccf-2092-46b1-9ac7-8c44cc782e0f"; sevioads_preferences[0].adType = "native"; sevioads_preferences[0].inventoryId = "c5700508-581b-472c-8fdd-a931cdbfc8e1"; sevioads_preferences[0].accountId = "1e47efc1-ec2d-4fca-a8b9-354e249e5095"; sevioads.push(sevioads_preferences); Four names dominated the premarket ticker board: IBM, Walmart, Rocket Lab, and Nvidia.
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