Stocks making the biggest moves midday: Frontier Group, JPMorgan, Apple, Stellantis, BlackRock and more

Check out the companies making headlines in midday trading. Frontier Group — Shares plunged 11% after the airline cut its first-quarter outlook and pulled its full-year outlook, citing weaker-than-expected demand and economic uncertainty. Stellantis — Stellantis shares dipped about 1% after the c...
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