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Check out the companies making headlines in midday trading.
Nikola — Theelectric truck maker saw its stock surging more than 16% a day after the company announced on Twitter that its first customer delivery is done and signaled there's more to come.
Novavax — Vaccine producer Novavax fell 2.3% despite reporting on Wednesday that a two-dose treatment of its Covid-19 vaccine demonstrated strong immune responses against the omicron variant. It also said the response to omicron was
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