MRNA, RIVN, LYV and more

Check out the companies making headlines in midday trading. Live Nation — Shares of the entertainment company rose 6% after an upgrade to overweight from equal weight at Morgan Stanley. "We have increased conviction in durable long-term growth given Live Nation's unique ability to capture the expanding global live...

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WMT, CSCO, PANW and more

Check out the companies making headlines in premarket trading. Walmart — The big box retailer fell 4.7% after reporting adjusted earnings-per-share guidance for the year of $6.40 to $6.48, lighter than analysts expected. However, Walmart's adjusted earnings of $1.53 per share topped the $1.52 expected from analysts polled by...

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AMD, Wayfair, Humana and more

Check out the companies making headlines before the bell. WeWork — Shares plunged 35.5% following a report in the Wall Street Journal that the shared workspace company is planning to file for Chapter 11 bankruptcy protection as soon as next week. Advanced Micro Devices — The chipmaker dipped more...

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