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The Micron Technology headquarters in Boise, Idaho, on March 28, 2021.

Check out the companies making headlines in midday trading Tuesday.

PagSeguro — Shares popped 4.1% on Tuesday after Citi upgraded the Brazilian payment stock to buy from neutral. The firm called the company's fourth-quarter earnings unsurprising and said it is still in rough waters, but shares were more attractive following recent underperformance. Stone, which was also upgraded by Citi to buy from neutral, edged higher as well on Tuesday.

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