Check out the companies making headlines in midday trading. Berkshire Hathaway – Berkshire Class B shares fell 1.9% in intraday trading. Earlier in the session, the group's shares reached all-time highs, following strong operating profits in the fourth quarter. R1 RCM — Shares rose 25.1% after major holders of the healthcare payment technology company indicated they were considering strategic alternatives, including taking R1 RCM private, according to a filing with the U.S. Securities and Exchange Commission. Freshpet – Shares rose 19.7%. The pet food company reported fourth-quarter adjusted earnings before interest, taxes, depreciation and amortization of $31.3 million, beating the FactSet estimate of $27.4 million. Revenue of $215.4 million was higher than $204.6 million. HashiCorp – Shares jumped 14% after Morgan Stanley upgraded the software company to overweight from equal weight. HashiCorp should benefit from the return of cloud initiatives, the bank said. Pilgrim's Pride – Shares rose 8% after the meat maker beat Wall Street expectations for the fourth quarter. Pilgrim's Pride reported earnings of 59 cents per share, excluding items, on revenue of $4.53 billion, while analysts surveyed by FactSet called for earnings of 43 cents per share on revenue of $4.48 billion for the quarterly period. Domino's Pizza – Shares rose 5.9% after the restaurant chain announced it would increase its dividend by 25%, to be paid on March 29. Domino's board also authorized an additional stock buyback program of up to $1 billion. Amer Sports – The sports retailer's stock rose 3.6% on the back of a series of bullish calls from Wall Street analysts. Many of those analysts said they expect an uptick for the parent company of brands like Wilson and Arcitrix, which went public earlier this month. Micron Technology – Shares rose 4% on AI-related tailwinds after the semiconductor manufacturer announced it would begin mass production of its 3E high-bandwidth memory solution. The company explained that this HBM3E solution consumes 30% less power than competitors, providing data centers with the memory bandwidth to seamlessly adapt their AI applications. Moderna – Vaccine maker shares fell 2.5% after HSBC credit rating downgrade. HSBC said Moderna's RSV vaccine appears less effective than rivals, which could hurt future growth. Alcoa – Shares of the aluminum maker fell 4.5%. Alcoa announced on Sunday that it has entered into an agreement to acquire its Australian joint venture partner Alumina Limited for approximately $2.2 billion in an all-stock deal. Fluence Energy – Shares rose 7.9% after Susquehanna Financial upgraded the energy storage stock to positive from neutral, saying the stock's recent weakness is an attractive entry point. Fresh Del Monte Production – Shares fell 3% after the agricultural company reported quarterly results that fell short of expectations. In the fourth quarter, Fresh Del Monte Produce reported adjusted earnings of 25 cents per share, below the 31 cents earnings per share that analysts surveyed by FactSet had expected. Revenues of $1.01 billion were below the consensus estimate of $1.03 billion. PPG Industries – Shares fell 1.4% after PPG Industries said it was reviewing strategic alternatives for its architectural coatings business in the U.S. and Canada. – CNBC's Brian Evans, Michelle Fox, Lisa Kailay Hahn, Alex Haring, Tanaya Machel, Jessie Pound and Piya Singh contributed reporting.