Check out the companies that made headlines in midday trading: Spirit Airlines — Trading in the low-cost airline’s stock was suspended Monday after Spirit filed for bankruptcy. Trump Media & Technology Group — Shares of President-elect Donald Trump’s media company fell about 5%. Stocks have become increasingly volatile following President Trump’s election, but are still up more than 52% in 2024. Liberty Energy (Oklo) — Liberty Energy shares rose about 5% after President-elect Donald Trump nominated Chris Wright as the company’s next CEO. Secretary of Energy. Shares in nuclear power company Oklo, of which Wright is a director, rose more than 20%. Roku — Shares rose about 4% after Baird upgraded the stock from neutral to outperform. Baird said investors are currently “overlooking” the long-term potential and changes in the business context after streaming stocks’ share prices have fallen significantly this year. Redfin — Shares of the online real estate company fell 3.4% after Goldman Sachs downgraded the stock from neutral to sell. The bank cited increased competition for the phones as the reason. CVS Health — Shares of the drugstore operator rose nearly 6% after the company decided to add four new board members in a deal with Glenview Capital. Separately, Wells Fargo upgraded the stock from equal weight to overweight. The company believes that the downside to its health insurance division, Aetna’s aggressive growth strategy, has peaked. Robinhood — The financial services platform’s stock rose more than 8% to a new 52-week high after Needham upgraded the stock from hold to buy. The company believes changes in the U.S. Securities and Exchange Commission under the new Trump administration will lead to an increase in its product launches. Piper Sandler also became even more bullish on the name on Monday, with an updated price target reflecting more than 11% upside from Friday’s closing price. SUPERMICRO COMPUTERS — The chipmaker’s stock soared more than 17% after Barron’s reported that Supermicro plans to file its annual report plans by Monday to avoid delisting from the Nasdaq. . Moderna — The biotech company’s stock rose more than 5% after HSBC upgraded the stock from hold to buy, saying it is undervalued. The company said Moderna’s “pipeline is worth more than the market values it,” with future stock catalysts expected by the end of this year for a Phase 3 study of the company’s cytomegalovirus (CMV) vaccine. He pointed out that this was an interim analysis. Warner Bros. Discovery — The media conglomerate’s stock rose nearly 3% after the company reached a settlement with the National Basketball Association over alleged breach of contract, the Wall Street Journal reported. —CNBC’s Alex Harring, Sean Conlon, Hakyung Kim, Pia Singh and Michelle Fox contributed reporting.