Here’s a look at the companies making headlines in midday trading: Spirit Airlines — Trading in the discount airline’s stock was halted Monday after Spirit filed for bankruptcy. Trump Media & Technology Group — President-elect Donald Trump’s media company fell about 5%. Although the stock became increasingly volatile after Trump’s election, it rose more than 52% in 2024. Shares of Liberty Energy rose about 5% after Chris Wright was named his successor as energy secretary. Shares of Oklo Nuclear Energy, of which Wright serves as a board member, rose more than 20%. Roku — Baird upgraded its performance to outperform from neutral, sending the stock up about 4%. Baird said investors are now “ignoring” the long-term potential and changes in the business backdrop after streaming stock prices plummeted this year. Redfin – Shares of the online real estate company fell 3.4% after Goldman Sachs downgraded its rating to sell from neutral. The bank said the call was increasingly competitive. CVS Health — Shares of CVS Health rose nearly 6% after the pharmacy operator decided to reach a deal with Glenview Capital to add four new board members. Separately, Wells Fargo raised its rating on the stock from “equal” to “overweight.” The company believes the negative impact of aggressive growth measures at Aetna, the company’s health insurance unit, has peaked. Robinhood — Shares of the financial services platform rose more than 8% to hit a new 52-week high after Needham upgraded the stock to buy from hold. The company believes changes at the U.S. Securities and Exchange Commission under the new Trump administration will lead to more products from the company. Piper Sandler also became more bullish on the company on Monday, with its updated price target rising more than 11% from Friday’s closing price. Super Micro Computer — Super Micro Computer is expected to file its annual report on Monday in an effort to avoid listing on the Nasdaq, sending the chip maker’s stock price soaring more than 17% after Barron’s reported. Moderna — Shares of the biotech company rose more than 5% after HSBC upgraded the stock to buy from hold and said it believes the stock is undervalued. The company said Moderna’s “pipeline is worthy of exceeding market recognition for it,” noting that an upcoming catalyst for the stock is an interim analysis of the company’s Phase 3 study of its cytomegalovirus (CMV) vaccine expected by the end of the year. Warner Bros. Discovery shares rose nearly 3% after the media conglomerate reached a settlement with the National Basketball Association (NBA) over breach of contract charges, the Wall Street Journal reported. —CNBC’s Alex Harring, Sean Conlon, Hakyung Kim, Pia Singh and Michelle Fox contributed reporting.