Take a look at the companies making headlines in midday trading. Signet Jewelers — The jeweler’s first-quarter revenue forecast fell short of Wall Street expectations, sending its shares down 11%. The company said it expected revenue between $1.47 billion and $1.53 billion, while analysts polled by FactSet forecast revenue of $1.61 billion. Chipotle — Shares of Chipotle rose 6.4% to a record high after the Mexican fast-casual chain announced its board of directors approved a 50-to-1 stock split. The plan was announced to the public on Tuesday and is expected to take effect in June if approved by shareholders. Deutsche Bank also raised its price target on the stock, citing strong growth prospects. Mobileye Global — Shares of Volkswagen rose 6% after the company said it would strengthen its partnership with the automotive technology company. Mobileye will provide the European automaker with new self-driving technology. FMC — Shares of the chemicals maker rose nearly 5% after receiving a rating upgrade from UBS. The bank believes the stock could rise as FMC recovers to meet or exceed guidance, margins improve and the market sees destocking as over. Riot Platforms – The Bitcoin mining stock rose 4% after JPMorgan upgraded it to Overweight from Neutral, citing the company’s “unique combination of industry-leading power contracts, scale and liquidity.” Best Buy — Shares of the electronics retailer rose nearly 3% after Telsey upgraded the stock to outperform from market perform, citing stability brought by replacement cycles and innovative products like Ray-Ban glasses. and signs of improvement. Boeing Co. — Shares of Boeing Co. rose more than 2% amid a flurry of reports about the troubled airline. Bloomberg, citing unnamed sources, said Boeing is considering the possibility of selling at least two of its defense businesses. Reuters, citing sources familiar with the matter, said Boeing was exploring how Spirit AeroSystems could reduce its exposure to Airbus. Carmax — Used car inventory rose 2% after Needham purchase upgrade. The investment firm said Carmax should benefit as supply increases in the used car market and interest rates fall. General Mills — Shares of General Mills rose 1.7% after the food company reported third-quarter results that beat expectations. General Mills reported adjusted earnings of $1.17 per share on revenue of $5.1 billion. Analysts surveyed by London Stock Exchange Group (LSEG) had expected earnings of $1.05 per share on revenue of $4.97 billion. Equinix — Shares of Equinix fell more than 4% after short seller Hindenburg Research issued a report on the data center company. —CNBC’s Sarah Min, Alex Harring, Jesse Pound, Lisa Han and Michelle Fox contribute.