Check out the companies that made headlines in midday trading: Hershey, Mondelez International — Hershey’s stock price tumbled after Bloomberg News reported that Cadbury and Oreo maker Mondelez is looking to buy the chocolate company again It rose by 10.9%. News of the attempted takeover sent Hershey’s stock price to its highest pace since June 2016, when Hershey previously announced a proposed $23 billion acquisition from Mondelez. Mondelez fell about 2.3%. Chinese stocks — U.S.-listed stocks PDD Holdings and Jingtocom each surged more than 10% after China’s Politburo pledged to ease its monetary policy stance to boost domestic growth in 2025. Alibaba and Tencent shares rose 7.5% and 6%. Automaker Nio rose more than 12.3%. Trip.com and Baidu stock prices also rose. Macy’s — Shares rose about 1.8% after activist investor Barrington Capital called on the department store chain to cut spending and reevaluate alternatives for its Bloomingdale’s and Blue Mercury businesses. Workday, Apollo Global Management — Shares of software company Workday rose 5% after S&P Dow Jones Indices announced that the company’s stock will be added to the S&P 500 later this month. Apollo Global Management also announced a new addition to the S&P 500, hitting a 52-week high on Monday, but its stock price fell about 3%. Warner Bros. Discovery, Comcast — Shares of Warner Bros. fell about 0.9% after the media company signed a broad multi-year cable distribution deal with Comcast. This allows the launch of the Max streaming service in Europe and the rights to the television series of “Harry Potter.” Comcast stock fell 9.5%. Stellantis — Shares of automaker Stellantis rose 0.6% after CNBC reported that prominent executive Tim Kuniskis will immediately return to the automaker to lead the company’s Ram Truck brand again. The decision comes just about a week after Stellantis CEO Carlos Tavares abruptly resigned amid problems in the company’s North American market. Nvidia — Shares fell nearly 2.6%. China’s State Administration for Market Regulation has launched an investigation into the company, specifically regarding possible violations of the country’s antitrust laws related to Nvidia’s acquisition of Mellanox. Advanced Micro Devices — The chipmaker fell about 5.6% after Bank of America downgraded its rating from buy to neutral. The company said there are increasing competitive risks in artificial intelligence given Nvidia’s market dominance, and other chipmakers’ growing preference for custom chips, which could limit AMD’s potential to gain market share. He pointed out that there is. DOW — The chemicals maker rose 1.8% after it said it would sell a 40% stake in some infrastructure assets on the U.S. Gulf Coast to a fund managed by Macquarie Asset Management. The transaction is expected to close in the first half of 2025. Interpublic Group of Companies, Omnicom Group — Interpublic rose 3.5%, while Omnicom fell 10.3%. The companies announced that Omnicom will acquire Interpublic in a stock-for-stock transaction. The transaction is expected to close in the second half of 2025. SUPER MICRO COMPUTERS — Shares of the beleaguered server maker rose 0.5% after Super Micro was granted an extension by the Nasdaq to allow it to publish its delayed annual report. The company must now remain listed on the exchange until February. SoFi Technologies — Shares have more than doubled in the past three months but are overvalued after Bank of America Global Research downgraded the fintech and financial provider from neutral to underperform. The stock price fell 2.8%. The stock has risen following Donald Trump’s election victory, as investors believed the company would benefit from stricter student loan forgiveness policies expected under the Trump administration. SolarEdge Technologies — Shares rose 11.7% after the solar energy company announced it had begun shipping its “USA Edition” home batteries. This product is designed to qualify for the Domestic Content Bonus Tax Credit. This is a provision that is part of the Inflation Control Act, which encourages the development of green technologies built using a specified percentage of domestically produced steel, iron, or products. Disclosure: Comcast’s NBCUniversal is the parent company of CNBC. —CNBC’s Alex Harring, Jesse Pound, Sarah Min and Michelle Fox Theobald contributed reporting.