See the companies making headlines in midday trading: GameStop – Meme shares jumped more than 25% in volatile trading amid speculation that Keith Gill, the man who inspired the epic 2021 short squeeze, may have a huge position game seller in the video. Gill, who goes by DeepF—–Value on Reddit, resurfaced Sunday evening, posting a screenshot of what could be his portfolio containing five million shares of GameStop common stock worth more than $100 million. He also held a position of 120,000 GameStop call options. AMC, another meme stock, jumped 10%. Both names were also among those affected by a technical issue on the New York Stock Exchange on Monday morning. Waste Management, Stericycle. Waste Management is buying Stericycle for $7.2 billion, the companies announced Monday. Stericycle shares jumped nearly 15%, while Waste Management shares fell 4%. Spotify — Shares of the music streaming company rose 4% after announcing a price hike for premium subscriptions in the US in July. This is the Swedish company’s second increase in a year. GSK — Shares of the pharmaceutical giant fell more than 9% after a Delaware court ruled that scientific evidence can be presented in about 75,000 cases alleging that the discontinued heartburn drug Zantac may contain a carcinogen. Paramount Global. The media company’s shares rose more than 7% after CNBC’s David Faber reported that the firm and Skydance had agreed to terms of a merger. The deal could be announced in the coming days and is pending approval from regulator Paramount Global. shareholder Shari Redstone, he said. Lattice Semiconductor, Coherent — Lattice shares fell 11% after CEO Jim Anderson left to lead Coherent, whose share price jumped 17%. Esam Elashmawy, Lattice’s chief marketing and strategy officer, has been named interim CEO while the search for a permanent leader continues. Becton, Dickinson and Company – Health technology shares rose 2.6% after announcing it would acquire Edwards Lifesciences’ critical care products in a deal valued at $4.2 billion. Edwards Lifesciences shares rose 0.5%. MarineMax — Shares of the boat and yacht services company rose 24% after Bloomberg News reported that OneWater Marine was in talks to buy the company. OneWater Marine will pay $40 per share, according to the report, which cites people familiar with the matter. Shares of India and Mexico. Stocks related to India and Mexico have moved since the elections in each country. The iShares MSCI India ETF (INDA) rose 3% to hit a 52-week high as exit polls show Prime Minister Narendra Modi and his alliance poised for a third term in power. The iShares MSCI Mexico ETF (EWW) fell nearly 9% after Claudia Sheinbaum became the first woman ever elected president. Cava – The stock fell about 5% after JPMorgan was downgraded to neutral due to overweight. The bank said shares of the Mediterranean fast food restaurant chain rose in price. Nvidia and AMD shares more than doubled in 2024. AMD shares fell about 3% after the announcement of new artificial intelligence chips. Fellow chipmaker Nvidia, whose shares rose 3%, also unveiled on Sunday a new generation of artificial intelligence chips that will replace Blackwell’s previous product released in March. Bank of America maintained its price target on Nvidia after calling it a favorite on Monday, implying about 36% upside for the stock. Structure Therapeutics — Shares of the biotech company soared 60% after positive mid-stage clinical trial results showed its experimental anti-obesity drug helped patients lose about 6% of their starting weight after 12 weeks of treatment. Autodesk — Shares of the software company rose 5% after saying it would not restate financial results following an investigation into its accounting practices. Krispy Kreme — The company’s shares rose 2% after JPMorgan gave it an “outperform” rating. The firm believes that increased accessibility will allow the company to more fully participate in the global entertainment market. McDonald’s and Krispy Kreme previously announced in March that they were expanding their partnership to all of the burger chain’s U.S. locations by the end of 2026. . Piper Sandler said investors have a better chance of making money on stocks where they are currently trading. MongoDB – The data platform for developers traded 1% higher after Guggenheim upgraded its status from sell to neutral. Guggenheim’s call came after the company last week offered investors weak guidance for the current quarter and full year. First Solar shares rose 1% after Goldman Sachs confirmed the solar solutions company was being acquired. Goldman said there are several reasons to remain optimistic about the stock’s performance, even after the recent rally. —Reporting by CNBC’s Sean Colon, Yun Lee, Pia Singh, Michelle Fox and Christina Cheddar-Burke.