Check out the companies making the biggest moves midday: Warner Bros. Discovery — Shares jumped 7% after Warner said it will split into two publicly traded companies by next year. One company will host WBD’s streaming services and movie properties, while the other will include its cable networks such as CNN and TNT Sports. Universal Health Services — The hospital operator fell more than 6% after Chief Financial Officer Steve Filton said at a conference that procedural volumes “have been slower to recover back to historical levels than we might have imagined.” He also raised concerns over how President Donald Trump’s spending bill could evolve as it goes through the Senate, and what that would mean for the hospital industry, according to a FactSet transcript. Topgolf Callaway Brands — The golf equipment stock rallied 8% following director Adebayo Ogunlesi’s disclosure on Friday that he had bought 383,700 shares. Following the transaction, Ogunlesi owns 512,600 shares. Quaker Chemical — The metal processing fluid company, which does business as Quaker Houghton, jumped 10%. On Monday, Jefferies upgraded the stock to buy from hold, seeing more than 33% upside on the back of improving steel demand conditions and increasing infrastructure spending. EchoStar — Shares tumbled 6% after The Wall Street Journal, citing people familiar, reported the telecommunications company is considering filing for bankruptcy under Chapter 11 . The company is trying to protect its wireless spectrum licenses that are under review by the Federal Communications Commission, the report said. Apple — Shares of the iPhone maker are up slightly ahead of the company’s closely watched Worldwide Developers Conference in Cupertino, California . Investors are eager to hear more about Apple’s progress on Apple Intelligence, its response to generative artificial intelligence models, at the meeting, which kicks off at 1 p.m. ET. Apple shares have lagged the market, with an 18% decline year to date. Robinhood , AppLovin — Shares of Robinhood and AppLovin fell 5% and 4%, respectively, after neither name was added to the S & P 500 on Friday. Both companies were considered possible candidates for inclusion in the index . Robinhood soared more than 13% last week leading up to the rebalance announcement, while AppLovin advanced more than 6%. Intuitive Surgical — The surgical product maker slid 7% on the heels of Deutsche Bank’s downgrade to sell from hold. Deutsche said the company’s competitive moat is at risk. IonQ — The quantum computing stock climbed 2% after the company announced that it has agreed to acquire Oxford Ionics in a deal valued at $1.075 billion in cash and stock. The deal is expected to close in 2025. Circle — Shares of the stablecoin issuer jumped 10%, continuing its post initial public offering surge . Circle’s stock is now nearly 300% above its $31 per share IPO price. McDonald’s — The fast-food chain’s stock slipped nearly 2% on the heels of a Morgan Stanley downgrade to equal weight from overweight. Morgan Stanley said the company hasn’t been insulated from pressures on the fast-food sector. Moelis & Co. — Shares were more than 1% lower. On Monday, The Wall Street Journal reported that CEO Ken Moelis is planning to step down from the role at the investment bank. He said in an interview that he is expected to become executive chairman, effective Oct. 1. Co-president Navid Mahmoodzadegan is slated to become CEO, the report said. Aon — Shares of the professional services company slipped 4% after Aon reaffirmed its full-year guidance during its investor day Monday. — CNBC’s Sean Conlon, Lisa Han, Alex Harring, Michelle Fox, Christina Cheddar Berk and Jesse Pound contributed reporting.