Bloomberg Chinese conglomerate HNA Group Co. agreed to buy a 25 percent stake in Old Mutual Plc’s U.S. asset management unit for about $446 million, adding to a $30 billion spending spree since last year. Old Mutual is selling down its holdings in OM Asset Management to HNA Group in two tranches, according to an emailed statement on Sunday …

  Bloomberg California’s environmental regulator broke with the Trump administration by maintaining its cleaner- car standards through 2025 and launching a formal effort to write even tougher rules for the following five years. The California Air Resources Board voted unanimously to maintain the state’s 2025 limits on tailpipe greenhouse gas emissions and begin drafting stricter goals for zero-emission vehicle sales …

  Bloomberg Uber Technologies Inc. is suspending its self-driving car program after one of its autonomous vehicles was involved in a high-impact crash in Tempe, Arizona, the latest incident for a company reeling from multiple crises. In a photo posted on Twitter, one of Uber’s Volvo self-driving SUVs is pictured on its side next to another car with dents and …