Bloomberg Petroleos Mexicanos replaced the head of its trading arm PMI with Ulises Hernandez, formerly an executive of Pemex Exploration and Production, after a mass exodus by former management. Hernandez, previously the head of resources, reserves and partnerships at Pemex, will replace Raul Enrique Galicia, according to a statement. PMI’s crude trading division will also have new management, as Armando …

Bloomberg Amazon.com Inc defended the privacy features of its Alexa digital assistant — and introduced some new tools to reassure users — following months of debate about the practices of the technology giant and its largest competitors. “We care about this,” Dave Limp, leader of the company’s devices business, said at Amazon’s headquarters in Seattle. “Privacy is absolutely foundational to …

Bloomberg EHang, one of China’s largest drone makers, has made a confidential application for an initial public offering with Nasdaq Inc, according to people with knowledge of the matter. EHang plans to float 10 percent to 15 percent of its shares, with the company’s valuation not yet set due to volatile market conditions, said one of the people, who asked …