1. In being named CEO, Mary Barra broke through several historical barriers in moving from GM's third-most powerful executive position to its first. Her job was made both easier by the appointment of a non-executive chairman to handle the board of directors, and more difficult by the decision to give her old job to one of her rivals. As the first product engineer to head the company in two decades, she will be deluged with suggestions about everything from air conditioning vents in new pickups to the future of brands like Buick and Chevrolet.
3. Snap, however, has sunk to about $15 after initially rallying from its IPO price of $17 in March, damping some expectation of further activity involving so-called decacorns, tech companies that have achieved valuations of $10bn or more through private funding.
西西软件园 In early December, authorities announced that market circuit breakers would be introduced become effective from January 1 in an effort to limit the volatility seen during the savage, summer sell-off from June. The circuit breakers would see trading in shares, options and futures halted for 15 minutes if they fell by more than 5 per cent. On their first day of use, that first threshold was breached just after the return from the lunchbreak, prompting a 15-minute halt.