Boeing shares posted their largest quarterly gain in 40 years after executives laid out a plan to turnaround the company, following four years of turmoil that have cemented Airbus’s lead as the world’s biggest plane maker.
Boeing’s shares soared 57 per cent during the final three months of the year, adding $42 billion to its market value, according to data compiled by Bloomberg. That gives Boeing a market capitalisation of $113 billion, about $19 billion more than Airbus.
But Airbus…