Hard number: Apple let him Cook

Apple announced on Monday that Cook, who took over as CEO when company founder Steve Jobs died in 2011, will step down in September. Cook will leave behind an astonishing legacy, navigating supply disruptions and geopolitical turmoil to add more dollar value to a US firm than any other CEO except Jensen Huang at Nvidia. But Cook has faced criticism for failing to spark further innovation – a key challenge to be addressed by his replacement, current Senior Vice President John Ternus.