Apple’s unrivalled growth has hit new levels, with the iPhone maker now more than twice as large as the world’s second biggest company, Exxon Mobil. With September’s iPhone 6 release having prompted record-breaking iPhone sales towards the end of 2014, Apple’s share prices have jumped to stratospheric new heights in recent weeks. Despite Apple’s share prices having already risen 21.7 per cent this year alone, the company’s big new product is still yet to hit retailers.