They are Unusual Companies, built by Unusual Billionaires. This book tells the story of these seven companies, handpicked out of 5000 listed on the stock exchange. Built by visionary business leaders, they have delivered outstanding results for a decade and more. Saurabh Mukherjea tells you why focusing on the core business is central to corporate success and how a promoter They are Unusual Companies, built by Unusual Billionaires. This book tells the story of these seven companies, handpicked out of 5000 listed on the stock exchange. Built by visionary business leaders, they have delivered outstanding results for a decade and more. Saurabh Mukherjea tells you why focusing on the core business is central to corporate success and how a promoter giving up control to the top management could be a boon. He also explains how investors can generate market-beating investment returns from identifying companies such as these using a simple set of metrics.