John Nottingham and John Spirk are the most successful inventors you've never heard of, with a can't-lose business model that would make Edison blush
Michael Steinhardt forged the model for making hedge fund billions before exiting the game. With WisdomTree, he's back to upend Wall Street again—this time, with the little-guy investor at his side
Medidata Solutions believes software can revolutionise the way Big Pharma develops new medicines. It has Oracle in its sights
Endgame wants to rewrite its reputation as a cyberwar arms dealer—without apologies
Decades before the boutique beer boom Ken Grossman tasted opportunity. Sierra Nevada is now a juggernaut—and he might be worth $800 million
PayPal is in the centre of two battles: One for control of every transaction on the Planet, the other for control of its own destiny
Duolingo teaches English to millions for free, as the non-profit Khan Academy does with math. But its founders want to make real money so the service lasts
Cash crises, political grudge matches, suicide. None of it stopped David Walentas from forging a 10-digit fortune by creating an entire neighbourhood in New York's underdog borough. And he's about to do it all again
We've seen time and again that it can't. But that isn't stopping Big Data pioneer Vivek Ranadivé from using the NBA to bet $1 billion on Sacramento
Forget wearable computers and self-driving cars. The search giant will continue its dominance by sticking with its roots—taking $20 billion out of the hides of some very familiar companies
Backed with $26 million, a startup is using hackers' own tricks against them