Unicorn

A unicorn is a privately held startup valued at one billion dollars or more. The venture capitalist Aileen Lee coined the term to describe how rare such companies were at the time, when only a handful existed. That rarity has faded. Hundreds of companies now carry the label, and related terms followed: a decacorn passes ten billion dollars, and a hectocorn reaches one hundred billion. The valuation comes from the price of the most recent funding round, not from a public market or an audit, so it reflects what one investor paid for a slice of preferred stock with liquidation protections attached. That is why a paper valuation can hold steady while the business struggles, and why down rounds and secondary sales tell a fuller story. AI has produced some of the fastest-forming unicorns on record, with companies reaching the mark within a year or two of founding on the strength of model capability and hiring. The pitfall is treating unicorn status as proof of a healthy business. It measures investor expectation, not revenue, profitability, or whether the company can eventually exit through an IPO or acquisition.