Mark Cuban passed on Uber when it was worth $10 million or less. He missed out on billions of dollars in profits.

• Mark Cuban says he turned down the chance to invest in Uber at a $10 million valuation.
• Uber's market value has surged by over 9,000-fold since then to north of $90 billion.
• Cuban could have paid $250,000 for an Uber stake worth $2.3 billion today, all else being equal.

Mark Cuban turned down the chance to invest in Uber at a valuation of no more than $10 million — just over 0.01% of the ride-hailing company's $91 billion market capitalization today.