We develop a valuation model for venture capital-backed companies and apply it to 135 U.S. unicorns – private companies … unicorn post-money valuation average 50% above fair value, with 15 being more than 100% above. Reported valuations assume all …% overvalued. After adjusting for these valuation-inflating terms, almost one-half (65 out of 135) of unicorns lose their unicorn …