Definition A private company becomes a public company in a process called an initial public offering (IPO). Historically, only private companies with a strong track record of years of growth have considered themselves ready to take this significant step. The IPO has pros and cons that include exchanging a host of high regulatory costs for the benefits of significant capital. After a company “IPOs” or “goes public,” investors and the general public can buy stock, and existing shareholders can sell their stock far more easily than when the company was private.
Companies take years to IPO after being formed. The median time between a company’s founding and its IPO has been increasing. According to a Harvard report, companies that went public in 2016 took 7.7 years to do so, compared to 3.1 years for companies that went public in 1996.*
danger With private companies, it can be very hard to know the value of equity. Because the value of private company stock is not determined by regular trades on public markets, shareholders can only make educated guesses about the likely future value, at a time when they will be able to sell stock.
After all, private company stock is simply a legal agreement that entitles you to something of highly uncertain value, and could well be worthless in the future, or highly valuable, depending on the fate of the company.
confusion We’ll discuss the notion of a company officially assigning a fair market value later, but even if a company gives you a value for your stock for tax and accounting purposes, it doesn’t mean you can expect to sell it for that value!