When a company "goes public" with an IPO, it usually doesn't sell all of itself. For example, imagine the Bergen Bell Co. (ticker: RINGG), owned entirely by a woman named Adrienne. Adrienne decides to sell about 10% of the company to the public, via an IPO, to raise money for expansion. Adrienne, who currently owns all of the 90 million shares of the company, will sell 10 million new shares, so there will be 100 million shares after the offering.
Investment bankers help Adrienne determine the value of the company and how much of it she should sell, based on how much money she wants to raise. Let's say they decide to price the offering at $20 per share. This means that Adrienne's company will collect about $200 million when the shares are sold (less the investment bank's fee of roughly 7%). Adrienne will retain ownership of 90% of the firm, or 90 million shares.
This is often how the world's wealthiest become millionaires. Like Adrienne, most of their "wealth" is on paper and is tied to the number of shares they hold in their companies, multiplied by the current share price.
Search specialist Google's IPO won't be a typical one. Instead, it will feature a Dutch auction process, like that used by Overstock.com
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