Stock of unlisted companies can become listed themselves, almost always resulting in an increase in the stock's price. Below are some of the companies from the 2002-2003 edition of Walker's Manual of Unlisted Stocks that are now listed on a major exchange or on the NASDAQ:

Calcasieu Real Estate & Oil Co., Inc.	MACC Private Equities Inc.
Enstar Group, Inc. (The)	Mexco Energy Corporation
Global Outdoors, Inc.	Reinhold Industries, Inc.
Imperial Sugar Company	Thai Capital Fund, Inc. (The)
Life Partners Holdings, Inc.