Brian Hamilton, CEO of Sageworks, analyzed the data Sageworks collects on private companies and their profitability.

FORBES: Why Unemployment Lags Behind GDP Growth

Brian Hamilton is the co-founder and chief executive officer of Sageworks and a noted expert on privately held companies.

FORBES: Private Companies Are Too Smart To Hire

Sageworks CEO Brian Hamilton has said that while the recovery in the U.S. economy has been uneven, some industries are boosting sales.

FORBES: Buffett's IBM buy highlights tech companies' gains