When Quintiles Transnational ( QTRN) announced it would go private in April, its shares jumped 14%. But don't worry if you missed out on the rally -- experts say there are ways to identify other companies that could be privatized, resulting in a potentially big payday. In the case of Quintiles, investors realized that management would pay a big premium over the current share price in taking the drug-research firm private. "Usually management or a private equity firm is going to buy if they feel the stock is undervalued," said Alan Annex, a partner at law firm Greenberg Traurig. "They obviously have to pay a fair price, but typically that is going to be a price that is in excess of the market." Indeed, Varsity Brands and Sports Club announced plans to go private recently that offered investors a substantial premium over the current stock price, and the shares reacted favorably. Shares of Dole Foods also jumped sharply after the company said it would go private. So how can you tell if a firm is likely to exit the public domain? Walter Zweifler, chief executive of Zweifler Financial Research, said he looks for companies whose net liquid assets exceed the value of their market capitalizations by $500,000 or more. When that happens, he said, corporate raiders start to take an interest in the company and management teams, then rush to protect themselves by buying out their own stock. He pointed out that Titan Pharmaceuticals ( TTP), Cortech ( CRTQ) and American Claims Evaluation ( AMCE) -- all of which trade for under $3 a share -- might be good candidates to go private.