Investors Get a Taste of Deli Stock: Investors were hungry enough to bid up the stock price of Jerry's Famous Deli Inc. on its first day of trading. The Studio City-based restaurant company opened at $7 a share, above its offering price of $6, and closed at $7.50 on Nasdaq. Isaac Starkman, chief executive of Jerry's, and his wife, Carolyn, took in about $2.8 million from sales of their own stock through the offering. But the Starkmans and their sons, Guy and Jason, still own 68% of the company, at a paper value of about $52 million. Jerry's should net about $9 million from the stock offering, said Robert A. DiMinico, chairman of the Boston Group, the Century City underwriter that handled the sale. After paying down some debt, the Starkmans plan to use the cash to open three or four more restaurants, including one in Pasadena and one in Westwood.