Stater Bros. became a publicly held company.

The Colton, Calif.-based operator of 94 supermarkets in Southern California made an initial public offering of 1 million shares of common stock at $10 a share on the over-the-counter market and $30 million of 14.25% subordinated notes. The common shares make up about 25% of the outstanding stock. Jack H. Brown, president and chief executive, said the proceeds will be used in part to open new stores and update existing ones, he said.