CHEVRON CORP. $102 (New York symbol CVX; Conservative Growth Portfolio, Resources sector; Shares outstanding: 2.0 billion; Market cap: $204.0 billion; Price-to-sales ratio: 1.0; Dividend yield: 2.8%; TSINetwork Rating: Above Average; www.chevron.com) began exploring for oil in Libya in 2005, after the U.S. dropped its economic sanctions on the country. However, its discoveries were too small to justify further investments. As a result, Chevron let its five-year exploration licenses expire last year. Chevron is a buy.