NEW YORK (AP) â¿¿ Stocks that moved substantially or traded heavily Monday on the New York Stock Exchange and Nasdaq Stock Market: NYSE Caterpillar Inc., up $4.38 at $91.77 Stronger demand for its construction and mining equipment helped the company report double-digit growth in its third-quarter earnings. HealthSpring Inc., up $13.55 at $53.71 Health insurer Cigna Corp. is buying rival HealthSpring in a $3.8 billion deal, helping it boost its Medicare Advantage business. Peabody Energy Corp., up $2.05 at $40.94 The coal company and steelmaker ArcelorMittal acquired a controlling interest in pulverized coal producer Macarthur Coal. Arrow Electronics Inc., up $1.29 at $33.87 The electronics and computer components supplier said that it is planning to repurchase up to $150 million of its stock. Nasdaq Rightnow Technologies Inc., up $6.98 at $42.94 Software company Oracle will buy the tech service provider for $1.5 billion to help businesses better manage their customer service. Crocs Inc., up $1.76 at $17.01 A Sterne Agee analyst reiterated his "Buy" rating on the footwear maker's stock, saying there's still demand for its new styles. Exelixis Inc., up $1.45 at $7.44 A trial of the biotechnology company's experimental drug found that it increased survival time of patients with thyroid cancer. Affymax Inc., up 17 cents at $5.28 The biotech drugmaker said that the Food and Drug Administration has scheduled a meeting to review its experimental anemia drug.