Bloomberg Markets with Carol Massar and Cory Johnson.\u0010\u0010GUEST:\u0010David Wilson\u0010Stocks Editor\u0010Bloomberg News\u0010Discussing his "Stock of the Day"Pegasystems (PEGA). Pegasystems Inc.'s shares rose to a record as first-quarter results from the customer-service software maker were well received. Earnings and revenue exceeded the average analyst estimates in a Bloomberg survey by the widest margins in more than four years.