Quality Systems Inc.'s stock tumbled 29% Tuesday, one of the largest losses in U.S. markets, a day after the Santa Ana developer of health-care information systems said it expects to report disappointing financial results for the fiscal first quarter ended June 30.
Quality's shares fell $2.56 to $6.38 on the Nasdaq market. The percentage drop was the seventh-largest in U.S. markets. Nearly 315,000 shares were traded, up from an average daily volume of 39,146 shares over the last three months.
