Updated from 11:32 a.m. Shares of Main Street Banks ( MSBK) were among the Nasdaq's losers Monday, falling 7.5% after the company lowered its 2005 earnings guidance. The financial services company expects first-quarter earnings of 36 cents to 38 cents a share, hurt by the demolition and reconstruction of one of its banking centers in Georgia. Analysts polled by Thomson First Call had been expecting earnings of 42 cents a share. Looking ahead, Main Street lowered its 2005 growth rate to between 5% and 8%. Flat net interest margin, investment in internal growth, a higher tax rate and the early adoption of FAS 123R, which relates to the expensing of stock options, contributed to the lowered outlook. During 2006, the company said it expects to return to its previous earnings growth target of 12% to 15%. Shares traded down $2.44 to $29.99. Marvel Enterprises ( MVL) fell 2.4% Monday, despite the entertainment licensing company posting fourth-quarter earnings that beat expectations. Excluding a one-time tax credit, the company earned 21 cents a share on sales of $100.5 million. Analysts were expecting earnings of 16 cents a share on sales of $86.8 million. Looking ahead, Marvel forecast first-quarter earnings of 25 cents to 29 cents a share on sales of $88 million to $98 million. Analysts are expecting earnings of 26 cents a share on sales of $95.7 million. Shares traded down 45 cents to $18. Shares of Aquila ( ILA) fell 1.7% after the operator of electricity and natural gas utilities posted fourth-quarter results. The company posted a loss of $81 million, or 21 cents a share, on sales of $500.1 million. Aquila said that fourth-quarter results were hurt by unfavorable weather for its natural gas utilities and by continued cost pressures for fuel and purchased power in the company's Missouri electric operations. Aquila also said that results included $55.9 million in losses from the termination of a fourth long-term gas supply contract, a $10.6 million impairment on gas turbines and an $8.9 million impairment related to its Red Lake gas storage development project. Shares traded down 7 cents to $4.05.