Shares of HouseValues ( SOLD) were among the Nasdaq's losers Wednesday, tumbling 26% after the real estate marketing services company posted mixed fourth-quarter results and said first-quarter results would be below expectations. The company earned $4 million, or 15 cents a share, on sales of $25.2 million. Analysts polled by Thomson First Call expected a smaller profit of 11 cents a share, but forecast higher sales of $25.9 million. During the year-earlier quarter, the company earned $1.9 million, or 8 cents a share, on sales of $14.4 million. Looking ahead, HouseValues sees first-quarter earnings of 3 cents to 4 cents a share, including about 3 cents a share in stock-based compensation costs. The company predicts sales of $25.5 million to $26 million. Analysts project earnings of 14 cents a share, excluding stock-based compensation costs, on sales of $28.8 million. Shares were trading down $3.53 to $9.97. Pilgrim's Pride ( PPC) fell 3% after the poultry producer withdrew its prior guidance for the fiscal second quarter and full year. The company previously projected earnings of 25 cents to 35 cents a share for the second quarter and $2 to $2.50 a share for the entire year. The company said "results for the second quarter and full year are expected to be less than previously forecasted, primarily because of depressed prices for U.S. chicken-leg quarters due to the continued weakness of international demand." Analysts had forecast second-quarter earnings of 33 cents a share and full-year earnings of $2.21 a share. Shares were down 71 cents to $22.35. Shares of Joy Global ( JOYG) rose 7% after the mining equipment company posted better-than-expected first-quarter results. The company earned $59.7 million, or 48 cents a share, on sales of $553.3 million. Analysts expected earnings of 39 cents a share and sales of $517.1 million. During the year-earlier period, the company earned $22.2 million, or 18 cents a share, on sales of $373.9 million.