Stocker and feeder prices were on fire in August, increasing to set new highs for 2013 in all four categories, according to Drovers/CattleNetwork’s 50-market auction summary. Escalating prices were led by steer and heifer calves which both improved by double-digit numbers. Steer calves weighing 400 to 500 pounds posted an average gain of $20.50 for the month at $176.51 per hundredweight. Yearling steers weighing 600 to 700 pounds averaged $150.58, up $8.90 per hundredweight. Heifer calves sold for an average of $155.52 per hundredweight, a gain of $13.19. Yearling heifers averaged $134.22, up $8.30.