 Shares of Boise Cascade Co. BCC, -10.90 tumbled 10.9 toward and eight-month low, and of Louisiana-Pacific Corp. LPX, -5.01 slid 4.9 toward a 15-month low, after BofA Securities downgraded the wood products makers to neutral from buy, citing a more bearish view on new home demand and has wood prices have dropped sharply. Analysts George Staphos and John Babcock also cut their price targets on Boises stock to 71 from 95 and on Louisiana-Pacific to 67 from 90. 