Shares of Boise Cascade Co. (BCC) tumbled 10.9% toward and eight-month low, and of Louisiana-Pacific Corp. (LPX) 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 Boise's stock to $71 from $95 and on Louisiana-Pacific to $67 from $90.  The downgrades come after BofA Securities recently cut its 2023 estimate for U ...