Falling lumber prices are increasingly drawing attention on Wall Street as a potential signal of weakness spreading toward Main Street. Wood markets have been highly volatile in recent months, shaped by ongoing trade uncertainty and a weakening housing sector. Lumber futures have dropped 24% since reaching a three-year peak in early August, closing Monday at $526.50 per thousand board feet. The decline could have been steeper, but two of North America’s largest producers recently announced output reductions, helping to slow the downward momentum. Historically, sharp moves in lumber prices have served as a leading indicator ...