Lumber futures on Chicago Mercantile Exchange posted their largest-ever weekly loss, extending a multi-week decline as sawmill output increases and buyers hold off on purchases, according to Bloomberg. On Friday, lumber futures fell 5.61% to $1,059.20 per thousand board feet. For the week, prices plunged 18%, the most significant decline since 1986, one year before the 1987 stock market crash.Lumber prices have crashed 40% from the record high in May of around $1,711.Lumber prices have catapulted into the stratosphere in the last year, hitting renovators, home builders, buyers, and anyone else extremely hard. The National Association of Home Builders (NAHB)...