Steel stock Nucor Corp (NYSE:NUE) was last seen down 4.1% at $136.95, after the company cut its third-quarter guidance to a range of$2.05 to $2.15 per share, expecting earnings to decrease in all three of its operating segments. In response, Wells Fargo lowered its price target to$140 from $146. Though today's drop has Nucor stock falling below recent support at the 60-day moving average, a familiar floor at the$135 level -- which has been in place since early-July -- captured today's lows. Year to date, ...