Railroad stocks fall, help drag Dow transports down in an up market Shares of railroad operators fell Wednesday, helping drag the Dow Jones Transportation Average down by 1.3% in midday trading despite a 39-point gain in the Dow Jones Industrial Average and 0.3% rise in the SP 500 , amid concerns over a possible labor strike. Shares of Union Pacific Corp. shed 4.8%, Norfolk Southern Corp. dropped 2.8% and CSX Corp. slumped 2.6%. The combined price declines of those stocks shaved about 112 points off the Dow transports'' price, while the Dow transports fell 174 points. Market Pulse Stories are Rapid-fire, short news bursts on stocks and markets as they move. Visit MarketWatch.com for more information on this news.