The fourth-quarter earnings picture for the transportation sector has been unimpressive. This is especially true as earnings of 91.8% of the market capitalization of the sector are down 15.6% on a 0.7% revenue decline. The earnings and revenue beat ratios came in at 72.7% and 63.6%, respectively.As such, transportation ETFs have seen mixed performances over the past month. iShares U.S. Transportation ETF (IYT) and First Trust Nasdaq Transportation ETF (FTXR) have risen 3.4% and 0.9%, respectively, while SPD ...