Young Research’s Moving the Goods Index is looking toppy relative to the S&P 500. Our Moving the Goods Index is a market-cap weighted index of non-airline transportation companies. The relative performance of transportation stocks can signal economic strength or weakness. The recent stalling in the relative performance of the Moving the Goods Index warrants close attention. A break below the trend-line in my chart may signal that economic momentum is slowing. An unexpected slowdown in growth won’t sit well with stock market bulls.