美国物流量指数继续同比下跌。物流是不是先行指数？严格的说，物流量变化的先行意义来自于更细的分类，比如预示一些前瞻变化的物品物流，更加具备先行指标含义，而日用品的物流，似乎是同步指标。对这个指标，我还需要做更多的研究，才能确认它是不是一个优秀的先行指标。

Data within the Index includes all domestic freight modes and is derived from $28 billion in freight transactions processed by Cass annually on behalf of its client base of hundreds of large shippers. These comp