Actually it's a bit after the fact, as is the case with most economic data. Still, the Chicago Fed's National Activity Index posts a strong improvement (although still negative) in the month of November.
Some might think be tempted to combine this with the opinion piece by Blinder I highlighted recently. And while I think the data might contribute to the foundation, it is "old data". I'd make sure there are other reinforcing arguments. But still, it's a "ray of light", another "green shoot" reflecting actual activity.