Recent paper (with Chicago author) claims to obtain "consolidated parent level tax returns" from the IRS to study firms.
Problem? This data doesn't exist.
The IRS doesn't track/identify "consolidated parents". Instead - but not surprisingly - it tracks tax returns, which have nothing to do with parent firms. Consolidated parent-level tax returns are actually illegal in most cases. If you look at the data, the paper uses the returns of all (or more than all, Hunton style) filers, with no attempt to identify parents.
(curious how the apologists here will defend these "young scholars")