This article examines late trade reporting on the Nasdaq National Mark
et System. A substantial number of trades are reported out-of-sequence
on both absolute levels and relative to the combined centralized exch
anges. We find minimal support for NASD permitted reasons for the late
trade reporting. Evidence suggests that market makers could use late
trade reporting to manage the release of information. This evidence is
consistent with the hypothesis that the delayed reporting of trades i
s neither a random occurrence nor fully explainable by factors outside
the market maker's control. (C) 1998 Elsevier Science S.A. All rights
reserved.