book bias
 n.— «The case against former El Paso natural gas trader Todd Geiger, who pleaded guilty last year, includes e-mails in which his colleagues discuss whether to report only real trades or include “book bias”—trader parlance for bogus internal deals that made volumes look bigger than they were.» —“Trading investigation should pursue bigger fish” by Loren Steffy Houston Chronicle (Texas) Dec. 2, 2004. (source: Double-Tongued Dictionary)