“Talking its book”

Entry in progress—B.P.
 
New York (NY) Post
Small firms claim Finra targets them
By John Crudele
Posted: 12:59 AM, May 26, 2011
(...)
Goldman Sachs, for instance, just a few days ago repeated a forecast made earlier this year that oil prices would soon climb rapidly. Between its two higher oil forecasts was one by Goldman predicting falling prices, suggesting the firm is doing nothing more than—as they say on Wall Street—“talking its book.”
 
Talking its book means a firm made a prediction that helps it make money on the securities or commodities positions it already holds in its portfolio.