According to InvestorWords.com, talking your book is an investing expression which means arguing for a scenario that, if true, would end up making you money because it follows your investing strategy.
In other words, when investment professionals publicly express their views regarding an investment opportunity, in which they hold a position, they are “talking their book”. These opinions are typically presented without expressly stating that the speaker has a position, either long or short, and stands to profit if the stock price moves in the recommended direction.
All comments and suggestions are welcome.
Walter J. Kirchberger, CFA