So one of my wonkier habits is scrolling through the lengthy SEC filings of major public companies in the book industry, exacerbated by recent annual reports from Barnes & Noble, Borders, and Books-a-Million. (The detailed filings often share interesting tidbits we don’t get to in the basic earnings releases and ensuing conference calls.) Among the things we’ve learned in the past couple of weeks: Borders sold just over $2 billion worth of books last, out of total revenue of $3.242 billion, or a little under 62 percent of sales. Books-a-Million, on the other hand, says that 83 percent of their […]