THE NEWS: Barnes & Noble’s fiscal fourth-quarter loss narrowed but was still larger than Wall Street expected as the company invests in its Nook e-reader business and revenue remains flat.

THE CONTEXT: The company has invested heavily in its Nook e-reader business and broke out sales for the first time. Nook sales fell 11 percent to $164 million. That’s still just a small part of Barnes & Noble’s overall revenue of $1.38 billion.