Although we don't believe in timing the market or panicking over market movements, we do like to keep an eye on big changes -- just in case they're material to our investing thesis.

What: Shares of ACCO Brands Corporation (NYSE:ACCO) jumped as much as 11% in early trading after the company reported earnings.

So what: Fourth-quarter net sales were down 5%, to $503.7 million, and income from continuing operations was $50.3 million, or $0.43 per share. That was $0.01 ahead of expectations, and showed a continued slow deterioration of the company's operations. 

Now what: Guidance was mixed, but gave a few investors reason to buy today. Management said sales would be down mid-single digits next year, and earnings would be between $0.70 and $0.76, both adjusted down for currency effects. Those numbers aren't enough for me to get excited today, and the exuberance wore off shares as the day went on, as well.

This article represents the opinion of the writer, who may disagree with the “official” recommendation position of a Motley Fool premium advisory service. We’re motley! Questioning an investing thesis -- even one of our own -- helps us all think critically about investing and make decisions that help us become smarter, happier, and richer.