Movers roundup: Diamond Foods, AVG Technologies

Movers roundup: Diamond Foods shares fall on results; AVG shares fall on downgrade

Among the stock activity stories for Tuesday, March 12, from AP Business News:

— Shares of Diamond Foods Inc. fell as the snack food maker reported disappointing second-quarter sales, and offered an estimate for the rest of the fiscal year that also fell short of Wall Street estimates.

— Shares of AVG Technologies N.V. fell after Morgan Stanley analysts downgraded the software company's stock because its CEO is leaving as the company works on growing a newer business.