Net units closed in 2011: 26
Still one of the 20 largest fast-food chains at year-end, Dairy Queen did a little trimming of the store-count last year. But it's owned by Warren Buffet's Berkshire Hathaway -- so don't count this chain out. The introduction of the Mini-Blizzard (pictured above) is a boon to dieters, but its lower price may be contributing to the company's dismal average per-unit sales of just $545,000. By contrast, a typical unit of powerhouse McDonald's rakes in $2.5 million.
(Photo: Business Wire) More From Forbes
: 25 Big Companies Betting On America 10 Horrific Business Mistakes The Big Fast-Food Chains That Are Closing Restaurants The opinions expressed are solely those of the author and do not necessarily reflect the views of Comcast.