Earthlink is a dog of a stock. It has gone from almost $12 two years ago to $7.15  And that is after a small run-up over the last few weeks. Some on Wall St. are betting that the rally will fizzle. Short interest in the stock for the month of December rose 4.3 million shares to 17.2 million.

Earthlink is trying to change itself from an ISP to a provider of WiFi for cities. Earthlink has even set up a partnership with Google to build out WiFi in San Francisco.

As it tries to morph into a new business, Earthlink’s financial results have been poor. Some in the market think that will continue.

Douglas A. McIntyre can be reached at douglasamcintyre@247wallst.com. He does not own securities in companies that he writes about.