Forbes magazine ranks sports teams by valuation -- determined by a number of factors -- generally, when their sport is in midseason.
↵↵In their latest issue, they rank NBA teams. The Bulls rank third in their latest ranking, trailing only the Knicks and Lakers. Clearly, market size has a lot to do with those rankings, although the Knicks have also been better on the court this season.
↵↵The Bulls' overall valuation is $511 million, on $169 million of revenue. The total ranking is unchanged from last year. They rank quite a distance behind the Lakers, at $643 million, and also far ahead of the Celtics, who rank fourth at $452 million.
↵↵The bottom ranks are taken up by the Pacers, Grizzlies, Timberwolves and Bucks, who rank last at $258 million. 17 of the 30 teams in the ranking are shown with negative operating income, which does not bode well for next year's NBA season; a threatened lockout may come to pass.
↵↵You can find the entire chart of all 30 NBA teams here.