Private equity firm Platinum Equity has completed its purchase of The San Diego Union-Tribune, one of the most-read dailies in California. Forty-one percent of adults in the Union-Tribune's distribution area read the Sunday paper, compared to 36% at the second-most read and 23% at the Los Angeles Times. As of September 28, 2008, the Union-Tribune had an average weekday circulation of 269,819, and a Sunday circulation of 342,384.