In 2000, Viacom bought Chris-Craft's 50% ownership interest in UPN (which Chris-Craft had wholly owned, until Viacom acquired a stake in the network in 1996), stripping KBHK's status as an O&O. On August 12 of that year, Chris-Craft sold its UPN stations to the Fox Television Stations subsidiary of News Corporation for $5.5 billion; the deal that was finalized on July 31, 2001. Fox subsequently traded KBHK-TV to Viacom in exchange for KTXH in Houston and WDCA in Washington, D.C., thus returning KBHK's status as an O&O. Viacom had purchased CBS a year earlier, resulting in the creation of a duopoly between KBHK and CBS O&O KPIX.