The parent company of OnlyFans , the porn-friendly creator site that rakes in billions of dollars in annual revenue, has sold a 16% stake to Architect Capital for $535 million. The deal announced by U.K.-based Fenix International Ltd., owner and operator of OnlyFans, gives the company a $3.15 billion valuation. The sale of the minority stake to Architect Capital comes after the death of OnlyFans owner Leonid “Leo” Radvinsky last month . His widow, Yekaterina “Katie” Chudnovsky, has assumed control over Fenix, according to a Bloomberg report. The strategic investment from Architect Capital, which says it invests in early-stage businesses, will “enable OnlyFans to enhance the services it offers to creators and fans, streamline financial processes and better serve the creator economy, while maintaining its inclusive content policy and the success of its present operations,” the company said.…