Spotify’s success with its year-end review known as Wrapped, designed for social sharing, may be pushing the company toward building more social experiences directly into its mobile app. The company for many months has been testing different iterations of a “friends activity” tab on its mobile app, and investors have now taken notice. During the streamer’s Q4 earnings call earlier today, the company was asked to clarify some details about its social plans. Though Spotify CEO Daniel Ek declined to comment on the specific feature the investor asked about, he didn’t shoot down the idea of Spotify becoming a more social platform. Instead, he replied that social could become “a meaningful driver of creating an even stickier and ...