Cigna Group’s CI Evernorth Health Services announced on Tuesday a $3.5 billion investment in Shields Health Solutions, a specialty pharmacy management company.How is CI stock doing now? Check the full analysis here.Evernorth’s investment coincided with Shields’ establishment as a private, stand-alone company upon its acquisition by Sycamore Partners, a private equity firm.This followed Sycamore’s acquisition of Walgreens Boots Alliance, Shields’ previous owner.Evernorth’s investment in Shields was in the fo ...