Shares of San Diego-based Cidara Therapeutics Inc. (NASDAQ:CDTX) enjoyed a skyward ride, closing Tuesday at $2.35, up 67 cents, or 40%, on word of a deal with Mundipharma International Ltd., of Cambridge, U.K., to develop and commercialize rezafungin for invasive fungal infections. "Historically, [antifungal] pricing has been much stronger in the EU, so that is an important opportunity for us and now for Mundipharma as well," Cidara CEO Jeffrey Stein said.