 Two Cathie Wood funds, including her flagship ARK Innovation ETF ARKK, -2.42 , sold stock in Signify Health SGFY, 32.08 after the 32 surge on the back of a report its the target of a bidding war between Amazon AMZN, -3.62 , CVS Health CVS, -1.64 and UnitedHealth UNH, -0.68 . The ARK Innovation fund sold 31 million worth of Signify, and the ARK Genomic Revolution ETF sold 18 million. 