Shares of Signify Health Inc. SGFY, -2.44% rose 37% in premarket trade Monday, after the Wall Street Journal said that Amazon.com Inc. AMZN, -2.86% is among the bidders for the the home-health services provider. Signify is for sale in an auction that could value it at more than $8 billion, the paper reported, citing people familiar with the matter. Bids are due around Labor Day, according to the people, but it is always possible an eager bidder could strike a deal before then. Other interested parties include CVS Health Corp. CVS, +0.40%, UnitedHealth Group Inc. UNH, +0.57% and one other unnamed corporate buyer. Signify shares have gained 49% in the year to date, while the S&P 500 SPX, -1.29% has fallen 11%.
