Assign a sentiment category to this news related to finance.
Options: negative, positive

Amazon.com Inc (NASDAQ:AMZN), CVS Health Corp, Option Care Health Inc, and UnitedHealth Group Inc are all understood to be bidding for Signify Health Inc, according to weekend news reports cited by Reuters. UnitedHealth has submitted the highest bid in excess of $30 a share, while Amazon's offer is close behind, Reuters said.
positive