Stocks that moved substantially or traded heavily Wednesday: UnitedHealth Group Inc., up $11.09 to $274.63 Health insurers climbed after Democrats won control of the House of Representatives, which likely safeguards the Affordable Care Act. Molina Healthcare Inc., up $13.09 to $137.32 Medicaid companies rose after three states voted to expand the health care program. Anadarko Petroleum Corp., up $3.12 to $57.89 Voters in Colorado rejected a ballot measure that could have reduced oil and gas drilling. Tilray Inc., up $32.74 to $139.60 Voters in several states approved the legalization of recreational or medical marijuana.