According to the ETF Finder at ETF Channel, CNC makes up 2.42% of the SPDR S&PHealth Care Services ETF (XHS) which is up by about 0.7% on the day Friday.
In afternoon trading Friday, CNC was up about 0.3% on the day.
S&P Capital IQ has identified several potential stock losers for 2017 if Obamacare is repealed, including Tenet Healthcare and HCA Holdings.
President-elect calls Tom Price and Seema Verma a health care "dream team," but analysts say hospital and health insurance stocks could be in for a shock.
Markets and investors might not like uncertainty. Here's what to consider looking ahead to the next four years.