** Shares of health insurer Centene Corp CNC.N fall 1.8% to $38.92, while Oscar Health OSCR.N slips 3.7% to $16.11 in after-market trading
** The White House says U.S. President Donald Trump is not considering a "straight, two-year" extension of Obamacare subsidies
** Politico reported on Monday that the Trump administration was preparing a health-policy framework that would extend Affordable Care Act insurance premium subsidies for two years
** CNC stock down 34.5%, while OSCR up 24.5% YTD
(Reporting by Sriparna Roy in Bengaluru)
((Sriparna.Roy@thomsonreuters.com;))