 According to current portfolio statistics, a Premium feature of GuruFocus, the top five health care positions in Andreas Halvorsen Trades, Portfolios equity portfolio as of the third quarter are Adaptive Biotechnologies Corp. NASDAQ:ADPT, Centene Corp. NYSE:CNC, BridgeBio Pharma Inc. NASDAQ:BBIO, Boston Scientific Corp. NYSE:BSX and Thermo Fisher Scientific Inc. NYSE:TMO. This week, Halvorsen revealed a slight reduction to his Adaptive Biotechnologies position according to GuruFocus Real-Time Picks, which is also a Premium feature. 