The healthcare sector is trading lower today, primarily influenced by disappointing earnings from Johnson & Johnson (JNJ) and broader concerns about potential drug price regulation. JNJ, a major sector component, reported a significant drop in GAAP earnings per share due to a one-time charge related to talc litigation, and its sales narrowly missed analyst expectations. This has overshadowed positive results from UnitedHealth Group (UNH). Adding to the negative sentiment is a Supreme Court hearing that questioned high markups on medicines, sparking fears of wider price controls and pressuring pharmaceutical and hospital stocks.