The healthcare sector is trading lower, continuing a sell-off from the previous session sparked by a warning from HCA Healthcare, a major hospital operator. On July 14, HCA lowered its full-year profit forecast, citing unfavorable shifts in patient insurance coverage and weaker surgical volumes. This news has created sector-wide concern, particularly impacting medical device makers who face reduced demand due to fewer surgical procedures. The negative sentiment from HCA's announcement is the primary driver of the pre-market weakness.