The healthcare sector, as measured by the XLV ETF, is down -1.88% in pre-market trading. The primary driver appears to be broad market anxiety stemming from escalating geopolitical tensions between the U.S. and Iran. While there is no major sector-specific news to account for the underperformance, the general risk-off sentiment in the futures market is likely weighing on sectors that have recently performed well. The decline is happening despite some positive broader market signals like cooling inflation data.