The healthcare sector is showing significant strength in the pre-market session, with its proxy XLV up 2.94%. The primary driver is a wave of positive second-quarter earnings announcements from several major companies within the sector. GE HealthCare reported preliminary results on July 24 showing a 5.7% revenue increase and better-than-expected EPS, which was reaffirmed today. Additionally, pharmaceutical company GSK posted Q2 results that beat analyst expectations. Other major components like Humana and Boston Scientific also reported earnings this morning, contributing to the broad positive sentiment.