Gilead Sciences (GILD) closed at $63.56 in the latest trading session, marking a -1.21% move from the prior day. The stock trailed the S&P 500, which registered a daily gain of 0.23%. Elsewhere, the Dow saw a downswing of 0.17%, while the tech-heavy Nasdaq appreciated by 0.34%.The HIV and hepatitis C drugmaker's stock has dropped by 3.98% in the past month, falling short of the Medical sector's gain of 2.69% and the S&P 500's gain of 3.96%.Analysts and investors alike will be keeping a close eye on the perf ...