Gilead Sciences (GILD) Stock Gains 20% YTD: What Lies Ahead? Posted byZacks Equity Research November 26, 2021 Leave a comment on Gilead Sciences (GILD) Stock Gains 20% YTD: What Lies Ahead? Gilead’s (GILD) performance in the year has been pretty good on contribution from Veklury. The company is now focusing on its oncology business as the virology business faces challenges.