Gilead has had a very good run and I think it's just folks capturing some profits. This market keeps going higher on relatively low volume. The experts say that's because the big boys are not churning like they used to but holding for longer periods. That may be true but I think many folks are thinking this market is overdue for a correction, at least 5% and maybe more. That would be healthy and some people want cash on hand when that occurs. If it doesn't happen soon, I suspect the old adage, "Sell in May and go away." will hold true.
Going by RSI, the DOW hit overbought range earlier this week. The last time that happened was early February, and then the DOW traded sideways for about three weeks. I expect that as a minimum going forward for a few weeks.