In this video, as part of The Motley Fool's "Ask a Fool" series, health-care analyst David Williamson takes a question from a Fool reader, who asks:
Gilead Sciences (GILD 2.36%) seems to be on a down trend. Is there any specific reason, or should I just hold firm?
David Williamson owns shares of AbbVie. Follow David on Twitter: @MotleyDavid.
The Motley Fool recommends Gilead Sciences. We Fools don't all hold the same opinions, but we all believe that considering a diverse range of insights makes us better investors. The Motley Fool has a disclosure policy.