This week, the tweet of the week comes from Paul DeSantis, who questions whether Carl Icahn might get involved with Gilead Sciences (NASDAQ:GILD) considering all the cash the biotech is expected to throw off over the next few years.

In the video below, senior biotech specialist Brian Orelli and health-care bureau chief Max Macaluso discuss why Icahn might want to become an activist investor in Gilead Sciences and whether that should scare investors. Considering his track record of getting companies sold -- MedImmune to AstraZeneca (NYSE:AZN), Genzyme to Sanofi, ImClone Systems to Eli Lilly (NYSE:LLY), just to name a few -- it can be an advantage to have Icahn on your side in the short term.

In the long run, it's an entirely different story.

Speaking of long-term investing...
Warren Buffett has made billions through his investing, and he wants you to be able to invest like him. Through the years, Buffett has offered up investing tips to shareholders of Berkshire Hathaway. Now you can tap into the best of Warren Buffett's wisdom in a new special report from The Motley Fool. Click here now for a free copy of this invaluable report.

Brian Orelli has no position in any stocks mentioned. Max Macaluso, Ph.D. owns shares of Gilead Sciences. The Motley Fool recommends Berkshire Hathaway and Gilead Sciences. The Motley Fool owns shares of Berkshire Hathaway. Try any of our Foolish newsletter services free for 30 days. We Fools may not 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.