In what might be its latest move to take over another industry, Amazon may be getting ready to launch an online pharmacy. Rumors about the move sent shares of companies such as CVS, Rite-Aid, and Walgreens falling. We're also watching shares of Tesla after the company pushed back the unveiling of its all-electric semi truck. We also preview Samsung's earnings guidance report, out Friday and Facebook's Oculus Connect event. And Harvey Weinstein is fired from the company he founded.