If you want a roller coaster ride full of ups, downs, twists, and turns, move a portion of your portfolio to the pharmaceutical or biotech sector. Every day, including weekends, news wires are full of press releases from these companies outlining the results of clinical trials conducted on new and experimental drugs and compounds.

Celgene (NASDAQ:
Bristol-Myers Squibb (NYSE:
BMY
Pfizer (NYSE:
PFE
FDA
SEE: 
What is a Clinical Trial?
What are Clinical Trial Phases?
Investigational New Drug Application (IND)
SEE:
Clinical Trial Protocols 
Phase
1
Phase 2
SEE: 
Phase 3
New Drug Application
Possible Approval
Phase 4
Why are Biotech and Pharmaceutical Stocks so Volatile?
SEE: 
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Alnylam Pharmaceuticals (NASDAQ: