Ken Fisher, author of "Plan Your Prosperity", discusses the biggest mistakes investors make when planning for retirement and what they should do to avoid any pitfalls.

The bull run in the stock market is about half over, and mega-cap companies are the way to go from here, says Ken Fisher of Fisher Investments.

Ken Fisher, chairman and chief executive officer of Fisher Investments, says "we are clearly in a bull market" that will last another two years. Fisher talks with Bloomberg's Ken Prewitt and Tom Keene on Bloomberg Radio's "Bloomberg Surveillance."

Ken Fisher, chairman and chief executive officer of Fisher Investments, says the Greek economy "is toast". Fisher discusses his book, "Markets Never Forget But People Do: How Your Memory Is Costing You Money and Why This Time Isn't Different". He speaks with Kathleen Hays on "The Hays Advantage" on Bloomberg Radio.

Ken Fisher interview with Maria Bartiromo (CNBC) and Eric Marshall. Commentary is regarding correction vs. recession.

Ken Fisher, founder of Fisher Investments, says star CEO's at Costco, Xerox and Papa John's will push their stocks higher.

Taking Apart Investing Myths

Are covered calls better than naked puts? Would two bear markets wipe out a clients’ portfolio? We chatted with Ken Fisher who debunked 50 myths of investing.