These violent market swings can be devastating for the short-term investor. But Jon Herring says market volatility is handing long-term investors a once-in-a-generation chance to buy world-dominating companies at bargain prices.

Excerpt: "The fund [CalPERS]warned it would start or step up existing efforts to push for changes if the companies do not act quickly themselves. Calpers is already pursuing shareholder proposals at four of the 11 companies."

I found the thought of CalPERS as a potential activist investor very interesting.