Top mutual fund manager Donald Yacktman says that the short-term “casino” mentality among most investors has actually created more opportunities for long-term value investors. Yacktman tells Morningstar that a decline in trading costs in recent years, coupled with the natural volatility of stocks, has created volatility and the casino mentality. But, he says, “The more volatile, interestingly enough, a situation is, I think, the more attractive it is for value managers, who are long-term investors, because it creates more opportunities.” Yacktman also talks about his approach to selling stocks.