A new warning label for mutual funds? Experts recommend a stronger warning or an outright ban on mutual funds performance ads altogether as an inherent threat to investors’ financial health.

Fund Ads Said to Foster False Impressionhttp://blogs.wsj.com/In their quest to recruit Main Street investors seeking above-market returns, fund companies have long relied on newspaper and magazine ads to showcase portfolio managers’ best work. Difficult as that task seemed a year or two ago, the recent bull market has given these firms new…