It makes sense that Vanguard may be on the prowl for another market, but is this the right one? : Fed Chair Jerome Powell's two days of congressional testimony is the big event being watched by markets in the week ahead. The outlook for Chinese stocks may be risky. But Lewis Kaufman, a portfolio manager at Artisan Partners, thinks investors should buy them anyway. Law enforcement officials say that wealthy financier Jeffrey Epstein has been arrested in New York on sex trafficking charges.