. >>> on wall street, value investor bob olstein has made brilliant calls himself, now make a new call. the case for active investing. listen. >> i believe it's people's jobs to find active managers. the governor of pennsylvania says there's no risk in the indexes. well, the indexes were the ones who bought enron, they bought worldcom. robot investing, that's the du jour of the day. liz: bob is going to be on "wall street week" friday. but in the meantime, a guy who disagrees, tom lydon, ceo of etf trading. you say better to go with etfs, baskets of stocks that win for themselves. >> liz, if i own a mutual fund company i'd put the hate on etfs as well. scared to death. 200 billion dollars came out of mutual funds last year. 125 billion went into etfs. people want diversification, transparency, they want low cost. and that's what etfs are giving investors, they don't want to pay the high fees. lack of transparency and the underperformance. liz: buffett is on your side, he'll always win if you go into the s&p inde get to your favorites right now. you like guggenheim. power shares, footsi