Yet all this liberation hasn 't eliminated the old double standard for women ; there is still a stigma for those who have too many partners or are always looking for a hookup , says bogle .
Although the cost of an individual transaction has fallen a lot over the past ten years , the volume of trading has risen in tandem-so much so that mr bogle reckons wall street 's total commission revenues have doubled over the past decade .
The reason bogle and others are concerned : many investors in these funds may not realize they have exposure to apple , and indeed may have invested in the funds to get exposure to a different segment of the market .
