While A shares and B shares took in the lion's share of money during the 1980s and 1990s, today that's changing, Investor's Business Daily reports. In fact, last year, no-load funds took in 80%, or $154 billion, of the total $192 billion invested in long-term funds, data from the Investment Company Institute shows.

Further, B shares saw their fifth straight year of negative flows, losing $65 billion last year, a substantial increase from net outflows of $1 billion in 2001. Morningstar found that among A, B, C and no-load share classes, today, the most prevalent share class available is C shares (available on 4,173 funds), followed by no-loads (3,739 funds), A shares (3,613) and last, but not least, B shares (2,734 funds).

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