Big Fish Changing Market Dynamics? Gross Blasts Shorting Do funds' sales of stocks to meet redemptions signal a market bottom?(MUTUAL FUNDS)

Byline: CLAIRE MENCKE

If you're an individual investor with cash in your account, you may have heard stories that other investors also are on the sidelines. But trading volumes on the New York Stock Exchange and Nasdaq over the past few months don't look like they're down all that much. Some players, at least, are not on the sidelines.

Some of the biggest brokers dealing with individual investors -- Charles Schwab and Fidelity -- say their monthly volume in trades is down, often by double-digit percentages, since last year.

So who is trading these days? What are they doing differently? What does it mean for small investors?

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