One of the platitudes most constantly quoted in Wall Street is to the effect that one should never sell a dull market short. That advice is probably right oftener than it is wrong, but it is always wrong in an extended bear swing. In such a swing the tendency is to become dull on rallies and active on declines.
- William Peter Hamilton, The Stock Market Barometer (1909).
Volume tends to expand in the main direction of the trend. In a bull market, advances accompanied by increasing volume or declines on diminishing volume are taken to be bullish. Conversly, in a bear market, declines are accompanied by increasing volume and advances show diminishing volume. Volume should always be studied as a trend (relative to what has preceded).
- Richard Russell, The Dow Theory Today
The bottom is preceded by a period in which the market declines on low volumes and rises on high volumes. The end of a bear market is characterised by a final slump of prices on low trading volumes. Confirmation that the bear trend is over will be rising volumes at the new higher levels after the first rebound in prices.
- Russell Napier, Anatomy of the Bear (his study of the four great stock market bottoms of 1921, 1932, 1949, and 1982).
Conclusion - watch volume over the next couple of weeks to determine whether the bottom really is in...