It’s all a matter of ebb and flow. In investing, things work until they don’t. Or as Ajit Jain of Berkshire Hathaway told me about investing the other day, “it’s easy until it isn’t.” Cheap small-caps outperform until they reach the point where they’re no longer cheap. Trend-following or momentum investing — staying with the winners — works for a while. But eventually rotation and buying the laggards takes over as the winning strategy. “Buying the dips” lets investors take advantage of momentary weakness, up until the time when a major problem surfaces (or the market simply no longer
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