Rebalancing and the Value Effect
研究发现价值型投资组合长期跑赢成长型，主要归因于再平衡操作：每次再平衡用高股息价值股替换低股息价值股，从而提升价值策略的股息增长率。
It is amply documented that a value portfolio outperforms a growth portfolio over long spans in most markets worldwide; less well known, however, is how this outperformance is achieved. Decomposing the total returns of these strategies, Chaves and Arnott find that 1) value portfolios enjoy higher dividend income and 2) the average growth stock enjoys faster dividend growth than the average value stock, but surprisingly 3) value portfolios experience higher growth in dividends than growth portfolios. The authors argue that the first two findings are expected, but the third is not completely understood by investors. The third finding is a consequence of the nature of the rebalance rules for growth and value portfolios. Each rebalance replaces loweryielding value stocks with new higher-yielding value stocks and replaces higher-yielding growth stocks with new loweryielding growth stocks. It is, therefore, the act of rebalancing and reconstituting the growth and value portfolios that increases the growth rate for dividend income in value strategies and rather sharply reduces it in the case of growth strategies. Although this finding is analogous to that of Fama and French, which is reported in their 2007 “Migration” paper, Chaves and Arnott more specifically attribute much of the advantage of value strategies to the acts of reconstituting and rebalancing and their side effects on dividends. In so doing, they shed some light on the faster dividend growth of value portfolios. <b>TOPICS:</b>Fixed-income portfolio management, in portfolio management, statistical methods