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We provide empirical evidence that the Size, Low-Risk, Value and Momentum factors have significant risk-adjusted returns in the corporate bond market. By combining these factors in a multi-factor portfolio, drawdowns and tracking error vs. the market are reduced, while the higher return and Sharpe ratio are preserved.
The poor long-term live performance of the first generation of value indices indicates that capturing the value premium is not easy. This does not mean, however, that the value premium is beyond the reach of investors. We argue that a value premium still exists, but that harvesting it requires an approach that is much more sophisticated than simply following a straightforward value index.
Some argue that the mere mechanism of rebalancing increases returns, and that this explains the success of factor investment strategies. Although factor strategies do need rebalancing to maintain their exposures, there are several reasons why it is unlikely that this is their source of added value.