Last week with most of the attention being on whether or not the US Government would be able to get a deal done to raise the debt ceiling and fund the government, the factor with the highest R-square performance was Beta. Beta has played a prominent role over the past 3 months as well (second highest correlation behind T-Bond Yield Curve, respectively).
Last week's top 5 factors with the highest R-Square
Over the past 3 months the top 5 factors with the highest R-Square
However, over the past year valuation metrics have shown a greater relationship to performance with Dividend Yield (DY) and P/E, two of the three highest R-square values during this time.