Correlation of Rates and S&P 500

Operation twist has had the opposite effect on rates that outright QE has had, but equities have rallied during twist just like they did during QE1/2.  This has lead to a divergence between equities and interest rates over the past year.  Previously equities and rates had been relatively correlated: when equities moved higher so did interest rates.  Recently though, the daily correlation has broken down and over the past year has actually turned slightly negative.