The yield is down since October. From 3.2% to 2.8%. Momentum (inertia) means that the best prediction is that yield will continue down. There are shorter episodes with a broken correlation. This happened end of November and it is happening right now. The stock market likes to rally after having fallen quickly (oversold), but reality catches up. The yield signals another downturn in the stockmarket.
Can we forecast the yield? Partly. Momentum is well documented in academic finance. So trend-based forecasting is possible. Can we forecast when the trend reverses? That is more difficult. Always a need to be openminded and data-dependent