Dxy is down because the fed wants to raise rates 2 more times as well as unload its balance sheets. This will cause the dollar to increase, so rather than increase from high to higher, the fed wants to raise from lower to higher. IMHO that's why we're seeing dxy falling. Also "trump" (aka mnuchin) wants a weaker dollar. This is theoretically good for equities since a weaker dollar makes our products cheaper. So bullish stocks.