As US session gets underway, Yen and Dollar remain the weakest links in the currency markets, reflecting a broader trend of risk appetite among investors. All eyes are now on whether the US stock market can extend its record-setting run. In particular, there is anticipation that NASDAQ could catch up and achieve a new historical high. Meanwhile, there's prospect for Yen and Dollar to swap their positions before the week closes, contingent upon extended retreat US treasury yields.