This is the US Dollar Index (DXY). I analyzed it previously when it was at the 96 level, after it formed a Spring within a Wyckoff accumulation pattern. At that time, gold was recording historical highs, and Bitcoin was trading between $80k and $98k.
The index later rose to 100.6, and during that time:
Bitcoin dropped to $60k.
Gold fell from 5600 to 4020.