The US dollar is a very popular short trade indeed, with only a tiny amount of unwinding so far.
Are the WSB folks big enough to muscle a US dollar short squeeze?
Here's ANZ's take on positioning from their latest report (earlier this week - and a couple of caveats, its for data as of close 19 January, which is the latest CFTC data available, via the TFF part of the weekly COT report):
