AFAIK, there is no DXY tracker available to retail investors in the UK. I wanted a UCITS equivalent to UUP but couldn’t find anything.
The two ETFs suitable for getting USD exposure are FEDG and GBUS. I requested both couple of days ago:
Please upvote and maybe we can get them added. I think FEDG is the better one. It has lower fees plus you effectively earn interest at Fed Funds rate. Both trade on the LSE denominated in GBP so no FX fee applies.