Tether (USDT) is 475178.5× the size of OmniCat (OMNI) by market capitalisation. Over the past 30 days, OMNI is ahead by 23.7 percentage points (OMNI +23.8% against USDT +0.0%). OMNI has been the more volatile of the two, at 102% annualised against USDT's 0%.