YTD as in year to date? Looking at Yahoo's data, it should be $8.3 which happened on Feb 14, 2014. Anyway, it seems you're right Iris Energy remains to be moneypit.
YTD, from the start of the year, it would really not make any sense comparing two stocks by their ATH when that happened in difference days for different reasons, so just going with the scenario of investing the money you didn't spend on the NYE party and Iris was not the thing to do, again, this despite Bitcoin surging 50% in the same time!
Seems like investors in stocks are stating to become more cautions, the margin are still not great so the returns might not be there at all.