GUSH is not a buy and hold for the most part, it's often traded intraday. It's mostly based on XOP Spyder Select, but the holding right now are quite a bit in cash as well. Not sure why that is.
Under "Documents and Downloads" it says 'Daily Holdings'
To answer your question, there have been two recent reverse splits 11/22/2019 1 for 10 03/24/2020 1 for 40
But that 20,000 is still relatively correct, it was just never trading for '20,000' per share at any time. So last time GUSH split, I think it was because the dollar value went down to under $1.00 and they were at risk of losing the listing. So, .90 or whatever became (.90 x 40) = $36 per share and if you owned 40 shares you would receive 1. It basically destroyed the options as well. Instead of 100 shares, it became two shares plus a 'cash settlement'.