If you bought $1,000 worth of AMC Entertainment Holdings (NYSE: AMC) stock at its all-time high of $62 in June 2021, you would have roughly $100 today -- a decline of 90%. While the movie theater operator seems to be recovering nicely from the COVID-19 pandemic in 2020 and 2021, massive levels of equity dilution could leave investors holding the bag. At the height of the crisis in 2020, AMC's revenue collapsed by 77% to $1.24 billion against the prior year, and it lost $4.59 billion.