AMC Entertainment (NYSE:AMC) stock has spent all but 14 days trading in penny-stock hell so far this year. Except for a couple of short bursts like when it jumped 135% in two days trading, meme-stock investors hoping for a 2021-style revival aren’t likely to get their wish. Although I’m the last person on earth that would write something positive about AMC stock — I recently called it “radioactive” — part of what I do as a writer is to examine possible events that could turn a stock from toxic to must-own.  ...