AMC shares finally fall 18% after movie theater chain warned investors they could lose all their money - but other 'meme stocks' continue to rise Stock prices for the beleaguered theater chain had a volatile Thursday, dropping 40% before recovering and dropping again Shares in the theater chain ended the day 18% down at $51.06 The influence of online investors remains felt, with the company telling potential buyers that they could lose all of their money Still, AMC is taking advantage of its status as a so-called 'meme stock' selling over half a billion dollars in new shares Thursday, and offering free popcorn It comes as other firms such as legacy phone company Blackberry and cannabis Sundial Growers have seen similar investment patterns