AMC Entertainment ( AMC ) shares slumped lower Friday after the struggling movie theatre company warned that it needed at least $750 billion in additional funding in order to avoid bankruptcy next year. Around 70% of AMC's 594 U.S. theaters are running with limited capacity, owing to the coronavirus pandemic, AMC said in a Securities and Exchange Commission filing, and the group only has enough cash to continue operating through to the end of January. It had $320 million in cash as of November 30, down from $417.9 million on September 30. AMC said it is exploring financing alternatives, including an at-the-market sale of 178 million shares, but needs around $750 million of additional liquidity in order to remain viable through the whole of 2021, noting that, given the uncertainty about its ability to raise additional liquidity "substantial doubt exists about the company's ability to exist as a going concern".