Should You Be Tempted To ‘Sell’ AMC Entertainment Holdings (AMC) Stock? Mittleman Brothers recently released its Q1 2021 Investor Letter, a copy of which you can download here. Mittleman Investment Management’s composite gained 25.9% net of fees in the first quarter of 2021, versus gains of 6.2% in the S&P 500 Total Return Index and 12.7% in the Russell 2000 Total Return Index. You should check out Mittleman Brothers’ top 5 stock picks for investors to buy right now, which could be the biggest winners of this year. In the Q1 2021 Investor Letter, the fund highlighted a few stocks and AMC Entertainment Holdings Inc. (NYSE:AMC) is one of them. AMC Entertainment Holdings Inc. (NYSE:AMC) is a movie theater chain. In the last three months, AMC Entertainment Holdings Inc. (NYSE:AMC) stock gained 405%. Here is what the fund said: