Our 6 ‘Best Buys Now’ Shares Shares in US cinema operator AMC Entertainment (NYSE: AMC) have had an incredible run recently. Last week, the stock rose 85%. Over a year, AMC is up around 710%.It appears UK investors have been getting in on the action. Last week, AMC was the most purchased stock on Hargreaves Lansdown by a wide margin. It was also the most traded stock on Freetrade, with buy orders up 300%.5G is here – and shares of this ‘sleeping giant’ could be a great way for you to potentially profit!According to one leading industry firm, the 5G boom could create a global industry worth US$12.3 TRILLION out of thin air…And if you click here we’ll show you something that could be key to unlocking 5G’s full potential…Should I buy AMC myself? Let’s take a look at what’s going on.Why AMC stock is risingThe reason AMC stock has surged over the last few weeks is that Reddit (WallStreetBets) traders have piled into it. As a result, it appears to have experienced a combination of a ‘short squeeze’ and a ‘gamma squeeze’.A short squeeze occurs when short sellers (who have borrowed shares and sold them in order to try to profit from a falling share price) buy back shares to close their short positions.A gamma squeeze occurs when options traders buy large quantities of call options (which give the trader the right to buy the stock at a set price in the future). This forces market makers to buy stock in order to hedge their risk exposure. As it continues to rise, market-makers must continue buying more to maintain their hedges, further boosting the share price.Ultimately, the huge share price rise has very little to do with the company’s fundamentals. Don’t take my word for it. In a regulatory filing on Thursday, AMC said: “We believe that the recent volatility and our current market prices reflect market and trading dynamics unrelated to our underlying business, or macro or industry fundamentals.”90% downsideLooking at AMC stock now, I see it as a very risky investment. Sure, there have been some positive developments recently. Last week, for example, the company sold 11.6 million shares at an average price of around $51 each, raising nearly $590m. This will strengthen the company’s balance sheet.The company should also benefit as the US reopens in the months ahead. This year, analysts expect revenues to be double what they were last year.However, right now, the company’s share price and valuation make no sense at all, in my view. Currently, AMC’s share price is nine times Wall Street’s average target of $5.25. In other words, if Wall Street analysts are right, the stock could lose 90% of its value.AMC’s warning to investors It’s worth noting that, in a very unusual move, AMC has actually warned investors about buying its stock at the moment.“Under the circumstances, we caution you against investing in our Class A common stock unless you are prepared to incur the risk of losing all or a substantial portion of your investment,” it said in a filing last week.And Vanda Research, which tracks retail investor flows, said interest in AMC stock may have peaked last Wednesday. Since Wednesday, the stock has fallen 23% (which shows how dangerous these kinds of ‘meme’ stocks can be if my timing is poor).Better stocks to buyOf course, AMC stock could keep rising. Currently, short interest remains high. The short squeeze could have further to go.However, given the risks, I will be avoiding AMC. I think there are much better stocks I could buy. Click here to claim your copy now — and we’ll tell you the name of this Top US Share… free of charge! Edward Sheldon, CFA | Monday, 7th June, 2021 | More on: AMC Renowned stock-picker Mark Rogers and his analyst team at The Motley Fool UK have named 6 shares that they believe UK investors should consider buying NOW.So if you’re looking for more stock ideas to try and best position your portfolio today, then it might be a good day for you. Because we’re offering a full 33% off your first year of membership to our flagship share-tipping service, backed by our ‘no quibbles’ 30-day subscription fee refund guarantee. I’m sure you’ll agree that’s quite the statement from Motley Fool Co-Founder Tom Gardner.But since our US analyst team first recommended shares in this unique tech stock back in 2016, the value has soared.What’s more, we firmly believe there’s still plenty of upside in its future. In fact, even throughout the current coronavirus crisis, its performance has been beating Wall St expectations.And right now, we’re giving you a chance to discover exactly what has got our analysts all fired up about this niche industry phenomenon, in our FREE special report, A Top US Share From The Motley Fool. I would like to receive emails from you about product information and offers from The Fool and its business partners. Each of these emails will provide a link to unsubscribe from future emails. More information about how The Fool collects, stores, and handles personal data is available in its Privacy Statement. Edward Sheldon owns shares in Hargreaves Lansdown. The Motley Fool UK has recommended Hargreaves Lansdown. Views expressed on the companies mentioned in this article are those of the writer and therefore may differ from the official recommendations we make in our subscription services such as Share Advisor, Hidden Winners and Pro. Here at The Motley Fool we believe that considering a diverse range of insights makes us better investors. See all posts by Edward Sheldon, CFA “This Stock Could Be Like Buying Amazon in 1997” Image source: Getty Images. AMC stock is flying. Should I buy now? Enter Your Email Address Simply click below to discover how you can take advantage of this.