What happened Shares of SGOCO Group (NASDAQ: SGOC) were up as much as 196% Monday morning as retail investors piled into this penny stock. The Hong Kong company's stock was up 172.2% at 11:47 a.m. EDT and is now up a whopping 917% in the last five trading days. So what On Friday of last week, SGOCO Group stock went up 500% on no news or analyst reports. Historically, SGOCO Group's 10-day trading volume was much less than 1 million shares. Today alone it changed hands 59 million times before noon EDT. The rise on Friday spurred interest from traders on Reddit, Stocktwits, and Twitter who have propped up stocks like GameStop (NYSE: GME) and AMC Entertainment Holdings (NYSE: AMC) for some time this year. It is unclear why shares of SGOCO Group went up last week, but all indications are that it is retail demand driving up the stock on Monday. Image source: Getty Images. As of this writing, SGOCO Group has a market cap of close to $2.5 billion. Its underlying business is not nearly as large. In 2020 it did $4 million in revenue, had a negative gross profit, and has reported an operating loss each year since 2016. Now what With Reddit traders fixed on SGOCO Group, long-term investors should stay far, far away from the stock. It already was a penny stock without much of an underlying business, which is enough for any savvy investor to stay away. Add on that it has now become a "meme stock" and investing in SGOCO Group looks downright dangerous. 10 stocks we like better than SGOCO GroupWhen our award-winning analyst team has a stock tip, it can pay to listen. After all, the newsletter they have run for over a decade, Motley Fool Stock Advisor, has tripled the market.* They just revealed what they believe are the ten best stocks for investors to buy right now... and SGOCO Group wasn't one of them! That's right -- they think these 10 stocks are even better buys. See the 10 stocks *Stock Advisor returns as of June 7, 2021 Brett Schafer has no position in any of the stocks mentioned. The Motley Fool has no position in any of the stocks mentioned. The Motley Fool has a disclosure policy.Source