One stock that's been moving higher with the surge in tech stocks is Block Inc. (NYSE: SQ). The company, formerly known as Square, is evolving into much more than a payment processor. As Yu points out, that's making SQ stock an attractive play for investors looking for value. Articles by Thomas Hughes Walmart Inc. (NYSE: WMT) is always one of the most closely watched retail stocks. This week, the earnings report from Walmart sent the market into the red. The issue was the company's guidance, which came in lighter than analysts expected. However, this is a time to look beyond the headlines. That's what Hughes does by explaining why WMT stock may be a buying opportunity. Hughes has covered Plug Power Inc. (NYSE: PLUG) through several earnings cycles. This time around, the company missed on the top and bottom lines. But the more significant news was that the company issued a going concern warning that puts it at a make-or-break point.