Why These 3 Clean Energy Stocks Bounced Sharply From 52-Week Lows This Week

This week was a test for investors' nerves. If you look at the charts for some alternative energy stocks, for instance, you'll see how they slumped as the week kicked off -- some even plunging to 52-week lows -- only to bounce back just as dramatically even as I write this. Believe it or not, shares of Ballard Power Systems (NASDAQ: BLDP), Clean Energy Fuels (NASDAQ: CLNE), and Blink Charging (NASDAQ: BLNK) are up more than 15% each in the past two days through 2 p.m. ET Friday, but they're still down for the week according to data provided by S&P Global Market Intelligence.

Each of these stocks hit 52-week lows this week. Each of these companies also released its quarterly numbers in the past few days, with one even crushing analysts' estimates. That tells me this one stock, at least, could have ended the week on a much stronger note if not for the choppy markets.