What happened Extending the 19% plunge that they experienced in February, shares of Ballard Power Systems (NASDAQ: BLDP) fell 13% in March, according to data from S&P Global Market Intelligence. Besides an uninspiring fourth quarter 2020 earnings report, investors decided to leave their positions in response to Wall Street's wave of bearish sentiment regarding the stock. Image source: Getty Images. So what Falling short of analysts' estimates of $30.2 million, Ballard reported revenue of $28.6 million for the last quarter of 2020. A cursory glance at the company's line didn't provide much to cheer either; the company reported a $0.05 loss per share, slightly lower than analysts' estimate of a $0.04 loss per share. Beyond the headline figures, there were other undesirable figures in the company's earnings report. For one, Ballard reported that it used $6.7 million in cash from operations, contributing to an operating cash outflow of $42.9 million for 2020, notable steeper than the negative $14.2 million that it reported in operating cash flow in 2019. Another concerning factor was the company's backlog. At the end of the fourth quarter, Ballard reported an order backlog of $118 million, representing a sequential decline from the $128 million that it had at the end of the third quarter -- certainly not an encouraging sign from a growth company. Another disappointment for investors came from Ballard's bears on Wall Street, who appeared to wake from hibernation last month. After the company reported fourth quarter earnings, Citi lowered its price target to $33 from $42, and BMO Capital reduced its price targets to $35 from $38, according to Thefly.com. Now what Shares have risen 6% so far through the first couple of days of April, but it would be foolhardy to consider the stock on the rebound. In light of the company's continued cash burn and lack of profitability, Ballard will likely remain one of the more volatile renewable energy stocks on the market; therefore, it should only draw the attention of investors with a high tolerance for risk. 10 stocks we like better than Ballard Power SystemsWhen investing geniuses David and Tom Gardner have 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.* David and Tom just revealed what they believe are the ten best stocks for investors to buy right now... and Ballard Power Systems 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 February 24, 2021 Scott Levine 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