First Solar, Inc. (NASDAQ:FSLR) is among the most undervalued solar stocks to buy now. According to the recent disclosure with the SEC, Optimize Financial Inc. has increased its position in First Solar, Inc. (NASDAQ:FSLR) by 76.7% in the first quarter. With the purchase of 6,392 shares, the wealth management firm now owns 14,724 shares of the company’s stock worth $1,862,000. From top-notch thin-film technology and healthy margins to robust footing in large-scale utility projects, the reasons to believe i ...