First Solar upgraded to Buy from Neutral at BofA/Merrill BofA/Merrill upgraded First Solar to Buy from Neutral and raised its price target to $45 from $42 following the better than expected Q1 report and raised guidance . Analyst Krish Sankar said First Solar's execution has improved and said the low cost Series 6 product could lead to better margins starting in Q2 2018. Sankar also told investors First Solar's valuation is attractive and the balance sheet has strengthened