When the stock market becomes unpredictable and volatile like it did last week, traders often turn to pair trades to mitigate risk. One Wall Street analyst sees a pair of solar stocks that could form the basis for a solid 2018 pair trade. The Analyst Credit Suisse analyst Michael Weinstein has an Underperform rating and $55 price target for First Solar, Inc. FSLR and an Outperform rating and $15 price target for Sunrun Inc RUN. SourceThe price will break out the falling channel soon. $FSLR, First Solar, Inc. / D There is a good chance for an upside due to stochastics. $RUN, Sunrun Inc. / D