What happened Shares of ReneSola (NYSE: SOL) jumped as much as 38.1% in trading on Monday after getting a big upgrade from an analyst. Shares closed the day up 26.4%. So what H.C. Wainwright analyst Amit Dayal raised the price target on ReneSola's stock from $4 to $12 per share and kept a buy rating. This comes after Dayal initiated coverage at $4 per share in September. Image source: Getty Images. As a relatively small company that's actively traded, ReneSola can swing wildly on even the smallest news. But an analyst upgrade has caused a flurry of activity, with 13 million shares trading hands today compared to the 30-day average of 2.6 million. Now what I wouldn't read too much into any upgrade or downgrade of a stock like this, especially soon after earnings were released. Management announced earlier in December that revenue had fallen 85% in the third quarter versus the same year-ago period to $9.7 million, and net income was just $2.1 million. ReneSola may be a solar energy stock with a bright future, but this upgrade isn't reason enough for me to buy the stock today. 10 stocks we like better than ReneSolaWhen 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 ReneSola 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 November 20, 2020 Travis Hoium 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