Why Shares of Vistra Energy Fell 13.3% in December

Shares of energy company Vistra Energy (NYSE: VST) tumbled 13.3% in December, according to data provided by S&P Global Market Intelligence. That pretty much wiped out the company's gains for 2019, and its share price finished up just 0.4% for the year.

The market was already pretty bearish on Vistra's stock. After the company's Q3 2019 earnings call in November, shares also took a hit.

A single negative news story can have a big impact on a stock. That seems to have happened with Vistra in December. Image source: Getty Images.

Source Fool.com