Edison International is trading lower this morning, continuing a period of volatility that has seen the stock shed nearly 23% of its value over the past month. While the company maintained its quarterly dividend and reaffirmed guidance as of September 30, investor sentiment remains weighed down by uncertainty regarding pending regulatory decisions in Sacramento. The stock is underperforming its peers in the regulated electric industry, as competitors like DTE Energy and Pinnacle West Capital posted gains in the most recent regular session.