The stock symbol for Sempra Energy is SRE. Sempra Energy is listed on the New York Stock Exchange, commonly known as the NYSE. This listing allows investors to buy and sell shares of the company openly on one of the largest exchanges in the world. Sempra Energy, through its various subsidiaries, is involved in the energy sector, providing services in electricity and natural gas, which contribute to its presence in the market. For those interested in tracking the performance of Sempra Energy's stock or obtaining more information about their financials, I encourage them to visit the current web page or financial news sources that cover publicly traded companies.