An investor group called on Sempra Energy to seat six of its candidates on its board of directors and conduct a thorough review of the company with an eye toward remaking it.

Elliott Management and Bluescape Resources Group say Sempra (NYSE: SRE) is undervalued. The investors, which collectively hold 4.9 percent of Sempra, publicly laid out their strategy on June 11. They say Sempra’s current collection of businesses does not fit together, and say their plan to change the company would let Sempra create $11 billion to $16 billion in value.

Shares of Sempra traded at $116.98 at midday June 11, up 15 percent from their closing price on Friday.

In a statement issued June 11, Sempra said it received the proposals.

“Sempra Energy is committed to an open dialogue with all shareholders and considers investor perspectives in the context of the company’s existing strategy and opportunities to deliver long-term shareholder value,” the statement said. “Our board and management will review their letter and presentation in detail and respond in due course.”

Elliott and Bluescape make their case for change at Sempra on the website

San Diego-based Sempra is parent to San Diego Gas & Electric and Southern California Gas Co. It has a variety of other energy businesses which operate nationally and internationally.