The stock of Delek U.S. Holdings will enter the trading week with vigor, closing up 11.6 percent in value Friday on the heels of a Halliburton subsidiary announcement expected to positively impact the energy industry.

Delek (NYSE: DK) shares ended the Friday session priced at $71.47 up 11.6 percent (an increase of $7.43 per share). Volume was heavy, as about 1.88 million shares traded vs. a daily average of 1.22 million, according to Yahoo Finance.