Refiner Valero's quarterly profit slumps 32.7 pct

July 27 (Reuters) - Valero Energy Corp, the largest independent U.S. refiner, reported a 32.7 percent fall in quarterly profit on Thursday as costs increased.

Net income attributable to Valero shareholders fell to $548 million, or $1.23 per share, in the second quarter ended June 30, from $814 million, or $1.73 per share, a year earlier.

However, the San Antonio, Texas-based company's operating revenue rose to $22.25 billion from $19.58 billion. (Reporting by Ahmed Farhatha in Bengaluru; Editing by Martina D'Couto)