Aug 14 (Reuters) - Grupo SURA, Colombia's largest investment company, on Monday reported an 8.8% increase in second-quarter profit, helped, in part, by favorable exchange rate fluctuations.

Net profit for the quarter totaled 607 billion pesos ($153 million) for the three-month period.

Quarterly revenue rose 26.8% to 9.54 trillion pesos, according to the company's earnings report.

"The results of this period reflect the greater devaluation of the Colombian peso against the rest of the currencies in the region and the consolidation of the AFP Proteccion (pension fund)," the company said.

Operating expenses, meanwhile, grew 27.1% from the year-earlier period, mostly driven by exchange rate changes and inflation, as well as investments in technology.

Grupo SURA operates in more than 10 countries via holdings in financial services, foodstuffs, cement, energy and infrastructure, as well as investment firms.

($1= 3,973.41 Colombian pesos) (Reporting by Noe Torres, Carolina Pulice and Brendan O'Boyle; Editing by Sonia Cheema)